(c) Wilhelm Wundt

He set up the first experimental psychology laboratory at the University of Leipzig, Germany in 1879. This is considered the formal beginning of psychology as a scientific discipline.

(b) Structuralism

Structuralists, led by Wundt and Titchener, used introspection (trained self-observation) to study the structure of conscious experience.

(c) Gestalt Psychology

Gestalt psychologists (Wertheimer, Köhler, Koffka) emphasised that perception is not simply the sum of individual sensations but an organised whole (Gestalt).

(b) Astrology

Astrology is not a branch of psychology. It lacks empirical evidence and scientific methodology.

(b) Dr. Girindrasekhar Bose

He founded the Indian Psychoanalytical Society in 1922 and pioneered the study of psychoanalysis in India.

Psychology is considered a natural science because it uses the scientific method (hypothesis testing, experimentation) and studies biological bases of behaviour (brain, neurons, hormones).

It is also a social science because it examines how individuals are influenced by social and cultural factors, using methods like surveys, case studies, and observation of social behaviour.

Thus, psychology occupies a unique position at the intersection of both domains.

1. Clinical Psychology — Assessment, diagnosis, and treatment of psychological disorders
2. Cognitive Psychology — Perception, memory, thinking, language, and problem-solving
3. Social Psychology — How social contexts and groups influence individual behaviour
4. Developmental Psychology — Changes in behaviour and mental processes across the lifespan

1. Ancient Roots:

• Greek philosophers like Plato and Aristotle discussed the nature of the mind and soul
• In India, texts such as the Vedas, Upanishads, and Bhagavad Gita explored consciousness, self-awareness, and the nature of the self
• The word psychology comes from the Greek psyche (soul) and logos (study)

2. Pre-scientific Period:

• During the Renaissance, thinkers like René Descartes proposed the mind-body dualism
• Psychology was part of philosophy and did not have separate scientific methods

3. Birth of Scientific Psychology (1879):

• Wilhelm Wundt established the first psychology laboratory in Leipzig, Germany
• This marked the transition of psychology from philosophy to a scientific discipline

4. Early Schools:

• Structuralism (Titchener) — studied the structure of consciousness through introspection
• Functionalism (William James) — focused on how the mind functions to help organisms adapt
• Behaviourism (Watson, Skinner) — rejected introspection; focused on observable behaviour
• Gestalt Psychology — emphasised perception as an organised whole
• Psychoanalysis (Freud) — explored the role of the unconscious mind

5. Modern Psychology:

• Cognitive Revolution (1950s–60s) — renewed focus on mental processes
• Humanistic Psychology (Maslow, Rogers) — emphasised free will and self-actualisation
• Today, psychology is a diverse discipline with numerous branches and applications in everyday life

Psychology has many branches, each with practical relevance:

1. Clinical Psychology — Helps individuals deal with psychological disorders like depression and anxiety. Relevant in hospitals and counselling centres.

2. Cognitive Psychology — Studies memory, attention, and thinking. Relevant in designing educational materials and improving learning.

3. Social Psychology — Examines how people are influenced by others. Relevant in understanding group behaviour, prejudice, and conformity.

4. Developmental Psychology — Studies changes from birth to old age. Relevant for parenting, education, and elder care.

5. Industrial/Organisational Psychology — Applies psychology to work settings. Relevant in employee selection, motivation, and leadership training.

6. Health Psychology — Studies the role of psychological factors in health and illness. Relevant in stress management and promoting healthy lifestyles.

7. Educational Psychology — Focuses on how people learn. Relevant in classroom teaching, curriculum design, and learning disabilities.

8. Environmental Psychology — Studies how physical environments affect behaviour. Relevant in designing schools, hospitals, and public spaces.

Each of these branches demonstrates that psychology is not limited to the study of mental illness but has wide-ranging applications in making daily life better.

(a) Both A and R are true and R is the correct explanation of A

Psychology is considered a science because it uses systematic, empirical, and verifiable methods (observation, experimentation, data analysis) to study behaviour and mental processes. The reason correctly explains why the assertion is true.

(i) Riya is practising Clinical Psychology (or Counselling Psychology), as she is assessing and helping a student with emotional and behavioural difficulties.

(ii) She is most likely using the case study method — an in-depth investigation of a single individual using multiple sources (family background, school records, personal history).

(iii) Limitation: The case study method is highly subjective and findings from a single case cannot be generalised to others. The researcher’s own biases may also influence the interpretation.

(iv) Educational Psychology could help the school design better learning environments, implement anti-bullying programmes, and create strategies to support students’ overall well-being.

(i) The year 1879 is significant because Wilhelm Wundt established the first experimental psychology laboratory in Leipzig, Germany. This event marked the formal beginning of psychology as an independent scientific discipline, separate from philosophy.

(ii) Introspection is the method of self-observation in which trained observers carefully examine and report their own conscious experiences (thoughts, feelings, sensations) under controlled conditions.

Criticism: Introspection was criticised because:

• It was highly subjective — different observers reported different experiences
• Results could not be independently verified or replicated
• It could not study the behaviour of children, animals, or mentally disturbed individuals

(iii) Structuralism (Titchener) aimed to identify the basic elements or structures of consciousness by breaking it into components (images, feelings, sensations).

Functionalism (William James) was more interested in the functions or purposes of consciousness — how mental processes help individuals adapt to their environment. It was influenced by Darwin’s theory of evolution and focused on the practical value of mental life.

(i) The claim may not be scientifically valid. While psychology uses systematic and verifiable methods, a commercial app’s algorithm may not have been validated through rigorous scientific research. Personality is a complex construct that cannot be accurately measured solely through social media activity. It requires standardised psychological tests that have proven reliability and validity.

(ii) Ethical concerns:

1. Privacy and confidentiality — Users’ personal data (social media posts) may be collected, stored, and used without informed consent or may be shared with third parties.
2. Potential for harm — Inaccurate personality labels can lead to stigma, self-fulfilling prophecies, or misuse (e.g., by employers or educational institutions to discriminate against individuals).

(iii) Clinical Psychology and/or Psychometrics (a subfield of psychology concerned with the measurement of psychological attributes) would be most relevant. Specifically, psychologists specialising in psychological testing and assessment evaluate whether personality instruments are reliable (consistent) and valid (measure what they claim to measure).

(c) Experiment

Only the experimental method, with its controlled manipulation of the independent variable and random assignment to groups, can establish cause-and-effect relationships.

(c) A strong negative relationship

The magnitude \(|r| = 0.85\) indicates a strong relationship. The negative sign means that as one variable increases, the other decreases.

(d) Standard Deviation

Standard deviation is a measure of variability (dispersion), not central tendency. It measures how spread out the data values are from the mean.

(b) Debriefing

Debriefing involves explaining the true nature and purpose of the study to participants after their participation, especially if any deception was used.

(c) Case study

A case study is an intensive investigation of a single individual (or a small group), using multiple sources of data like interviews, observations, and records.

Example: In a study on the effect of sleep on memory:

• IV: Number of hours of sleep (e.g., 4 hours vs. 8 hours)
• DV: Score on a memory test

The researcher manipulates the amount of sleep and measures how it affects memory performance.

Correlation indicates that two variables are related — they tend to change together. However, this does not mean that one causes the other.

Example: There is a positive correlation between ice cream sales and drowning incidents. This does not mean ice cream causes drowning. Both are influenced by a third variable — hot weather. People buy more ice cream and swim more in summer, leading to both higher sales and more drowning incidents.

To establish causation, one would need a controlled experiment where the independent variable is manipulated and all other variables are kept constant.

Reliability: A test is reliable when it produces consistent and stable results across different occasions, raters, or versions.

• Example: If a student takes an IQ test on Monday and again on Friday, a reliable test should give similar scores both times.

Validity: A test is valid when it measures what it claims to measure.

• Example: An intelligence test is valid if it truly measures intelligence and not just memory or vocabulary.

A test can be reliable but not valid (consistently measuring the wrong thing), but a valid test must also be reliable.

The Experimental Method is the most rigorous method in psychology, designed to establish cause-and-effect relationships.

Key Features:

1. Manipulation of the IV: The researcher deliberately changes one variable (IV) to observe its effect on another variable (DV).

2. Control of extraneous variables: Other variables that could affect the DV are kept constant or controlled.

3. Random assignment: Participants are randomly assigned to the experimental group (receives the treatment) or the control group (does not receive the treatment).

4. Measurement of the DV: The outcome is objectively measured.

Example: To test whether meditation reduces anxiety:

• IV: Meditation (practised vs. not practised)
• DV: Anxiety score on a standardised scale
• Experimental group: Practises 20 minutes of meditation daily for 4 weeks
• Control group: Does not practise meditation
• After 4 weeks, anxiety scores of both groups are compared.

Strengths:

• Can establish cause-and-effect
• High control over variables
• Replicable — other researchers can repeat the study
• Results can be statistically analysed

Limitations:

• Artificial setting may reduce ecological validity (results may not generalise to real life)
• Ethical issues: Some variables cannot be manipulated for ethical reasons (e.g., deliberately causing stress)
• Demand characteristics: Participants may guess the purpose and alter their behaviour
• Experimenter bias: The researcher’s expectations may unconsciously influence results

Psychological research involves human participants, so researchers must follow strict ethical guidelines to protect their rights and well-being.

Key Ethical Issues:

1. Informed Consent: Participants must be given clear information about the purpose, procedures, risks, and benefits of the study. They must voluntarily agree to participate.

2. Confidentiality: All personal data collected must be kept private. Participants should not be identifiable in published reports.

3. Right to Withdraw: Participants must be free to leave the study at any time without penalty or negative consequences.

4. Freedom from Harm: Participants should not experience physical or psychological harm. If any risk exists, it must be minimised and clearly communicated.

5. Debriefing: After the study, participants should be informed about its true purpose, especially if deception was involved.

6. Minimal Deception: Deception should be avoided whenever possible. If it is necessary (e.g., to prevent demand characteristics), it must be justified, and participants must be debriefed afterwards.

7. Competence: Researchers must possess the necessary skills, training, and qualifications to conduct the study responsibly.

8. Special Populations: Extra care must be taken when studying children, mentally ill individuals, or other vulnerable groups, including obtaining consent from guardians.

Importance: Ethical guidelines ensure that the pursuit of scientific knowledge does not come at the cost of individual rights, dignity, and well-being.

(a) Both A and R are true and R is the correct explanation of A

Causation can only be established when the researcher manipulates one variable (IV) and measures the effect on another (DV) while controlling extraneous variables. In correlational research, no variable is manipulated — only the existing relationship is measured. Therefore, the reason correctly explains the assertion.

(i)

• Independent Variable (IV): Type of background noise (silence, soft music, loud traffic noise)
• Dependent Variable (DV): Score on the reading comprehension test

(ii) Random assignment is important because it ensures that each participant has an equal chance of being placed in any group. This helps to:

• Distribute individual differences (e.g., reading ability, intelligence) evenly across groups
• Reduce the influence of confounding variables
• Allow valid comparison of group outcomes

(iii) Yes, the researcher can reasonably conclude a causal relationship, because this is a true experiment:

• The IV (noise type) was manipulated
• Participants were randomly assigned to groups
• Extraneous variables were controlled (same reading material, same time duration)

However, she should also ensure the result is statistically significant and should acknowledge possible limitations (e.g., Hawthorne effect, demand characteristics).

(iv) The researcher should obtain informed consent — participants must be informed about the study’s purpose and procedures and must voluntarily agree to participate.

(i) Mean:

\[ \bar{x} = \frac{12 + 15 + 18 + 14 + 20 + 16 + 15}{7} = \frac{110}{7} \approx 15.71 \]

(ii) Median:

Arrange in ascending order: \(12, 14, 15, 15, 16, 18, 20\)

Since \(n = 7\) (odd), the median is the middle value (4th value):

\[ \text{Median} = 15 \]

(iii) Mode:

The most frequently occurring value is 15 (appears twice).

\[ \text{Mode} = 15 \]

(iv) Range:

\[ \text{Range} = X_{\max} - X_{\min} = 20 - 12 = 8 \]

(i) Suggested methods:

1. Survey (questionnaire): The principal can distribute a standardised anxiety questionnaire (e.g., a Likert-scale questionnaire on exam anxiety) to a large number of Class 11 students. This is suitable because it can quickly collect data from many students and identify patterns.

2. Interview (semi-structured): She can conduct one-on-one interviews with a smaller sample of students who report high anxiety. This is suitable because it provides in-depth understanding of personal experiences, feelings, and triggers that a questionnaire may miss.

(ii) Data types:

1. Survey: Primarily quantitative data — numerical scores on the anxiety scale that can be statistically analysed.
2. Interview: Primarily qualitative data — verbal descriptions, narratives, and insights that need thematic analysis.

(iii) Limitations:

1. Survey: Students may not answer honestly due to social desirability bias (they may underreport anxiety to appear strong) or may not understand questions correctly.
2. Interview: It is time-consuming and can only cover a small number of students. The interviewer’s presence may also influence students’ responses.

(c) Conservation

Conservation is the understanding that certain properties of objects (quantity, volume, number) remain the same even when their appearance changes. This is typically achieved during the concrete operational stage (7–11 years).

(c) Identity vs. Role Confusion

During adolescence (12–19 years), the primary psychosocial task according to Erikson is to develop a clear sense of personal identity — understanding who you are, your values, and your place in society.

(b) Embryonic stage

The embryonic stage (2–8 weeks after conception) is a critical period for organ formation. Exposure to teratogens during this time can cause severe birth defects because the basic structures of all major organs are being established.

(b) It is unidirectional

According to the life-span perspective (Baltes), development is multidirectional — some abilities increase while others decrease. It is NOT unidirectional (one-way).

(b) Better social and emotional development later

Research shows that securely attached infants tend to develop better social skills, higher self-esteem, and more trusting relationships in later life.

Object permanence is the understanding that objects continue to exist even when they are not visible or cannot be perceived through the senses.

Stage: It develops during the sensorimotor stage (0–2 years) of Piaget’s theory.

Example: Before developing object permanence, if a toy is hidden under a blanket, the infant behaves as if the toy no longer exists. After achieving object permanence (around 8–12 months), the infant will actively search for the hidden toy, understanding that it still exists.

Teratogens are harmful environmental agents that can cause damage to the developing embryo or foetus during the prenatal period.

Examples:

1. Alcohol: Maternal alcohol consumption can lead to Foetal Alcohol Spectrum Disorders (FASD), characterised by facial abnormalities, growth retardation, and intellectual disabilities.

2. Certain medications (e.g., thalidomide): Some drugs taken during pregnancy can cause severe birth defects such as limb malformations or heart defects.

The embryonic stage (2–8 weeks) is particularly sensitive to teratogens because major organs are forming during this period.

Jean Piaget proposed that cognitive development occurs in four universal stages, each characterised by qualitatively different ways of thinking:

1. Sensorimotor Stage (0–2 years):

• The infant learns about the world through senses and motor actions
• Develops object permanence — understanding that objects exist even when not seen
• Moves from reflexive actions to intentional, goal-directed behaviour
• Example: A baby shakes a rattle to hear the sound

2. Preoperational Stage (2–7 years):

• Develops symbolic thinking — able to use words, images, and drawings to represent objects
• Rapid language development
• Displays egocentrism — difficulty seeing things from another person’s perspective
• Lacks conservation — cannot understand that quantity remains the same despite changes in appearance
• Example: A child thinks a tall, narrow glass has more water than a short, wide glass

3. Concrete Operational Stage (7–11 years):

• Develops logical thinking about concrete (tangible) objects
• Achieves conservation — understands that quantity is preserved despite changes in shape
• Can perform classification (grouping objects) and seriation (ordering objects)
• Thinking is still tied to concrete, real-world objects
• Example: A child understands that 5 + 3 = 8 using blocks, but struggles with purely abstract algebra

4. Formal Operational Stage (11 years and above):

• Develops abstract and hypothetical thinking
• Can think about possibilities, not just realities
• Systematic problem-solving — can test hypotheses in an organised way
• Develops metacognition — thinking about one’s own thinking
• Example: An adolescent can debate philosophical questions or plan a scientific experiment

Evaluation:

• Piaget provided the first comprehensive theory of cognitive development
• Criticised for underestimating children’s abilities and for not accounting for cultural differences

Erik Erikson proposed that personality develops through eight psychosocial stages across the entire life span. At each stage, the individual faces a psychosocial crisis — a developmental challenge that must be resolved.

Stages relevant to childhood and adolescence:

1. Trust vs. Mistrust (0–1 year):

• The infant depends on the caregiver for basic needs
• Positive outcome: If needs are met consistently, the infant develops trust in the world
• Negative outcome: Inconsistent or neglectful care leads to mistrust and insecurity

2. Autonomy vs. Shame and Doubt (1–3 years):

• The toddler begins to explore and do things independently (walking, feeding)
• Positive outcome: Supportive caregivers foster autonomy and confidence
• Negative outcome: Overly controlling or critical parents lead to shame and self-doubt

3. Initiative vs. Guilt (3–6 years):

• The child takes initiative in play, asks questions, and explores
• Positive outcome: Encouragement develops purpose and confidence
• Negative outcome: Criticism or punishment leads to guilt about desires and actions

4. Industry vs. Inferiority (6–12 years):

• The child focuses on learning skills valued by society (reading, maths, sports)
• Positive outcome: Success leads to a sense of competence
• Negative outcome: Repeated failure or unfavourable comparison with peers leads to inferiority

5. Identity vs. Role Confusion (12–19 years):

• The adolescent explores various roles, values, and beliefs to form a coherent identity
• Positive outcome: Successful exploration leads to a strong sense of identity
• Negative outcome: Failure to explore or commit leads to role confusion — uncertainty about one’s place in society

Significance:

• Erikson’s theory is one of the few that spans the entire life span
• It highlights the role of social relationships and culture in development
• It provides a useful framework for understanding the psychological challenges of each life stage

(a) Both A and R are true and R is the correct explanation of A

The life-span perspective states that development is multidirectional — at any given stage, some capacities increase (e.g., vocabulary in old age) while others decrease (e.g., reaction time). The reason correctly explains why development is not simply one-directional growth.

(i) Ravi is in the stage of adolescence (12–19 years).

(ii) According to Erikson, Ravi is experiencing the crisis of Identity vs. Role Confusion. He is trying to form a coherent sense of self — exploring different roles, values, and career options.

(iii) Two challenges:

1. Peer influence — Ravi prefers spending time with friends over family, suggesting the growing importance of peer group and the need to belong.
2. Identity confusion — His frequent career changes and concern about appearance reflect the struggle to establish a clear identity.

(iv) Ravi’s parents can support him by:

• Providing a supportive and non-judgmental environment where he feels comfortable discussing his concerns
• Encouraging him to explore different interests without pressure, while offering guidance and being available as a safety net
• Maintaining open communication and showing interest in his life without being overly controlling

(i) According to Piaget:

• Aarti (5 years) is in the preoperational stage. At this stage, children focus on the most striking visual feature (the height of the glass) and cannot mentally reverse the pouring action. This is called centration — focusing on only one dimension.
• Meera (9 years) is in the concrete operational stage. She can logically reason that the quantity of water has not changed despite the change in the container’s shape.

(ii) Meera has achieved conservation — the understanding that certain properties (quantity, volume) remain the same even when the appearance changes. Aarti has not yet developed this ability.

(iii)

• Aarti (5 years): Preoperational stage (2–7 years)
• Meera (9 years): Concrete operational stage (7–11 years)

(This is a reflective question. A model answer is provided below.)

Challenge: During early adolescence, I faced significant academic pressure and uncertainty about which stream (Science, Commerce, or Humanities) to choose. This was combined with peer pressure, as many of my friends were choosing Science, and there was a social expectation that Science was the “best” stream.

How I dealt with it: I explored my interests through conversations with teachers, reading about different career options, and reflecting on which subjects I genuinely enjoyed. My parents also provided a supportive environment, encouraging me to follow my interests rather than peer pressure.

Connection to theory: This experience relates to Erikson’s Identity vs. Role Confusion crisis. The stream selection was part of the larger process of identity formation — exploring who I am, what I value, and what I want to become. By making an informed, independent decision, I moved towards identity achievement rather than remaining in role confusion.

(c) Transduction

Transduction is the process by which sensory receptors convert physical stimuli (light, sound, pressure) into neural signals that the brain can interpret.

(b) Perception can be influenced by contextual cues

In the Müller-Lyer illusion, two lines of equal length appear different because of the direction of arrowheads, showing that our interpretation of stimuli is influenced by surrounding context.

(b) Selective attention

The cocktail party effect demonstrates our ability to focus on one conversation in a noisy environment while filtering out others — a clear example of selective attention.

(c) Closure

The principle of closure states that we tend to perceive incomplete figures as complete by mentally filling in the missing parts.

(b) Binocular cue

Retinal (binocular) disparity relies on the slight difference between the images received by each eye. The brain uses this difference to perceive depth. It requires both eyes.

Sensation is the raw input; perception is the meaningful interpretation of that input.

1. Relative size: When two objects are of similar actual size, the one that produces a smaller retinal image is perceived as farther away. E.g., a car far away appears smaller than one nearby.

2. Interposition (overlap): When one object partially blocks another, the blocking object is perceived as closer. E.g., a book placed on top of a stack appears closest.

3. Linear perspective: Parallel lines (like railway tracks) appear to converge as they extend into the distance. The point of convergence suggests greater distance.

Perceptual constancy is the tendency to perceive familiar objects as having a stable size, shape, colour, and brightness despite changes in the sensory input reaching our eyes.

Types:

1. Size constancy: We perceive an object as the same size regardless of its distance from us. E.g., a friend walking away does not appear to shrink, even though the retinal image of the friend becomes smaller.

2. Shape constancy: We perceive an object as the same shape regardless of the viewing angle. E.g., a circular plate viewed from an angle projects an elliptical image on the retina, but we still perceive it as circular.

Gestalt psychologists proposed that the brain organises sensory information according to certain innate principles — often summarised as “The whole is greater than the sum of its parts.”

1. Figure–Ground:

• We tend to perceive objects (figure) against a background (ground)
• Example: Words (figure) on a page (ground); Rubin’s vase — the image can be seen as either a vase or two faces

2. Proximity:

• Elements that are close together are perceived as belonging to the same group
• Example: ●● ●● ●● — we see three pairs of dots, not six individual dots

3. Similarity:

• Elements that are similar (in colour, shape, or size) are grouped together
• Example: A row of alternating red and blue circles — we see groups of same-coloured circles

4. Continuity:

• We tend to perceive elements arranged in a smooth line or curve as belonging together
• Example: Two crossing curves are seen as two continuous lines rather than four separate segments

5. Closure:

• We tend to fill in gaps to perceive incomplete figures as complete
• Example: A circle with a small gap is still perceived as a complete circle

6. Symmetry:

• Symmetrical elements are perceived as a unified whole
• Example: Symmetrical bracket shapes [ ] are perceived as a single object

Significance: These principles show that perception is an active, organised process — not merely a passive recording of stimuli. They have applications in design, advertising, and art.

Attention is the cognitive process of selectively concentrating on one aspect of the environment while ignoring others. It is essential because our sensory systems receive far more information than we can process at any given moment.

Types of Attention:

• Selective attention: Focusing on one stimulus while ignoring others
• Sustained attention (vigilance): Maintaining focus over a prolonged period
• Divided attention: Attending to multiple stimuli or tasks simultaneously

Factors Influencing Selective Attention:

A. External (stimulus) factors:

1. Size: Larger stimuli are more likely to attract attention (e.g., a large advertisement)
2. Intensity: Brighter lights, louder sounds attract more attention
3. Novelty: Unusual or unexpected stimuli capture attention (e.g., a person in costume on the street)
4. Movement: Moving objects attract attention more than stationary ones
5. Contrast: A stimulus that stands out from its background draws attention (e.g., a red dot on a white page)
6. Repetition: Repeated stimuli (like a recurring alarm) capture attention

B. Internal (perceiver) factors:

1. Motivation: We attend to stimuli relevant to our current needs (e.g., a hungry person notices food advertisements)
2. Interest: We attend more to things we find interesting
3. Expectations (perceptual set): We attend to stimuli we expect to encounter
4. Past experience: Familiar stimuli are processed more quickly
5. Emotional state: Anxious individuals may attend more to threatening stimuli

Significance: Understanding attention is important in education (maintaining student focus), driving safety, workplace efficiency, and clinical psychology (attention deficit disorders).

(a) Both A and R are true and R is the correct explanation of A

Colour constancy is the tendency to perceive the colour of a familiar object as relatively constant despite changes in illumination. The white shirt continues to appear white because our perceptual system compensates for the change in lighting conditions.

(i) Neha is demonstrating two types of attention:

• Selective attention — she focuses on her textbook while filtering out the TV, conversation, and barking
• Sustained attention — she maintains this focus for 45 minutes

(ii) The cocktail party effect is demonstrated when Neha immediately notices her name being called, despite filtering out other sounds. This shows that even when we are selectively attending to one source, personally relevant stimuli (like our own name) can break through the attentional filter and capture our awareness.

(iii) The decline in Neha’s ability to maintain focus after a prolonged period is called vigilance decrement — a natural decrease in sustained attention that typically occurs during monotonous or demanding tasks.

(iv) Two strategies:

1. Take short breaks (e.g., 5–10 minutes every 30–40 minutes) to allow attentional resources to recover — the Pomodoro technique
2. Reduce distractions — study in a quieter room, use noise-cancelling headphones, or request family members to lower the TV volume during study hours

(i) Meera and Karan perceive the same cloud differently because perception is not merely a passive recording of sensory data — it is an active, constructive process influenced by the perceiver’s knowledge, expectations, experiences, and interests. The same physical stimulus (cloud) is interpreted differently because each person brings their own mental framework to the interpretation.

(ii) This situation is best explained by top-down processing — perception guided by existing knowledge, expectations, and mental schemas rather than by the raw sensory data alone. The ambiguous shape of the cloud allows each person’s prior experiences and imagination to shape what they “see.”

(iii) Two internal factors:

1. Past experience: Meera may have recently seen pictures of rabbits or is fond of animals, making her more likely to interpret the shape as a rabbit. Karan may have recently watched a movie about ships.
2. Interests and motivation: Individual interests influence what patterns the brain seeks out in ambiguous stimuli. A person interested in maritime adventures might see a ship; an animal lover might see a rabbit.

(b) Conditioned stimulus (CS)

After repeated pairing with the unconditioned stimulus (food), the previously neutral bell becomes a conditioned stimulus that can trigger salivation on its own.

(d) Negative punishment

Something pleasant (recess) is removed after the behaviour, causing the behaviour (misbehaving) to decrease. This is negative punishment.

(c) Observational learning

Children learned aggressive behaviour by watching an adult model, without being directly reinforced themselves. This demonstrated Bandura’s theory of observational (social) learning.

(b) Variable ratio schedule

Slot machines reinforce after an unpredictable number of responses. Variable ratio schedules produce the highest and most consistent rate of responding and are most resistant to extinction.

(d) Dyspepsia

Dyspepsia is a medical condition (indigestion), not a learning disability. Dyslexia (reading), dyscalculia (mathematics), and dysgraphia (writing) are all learning disabilities.

Reinforcement is any consequence that increases the frequency of a behaviour.

• Positive reinforcement: Adding something pleasant. E.g., A teacher gives a star to a student who completes homework → the student completes homework more regularly.
• Negative reinforcement: Removing something unpleasant. E.g., A seat belt alarm stops buzzing when you buckle up → you buckle up more quickly.

Punishment is any consequence that decreases the frequency of a behaviour.

• Positive punishment: Adding something unpleasant. E.g., A child is scolded for lying → the child lies less.
• Negative punishment: Removing something pleasant. E.g., A teenager loses screen time for poor grades → the teenager studies more.

Latent learning is learning that occurs without any obvious reinforcement and is not demonstrated until there is a motivation or incentive to display it.

Tolman’s maze experiment:

• Three groups of rats were placed in a maze over several days
• Group 1: Rewarded with food every day — learned the maze steadily
• Group 2: Never rewarded — showed little improvement
• Group 3: Not rewarded for the first 10 days, then rewarded from day 11

On day 11, Group 3 suddenly performed as well as Group 1, demonstrating that they had already learned the maze layout (formed a cognitive map) during the unrewarded period. They simply had no motivation to demonstrate it earlier.

This showed that learning can occur without reinforcement and that mental representations play a role in learning.

Classical conditioning is a type of learning in which a previously neutral stimulus comes to elicit a response after being paired with an unconditioned stimulus.

Pavlov’s Experiment:

1. Before conditioning: Food (UCS) naturally produces salivation (UCR). A bell (NS) produces no salivation.

2. During conditioning: The bell is sounded just before food is presented. This pairing is repeated multiple times.

3. After conditioning: The bell alone (now CS) produces salivation (now CR).

Key Processes:

1. Acquisition: The stage during which the CS-UCS association is established through repeated pairings. The strength of the CR increases with each pairing.

2. Extinction: If the CS (bell) is presented repeatedly without the UCS (food), the CR (salivation) gradually weakens and eventually disappears.

3. Spontaneous recovery: After a rest period following extinction, the CS may again produce the CR, though it is usually weaker. This shows that extinction does not completely erase the learned association.

4. Stimulus generalisation: The CR may be triggered by stimuli similar to the CS. E.g., Pavlov’s dog may salivate to bells of different pitches.

5. Stimulus discrimination: With training, the organism learns to distinguish between the CS and similar stimuli, responding only to the specific CS.

Real-life example: A child bitten by a dog (UCS) develops fear (UCR). Later, the child fears all dogs (stimulus generalisation through classical conditioning).

Observational learning (also called social learning or modelling) is the process of learning by watching the behaviour of others (models) and noting the consequences of that behaviour.

Albert Bandura’s Social Learning Theory proposes that a significant amount of human learning occurs through observing others, without direct personal reinforcement.

Bobo Doll Experiment (1961):

• Children were divided into groups and shown an adult model interacting with a Bobo doll (inflatable toy)
• Group 1: Observed an adult behaving aggressively (punching, kicking, hitting the doll with a mallet)
• Group 2: Observed an adult playing calmly
• Group 3: No model (control group)
• When later left alone with the Bobo doll, children who observed the aggressive model displayed significantly more aggressive behaviour

Four Steps in Observational Learning:

1. Attention: The learner must attend to the model’s behaviour. Factors: attractiveness of model, similarity, status
2. Retention: The learner must remember (encode) the observed behaviour in memory
3. Motor reproduction: The learner must be physically and cognitively capable of performing the behaviour
4. Motivation: The learner must be motivated to imitate. Motivation is enhanced by:
   • Vicarious reinforcement — seeing the model being rewarded
   • Self-reinforcement — personal satisfaction from performing the behaviour
   • Vicarious punishment — seeing the model punished decreases imitation

Significance:

• Explains how children learn social behaviours, gender roles, and aggression
• Highlights the influence of media, parents, and peers as models
• Has applications in education, therapy (modelling adaptive behaviours), and understanding the effects of media violence

(a) Both A and R are true and R is the correct explanation of A

Negative reinforcement increases behaviour by removing an aversive (unpleasant) stimulus after the behaviour occurs. The removal of discomfort makes the behaviour more likely to be repeated. For example, taking a painkiller (behaviour) removes a headache (unpleasant stimulus), so you are more likely to take it again in the future.

(i)

• Week 1: Positive reinforcement — a pleasant stimulus (star sticker) is added after the desired behaviour (cleaning the room), increasing its frequency.
• Week 2: Positive punishment — an aversive stimulus (scolding) is added after the undesired behaviour (not cleaning), aiming to decrease it.

(ii) Week 3 illustrates extinction — the reinforcement (stickers) is no longer provided, so the previously reinforced behaviour (cleaning) gradually decreases and eventually stops.

(iii) A more effective long-term strategy would be to use a variable ratio schedule of reinforcement:

• Instead of rewarding every single instance, give rewards unpredictably (e.g., stickers sometimes, verbal praise other times)
• This creates a pattern that is highly resistant to extinction
• Also, gradually shifting from external reward to intrinsic motivation (e.g., praising the feeling of having a clean room) would help sustain the behaviour

(iv) Week 1 (positive reinforcement) is generally more effective because:

• It teaches the child what to do (clean the room), not just what not to do
• It creates a positive association with the behaviour
• Punishment (Week 2) can create fear, resentment, and avoidance without teaching alternative behaviour
• Research shows reinforcement produces more lasting behavioural change than punishment

(i) The teacher should use shaping — the method of reinforcing successive approximations to the desired behaviour.

(ii) Step-by-step procedure:

1. First, reinforce the pigeon for any slight turn of the head in the desired direction
2. Once head-turning is established, withhold reinforcement until the pigeon turns its body slightly
3. Next, reinforce only a quarter turn
4. Then reinforce only a half turn
5. Then reinforce a three-quarter turn
6. Finally, reinforce only a complete 360-degree turn

At each step, the criterion for reinforcement becomes closer to the final desired behaviour.

(iii) Initially, a continuous reinforcement schedule (reinforcing every correct response) should be used. This helps the pigeon learn the new behaviour quickly. Once the behaviour is established, the teacher can gradually shift to a partial (intermittent) reinforcement schedule to make the behaviour more resistant to extinction.

(c) 7 ± 2 items

George Miller (1956) proposed that the capacity of short-term memory is approximately 7 ± 2 items (i.e., between 5 and 9 items). This is known as “Miller’s Magic Number.”

(b) Proactive interference

Proactive (forward-acting) interference occurs when previously learned information interferes with the ability to learn and remember new information.

(c) Procedural memory

Procedural memory is memory for motor skills and actions that are performed automatically. Riding a bicycle is a learned skill that, once acquired, can be performed without conscious effort.

(b) Craik and Lockhart

Craik and Lockhart (1972) proposed that memory depends not on which store information is in, but on how deeply it is processed — from shallow (physical) to deep (semantic) processing.

(b) Mnemonic technique

The method of loci involves mentally placing items to be remembered at specific locations along a familiar route. During recall, one “walks” through the route and retrieves the items at each location.

Both are types of declarative (explicit) memory — they can be consciously recalled and stated.

Proactive interference occurs when previously learned information interferes with the ability to remember newly learned information.

• Example: You recently changed your phone number. When someone asks for your new number, you accidentally give them your old number. The old number (prior learning) interferes with recalling the new one.

Retroactive interference occurs when newly learned information interferes with the recall of previously learned information.

• Example: After learning your new phone number, you now have difficulty remembering your old number. The new learning has retroactively interfered with the old memory.

Both types demonstrate that forgetting is often not due to the memory disappearing, but rather to competition from other memories.

Mnemonics are memory aids — strategies and techniques that help organise and encode information to make it easier to store and retrieve.

Two techniques:

1. Acronym: Creating a word from the first letters of items to be remembered.

   • Example: VIBGYOR — Violet, Indigo, Blue, Green, Yellow, Orange, Red (colours of the rainbow)

2. Method of Loci: Mentally placing items to be remembered at specific locations along a familiar route. To recall, one mentally “walks” through the route and retrieves the items.

   • Example: To remember a shopping list (milk, eggs, bread), imagine a bottle of milk at your front door, eggs on the staircase, and bread on the dining table.

The Atkinson-Shiffrin model (1968) proposes that memory consists of three distinct stores through which information flows sequentially:

1. Sensory Memory:

• Holds raw sensory information for a very brief period
• Duration: Less than 1 second for visual (iconic memory) and about 3–4 seconds for auditory (echoic memory)
• Capacity: Very large
• Function: Acts as a buffer; only information that is attended to passes to the next stage
• Information not attended to is quickly lost

2. Short-Term Memory (STM):

• Temporary storage for information currently being processed
• Duration: About 15–30 seconds without rehearsal
• Capacity: 7 ± 2 items (Miller’s Magic Number)
• Encoding: Primarily acoustic (sound-based)
• Can be maintained through rehearsal (repeating the information)
• Chunking can increase effective capacity by grouping items into meaningful units
• Information encoded through elaborative rehearsal moves to LTM

3. Long-Term Memory (LTM):

• Relatively permanent storage with potentially unlimited capacity
• Duration: From minutes to a lifetime
• Encoding: Primarily semantic (meaning-based)
• Types include episodic (personal events), semantic (facts), and procedural (skills)
• Retrieval requires appropriate cues; information may not be permanently lost — just inaccessible

Flow of information: External stimulus → Sensory memory → (attention) → STM → (encoding/rehearsal) → LTM → (retrieval) → STM

Evaluation:

• The model provides a clear, testable framework
• Criticised for being too simplistic — STM is now understood as “working memory” with multiple components

Forgetting is the inability to retrieve information that was previously encoded and stored in memory.

1. Trace Decay Theory:

• Memories create a physical or chemical trace in the brain
• If these traces are not used or rehearsed, they gradually weaken and fade over time
• Most applicable to short-term memory
• Ebbinghaus’s Forgetting Curve: Most forgetting happens rapidly after learning (within the first hour), and then the rate of forgetting slows down
• Criticism: Does not explain why old memories can sometimes be retrieved after long periods

2. Interference Theory:

• Forgetting occurs because other memories interfere with retrieval
• Proactive interference: Old memories interfere with the recall of new ones
  • E.g., Your old address makes it hard to remember your new one
• Retroactive interference: New memories interfere with the recall of old ones
  • E.g., After learning a new password, you forget the old one
• Interference is greater when the competing materials are similar

3. Retrieval Failure:

• Information is in LTM but cannot be accessed because the appropriate cues are absent
• Encoding specificity principle (Tulving): Retrieval is most successful when the conditions at retrieval match the conditions at encoding
• Context-dependent memory: Recall is better in the same physical environment where learning occurred
• State-dependent memory: Recall is better when the internal state (mood, physiological condition) matches
• Tip-of-the-tongue (TOT) phenomenon: The feeling of knowing the information but being unable to retrieve it

4. Motivated Forgetting (Repression):

• Proposed by Freud — painful or traumatic memories may be pushed into the unconscious mind
• Controversial — difficult to verify scientifically

Strategies to reduce forgetting: Regular review, spaced practice, deep processing, using mnemonics, adequate sleep.

(a) Both A and R are true and R is the correct explanation of A

According to the levels of processing theory (Craik & Lockhart), information processed at a deeper (semantic) level — focusing on meaning — results in stronger, more durable memories than information processed at a shallow level (focusing on physical appearance or sound). The reason correctly explains why deep processing enhances memory.

(i) Strategy A (reading three times in one day) is the least effective for long-term retention because:

• It involves massed practice (cramming), which leads to rapid forgetting
• The processing is likely to be shallow (maintenance rehearsal — repeating without thinking about meaning)
• According to Ebbinghaus’s forgetting curve, information not deeply encoded is forgotten rapidly

(ii) Strategy B uses the acronym technique — a mnemonic device where the first letters of items are combined to form a memorable word.

(iii) Strategy C involves deep (semantic) processing, as Priya is engaging with the meaning of the material through discussion and connecting it to real-life examples. This is effective because:

• Elaborative rehearsal creates more connections (associations) with existing knowledge
• According to the levels of processing theory, semantic processing leads to the strongest and most durable memories

(iv) Spaced practice (distributed learning):

• Instead of studying everything in one session, Priya should study the material over multiple shorter sessions spread across several days
• Psychological basis: Research consistently shows that spaced practice leads to better long-term retention than massed practice (the spacing effect). This allows time for memory consolidation and reduces interference between sessions.

(i) This is proactive interference — the old password (Delhi123) is interfering with the recall of the new password (Mumbai456). Previously learned information is disrupting new learning.

(ii) This is retroactive interference — the new password (Mumbai456) is now interfering with the recall of the old password (Delhi123). Newly learned information is disrupting the recall of previously learned information.

(iii) This example illustrates that forgetting is often not because memories have been permanently erased from the brain, but because other memories compete with and interfere with retrieval. The type of interference depends on the direction:

• Old → New = Proactive
• New → Old = Retroactive

Both the old and new passwords were stored in memory, but they interfered with each other’s retrieval at different points in time.

(b) Functional fixedness

Functional fixedness is the tendency to think of objects only in terms of their typical functions, which can hinder creative problem solving.

(c) Creativity

Divergent thinking involves generating multiple possible solutions to a problem and is the key cognitive process underlying creativity.

(b) Deductive reasoning

This follows the deductive structure (general premise → specific conclusion). Note: the conclusion is logically valid (it follows from the premises) but factually incorrect because the premise “all birds can fly” is false.

(c) Accommodation

Wallas’s model includes: Preparation, Incubation, Illumination, and Verification. Accommodation is a concept from Piaget’s cognitive development theory, not from the creativity model.

The Sapir-Whorf hypothesis (also called the linguistic relativity hypothesis) proposes that the language we speak influences or determines how we think and perceive the world.

Two versions:

1. Strong version (Linguistic Determinism): Language determines thought. Without the word for a concept, the concept cannot be thought. (Largely rejected by modern psychology.)

2. Weak version (Linguistic Relativity): Language influences thought and perception without fully determining it. E.g., cultures with many words for snow may perceive subtle differences more easily. (Widely supported.)

Creativity is the ability to produce ideas, solutions, or products that are both novel (original) and useful (appropriate, meaningful).

Characteristics of Creative Thinking:

• Originality — produces unique ideas
• Fluency — generates many ideas
• Flexibility — shifts between different approaches
• Elaboration — develops ideas in rich detail

Divergent vs. Convergent Thinking:

• Divergent thinking generates multiple possible solutions — central to creativity
• Convergent thinking narrows options to find the best single answer — central to analytical reasoning

Process of Creative Thinking (Wallas’s Model):

1. Preparation: Intensive study and gathering of information about the problem
2. Incubation: The problem is set aside; unconscious processing occurs without deliberate effort
3. Illumination: A sudden flash of insight — the creative solution appears
4. Verification: The solution is tested, refined, and evaluated

Enhancing Creativity:

1. Brainstorming — generating ideas freely without criticism
2. Encouraging curiosity — exploring diverse interests and perspectives
3. Tolerating ambiguity — being comfortable with uncertainty and open-ended problems
4. Creating a supportive environment — schools and workplaces that value experimentation and do not punish failure
5. Lateral thinking (de Bono) — deliberately approaching problems from unconventional directions
6. Exposure to diverse experiences — travel, reading, meeting people from different backgrounds

(i) Most students experienced functional fixedness — they saw the thumbtack box only as a container for thumbtacks, not as a potential shelf or platform for the candle.

(ii) The successful student demonstrated divergent thinking — the ability to see multiple possible uses for the same object and think beyond conventional functions.

(iii) The successful student used insight (the “aha!” moment) — a sudden restructuring of the problem that led to a novel solution.

(iv) Teachers can help students overcome functional fixedness by:

• Encouraging brainstorming without immediate judgment
• Presenting objects in non-traditional contexts (e.g., “How many uses can you think of for a brick?”)
• Teaching lateral thinking techniques that encourage looking at problems from different angles
• Creating a classroom culture where mistakes and unusual ideas are valued, not punished

(i) This illustrates the framing effect — the way information is presented (framed) significantly influences people’s decisions and judgements, even when the underlying facts are identical.

(ii) The framing effect affects decision-making by causing people to make different choices based on whether the same information is presented in a positive frame (emphasising gains — “90% survive”) or a negative frame (emphasising losses — “10% die”). People tend to be:

• Risk-averse when options are framed as gains (they prefer the safe option)
• Risk-seeking when options are framed as losses (they take bigger risks to avoid losses)

(iii) Everyday example: A food product labelled “95% fat-free” is perceived more favourably than the same product labelled “contains 5% fat”, even though both convey identical information. Advertisers deliberately use positive framing to make products seem healthier or more appealing.

(c) Physiological needs

In Maslow’s hierarchy, physiological needs (food, water, sleep) are at the base and must be satisfied before higher-level needs become motivating.

(c) Moderate difficulty

People high in n-Ach prefer moderately difficult tasks — challenging enough to provide satisfaction upon success, but not so difficult that failure is almost certain.

(b) Jealousy

Ekman’s universally recognised basic emotions are: happiness, sadness, anger, fear, disgust, and surprise. Jealousy is a complex social emotion, not a basic one.

(b) Hypothalamus

The hypothalamus contains the lateral hypothalamus (hunger centre — stimulates eating) and the ventromedial hypothalamus (satiety centre — signals when to stop eating).

Intrinsic motivation is often considered more valuable for deep learning and long-term engagement, while extrinsic motivation can be effective for initiating new behaviours.

Self-actualisation is the highest level in Maslow’s hierarchy of needs. It refers to the desire to realise one’s full potential — to become everything one is capable of becoming.

Characteristics of self-actualised people (according to Maslow):

• Creative and spontaneous
• Accept themselves and others
• Have a strong sense of purpose
• Experience deep, meaningful relationships
• Have “peak experiences” — moments of intense joy and fulfilment

Maslow believed that self-actualisation is possible only after lower-level needs (physiological, safety, love, esteem) are substantially met. However, he noted that very few people fully achieve self-actualisation.

Example: An artist who paints not for money or fame but for the sheer joy of creative expression is pursuing self-actualisation.

Maslow’s Hierarchy of Needs is a motivational theory that arranges human needs in a pyramid with five levels:

1. Physiological needs (base) — Food, water, sleep, oxygen — essential for basic survival
2. Safety needs — Security, stability, protection from danger and uncertainty
3. Love and belonging needs — Friendships, family bonds, romantic relationships, sense of community
4. Esteem needs — Self-respect, confidence, recognition, achievement
5. Self-actualisation (top) — Realising full potential, creativity, personal growth

Key principle: Lower-level needs must be substantially satisfied before higher-level needs become primary motivators. A person who is starving will focus on obtaining food before seeking social connections or self-fulfilment.

Strengths:

• Provides a comprehensive and intuitive framework for understanding human motivation
• Recognises that motivation is not just about survival — humans have higher-order psychological needs
• Has practical applications in education, management, counselling, and marketing
• Highlights the concept of self-actualisation, inspiring humanistic approaches

Limitations:

• The hierarchy may be too rigid — people can pursue higher needs even when lower ones are not fully met (e.g., an artist who creates despite poverty)
• Cultural bias: The hierarchy prioritises individual achievement (self-actualisation), which may be more valued in individualistic Western cultures. Collectivist cultures may prioritise community and belonging over individual fulfilment
• Difficult to test scientifically: The concepts of “need satisfaction” and “self-actualisation” are subjective and hard to measure empirically
• Some critics argue needs can be pursued simultaneously rather than sequentially

(a) Both A and R are true and R is the correct explanation of A

Ekman’s cross-cultural research demonstrated that people from diverse cultures (including isolated tribes) could recognise and produce the same basic emotional expressions. This supports the idea that basic emotional expressions have a biological/evolutionary basis and are universal.

(i) Meera has intrinsic motivation for painting — she paints because she finds it personally enjoyable and fulfilling, not for any external reward.

(ii) Her parents are trying to create extrinsic motivation for studying — offering an external reward (a new phone) as an incentive for achieving high marks.

(iii) Painting is fulfilling Meera’s need for self-actualisation — the highest level in Maslow’s hierarchy. Through painting, she is expressing her creativity and realising her artistic potential.

(iv) This phenomenon is called the overjustification effect. When people who are already intrinsically motivated to perform an activity are given external rewards for it, they may start to attribute their behaviour to the reward rather than their own interest. If the reward is later removed, their motivation for the activity may decrease below the original level because they no longer see themselves as doing it “for fun” but rather “for the reward.”

Example: If Meera’s parents start giving prizes for every painting she creates, she may gradually lose her intrinsic love for painting and only paint when a reward is expected.

(i) Arjun is experiencing anger (and frustration).

(ii) His reaction is maladaptive because:

• Shouting at his sister and throwing objects are aggressive behaviours directed at people/objects unrelated to the source of frustration
• These actions can harm relationships, damage property, and do not solve the original problem (failing the driving test)

(iii) Two healthy strategies:

1. Cognitive reappraisal: Arjun could reinterpret the situation — instead of seeing the failure as a catastrophe, he could view it as a learning experience (“I know what to improve next time”). This changes the emotional impact of the event.

2. Physical exercise or relaxation: He could go for a run, practise deep breathing, or take a walk to release the physiological tension caused by anger. Physical activity reduces stress hormones and improves mood.

(iv) This concept is called displacement — a defence mechanism (described by Freud) in which a person redirects negative emotions from a threatening target (the driving test/examiner) to a less threatening or more accessible target (the younger sister, objects in the room).