Chapter 1: Variations in Psychological Attributes
Unit I – Variations in Psychological Attributes (13 Marks)
1.1 Introduction
Every individual is unique. People differ in how they think, feel, and act. These differences are seen in intelligence, aptitude, personality, values, interests, and other psychological characteristics. Psychology studies these individual differences scientifically.
Key idea: No two people — not even identical twins — are exactly alike in all psychological attributes.
1.2 Individual Differences in Human Functioning
Individual differences refer to the distinctiveness and uniqueness of each person. These differences arise from the interaction of heredity and environment.
| Factor | Description |
|---|---|
| Heredity | Genetic makeup inherited from parents — sets the biological potential |
| Environment | Family, culture, education, nutrition, experiences — shapes how potential is realised |
Example: Two children may inherit similar genetic potential for intelligence, but the one who receives better nutrition, education, and a stimulating home environment may develop higher measured intelligence.
Situational Factors
Even the same person may behave differently in different situations. A student who is quiet in class may be very talkative among friends. Both personal traits and situational factors influence behaviour.
1.3 Assessment of Psychological Attributes
Assessment is the systematic measurement of psychological attributes using standardised tools and procedures.
What is Assessed?
Psychologists assess attributes such as:
- Intelligence — general mental ability
- Aptitude — potential to acquire a specific skill
- Interest — preference for certain activities
- Personality — characteristic patterns of behaviour, thought, and emotion
- Values — beliefs about what is important in life
Methods of Assessment
| Method | Description |
|---|---|
| Psychological tests | Standardised instruments with established reliability and validity |
| Interview | Face-to-face conversation to gather information |
| Observation | Watching and recording behaviour in natural or controlled settings |
| Case study | In-depth investigation of a single individual |
| Self-report | Questionnaires where individuals describe their own attributes |
1.4 Intelligence
Intelligence is one of the most studied psychological attributes. It refers to the global capacity of an individual to think rationally, act purposefully, and deal effectively with the environment.
1.4.1 What is Intelligence?
Different psychologists have defined intelligence differently:
| Psychologist | Definition |
|---|---|
| Alfred Binet | The ability to judge well, understand well, and reason well |
| David Wechsler | The aggregate or global capacity to act purposefully, think rationally, and deal effectively with the environment |
| Gardner | The ability to solve problems or create products valued in one or more cultural settings |
1.4.2 Is Intelligence a Single Ability or a Set of Abilities?
There has been a long-standing debate:
- Uni-factor theory — Intelligence is a single general ability (Binet)
- Two-factor theory — Intelligence has a general factor (g) and specific factors (s) (Spearman)
- Multi-factor theories — Intelligence consists of multiple independent abilities
1.5 Theories of Intelligence
1.5.1 Psychometric / Structural Approach
Spearman’s Two-Factor Theory
Charles Spearman proposed that intelligence consists of:
- g-factor (General Intelligence): A common factor underlying all mental abilities
- s-factor (Specific Abilities): Abilities specific to particular tasks
Mathematical relationship: Any intellectual task performance depends on the g-factor plus a task-specific s-factor.
Thurstone’s Primary Mental Abilities
Louis Thurstone identified 7 primary mental abilities:
| Ability | Description |
|---|---|
| Verbal Comprehension | Understanding word meanings |
| Number Facility | Speed and accuracy in arithmetic |
| Spatial Relations | Visualising geometric patterns |
| Perceptual Speed | Quickly noting similarities/differences |
| Word Fluency | Producing words rapidly |
| Memory | Recall of paired associates |
| Inductive Reasoning | Deriving general rules from specifics |
Guilford’s Structure of Intellect (SI) Model
J.P. Guilford proposed that intelligence has three dimensions:
- Operations — what the person does (cognition, memory, divergent production, convergent production, evaluation)
- Contents — the nature of material (figural, symbolic, semantic, behavioural)
- Products — the form of information (units, classes, relations, systems, transformations, implications)
This yields \( 5 \times 4 \times 6 = 120 \) possible intellectual abilities.
1.5.2 Information Processing Approach: PASS Model
J.P. Das, Jack Naglieri, and Kirby proposed the PASS Model (Planning, Attention-Arousal, Simultaneous, Successive) based on A.R. Luria’s work on brain functioning.
| Component | Brain Region | Function |
|---|---|---|
| Planning | Frontal lobe | Setting goals, selecting strategies, monitoring performance |
| Attention-Arousal | Brain stem, reticular formation | Maintaining alertness, focusing attention, resisting distractions |
| Simultaneous Processing | Occipital-parietal lobes | Integrating information into a coherent whole (e.g., understanding a map) |
| Successive Processing | Frontal-temporal lobes | Processing information in a serial, step-by-step order (e.g., recalling a phone number) |
Key point: The PASS model links intelligence to brain functioning and argues that intelligence is not a single ability but a set of interdependent cognitive processes.
1.5.3 Sternberg’s Triarchic Theory of Intelligence
Robert Sternberg proposed that intelligence has three aspects (sub-theories):
| Sub-theory | Type of Intelligence | Description |
|---|---|---|
| Componential | Analytical Intelligence | Ability to analyse, compare, evaluate — tested by traditional IQ tests |
| Experiential | Creative Intelligence | Ability to deal with novel situations, combine experiences in new ways |
| Contextual | Practical Intelligence | Ability to adapt to, shape, or select environments — “street smartness” |
Key insight: Sternberg argued that traditional IQ tests measure only analytical intelligence and miss creative and practical intelligence.
1.5.4 Howard Gardner’s Theory of Multiple Intelligences
Howard Gardner argued that intelligence is not a single ability but a set of eight distinct intelligences:
| Intelligence | Core Ability | Example |
|---|---|---|
| Linguistic | Sensitivity to language, words | Writers, poets, lawyers |
| Logical-Mathematical | Logical reasoning, number operations | Scientists, mathematicians |
| Spatial | Mental imagery, spatial judgement | Architects, pilots, artists |
| Musical | Sensitivity to rhythm, melody, tone | Musicians, composers |
| Bodily-Kinaesthetic | Body movement control, physical skill | Athletes, dancers, surgeons |
| Interpersonal | Understanding others’ moods and motives | Leaders, counsellors, teachers |
| Intrapersonal | Understanding oneself, self-reflection | Philosophers, spiritual leaders |
| Naturalistic | Recognising and classifying natural objects | Biologists, farmers, botanists |
Key point: Gardner challenged the idea that IQ tests measure the full range of human intelligence. A person may be low in one intelligence but high in another.
1.6 Individual Differences in Intelligence
1.6.1 IQ: The Intelligence Quotient
The Intelligence Quotient (IQ) was developed to quantify intelligence.
Stern’s formula (ratio IQ):
\[ IQ = \frac{\text{Mental Age (MA)}}{\text{Chronological Age (CA)}} \times 100 \]
- If MA = CA, then IQ = 100 (average intelligence)
- If MA > CA, then IQ > 100 (above average)
- If MA < CA, then IQ < 100 (below average)
Modern tests use the deviation IQ, which compares an individual’s score with the scores of others in the same age group.
1.6.2 Distribution of Intelligence
IQ scores in the population follow a normal distribution (bell-shaped curve):
1.6.3 Variations in Intelligence
| IQ Range | Classification | Approximate % |
|---|---|---|
| Above 130 | Gifted / Very Superior | ~2% |
| 120–130 | Superior | ~7% |
| 110–119 | High Average | ~16% |
| 90–109 | Average | ~50% |
| 80–89 | Low Average | ~16% |
| 70–79 | Borderline | ~7% |
| Below 70 | Intellectual Disability | ~2% |
Intellectual Disability
Previously termed “mental retardation,” intellectual disability is characterised by:
- IQ below 70
- Significant limitations in adaptive behaviour (self-care, communication, social skills)
- Onset before age 18
| Level | IQ Range | Characteristics |
|---|---|---|
| Mild | 55–69 | Can learn basic academic skills; can live independently with some support |
| Moderate | 40–54 | Can learn self-care; need moderate supervision |
| Severe | 25–39 | Limited communication; need considerable support |
| Profound | Below 25 | Need complete care and supervision |
Giftedness and Talent
Gifted individuals have IQ above 130 and show exceptional ability in one or more domains. They display:
- Rapid learning, advanced vocabulary
- High creativity and curiosity
- Superior problem-solving abilities
1.7 Culture and Intelligence
Culture influences what is considered “intelligent” in different societies.
| Western View | Indian/Eastern View |
|---|---|
| Emphasises speed, logic, analytical thinking | Emphasises wisdom, social competence, self-regulation |
| Focus on individual achievement | Focus on harmony, cooperation, spiritual understanding |
| Measured through standardised tests | Includes qualities like compassion, respect for elders, patience |
Technological Intelligence vs. Integral Intelligence:
- Technological intelligence: Focus on cognitive skills, speed, achievement (typically Western)
- Integral intelligence: Includes emotional, social, moral, and spiritual dimensions (typically Eastern/Indian)
1.8 Emotional Intelligence
Emotional Intelligence (EI) refers to the ability to perceive, understand, manage, and use emotions effectively. The concept was popularised by Daniel Goleman and originally proposed by Salovey and Mayer.
Components of Emotional Intelligence
| Component | Description |
|---|---|
| Perceiving emotions | Accurately recognising emotions in oneself and others |
| Using emotions | Using emotions to facilitate thinking and creativity |
| Understanding emotions | Comprehending emotional language, understanding how emotions change |
| Managing emotions | Regulating one’s own emotions; handling relationships effectively |
Key point: A high IQ does not guarantee success. People with high EI tend to have better interpersonal relationships, leadership skills, and mental health.
1.9 Special Abilities: Aptitude — Nature and Measurement
What is Aptitude?
Aptitude is the potential to acquire a specific skill or ability with training. It is different from both intelligence and achievement:
| Concept | Definition |
|---|---|
| Intelligence | General mental ability |
| Aptitude | Potential for a specific skill (e.g., mechanical, musical, clerical) |
| Achievement | What a person has already learned |
Measurement of Aptitude
Aptitude tests predict future performance in specific areas:
- Differential Aptitude Test (DAT) — measures verbal reasoning, numerical ability, abstract reasoning, mechanical reasoning, space relations, spelling, language usage, clerical speed
- General Aptitude Test Battery (GATB) — used for vocational guidance
1.10 Creativity
What is Creativity?
Creativity is the ability to produce ideas, solutions, or products that are both novel (original, unusual) and appropriate (useful, meaningful).
Relationship between Intelligence and Creativity
- A minimum level of intelligence (IQ ~120) is necessary for creativity — this is called the threshold hypothesis
- Beyond this threshold, intelligence and creativity are not strongly correlated
- Creative people are not necessarily the ones with the highest IQ; other factors like motivation, personality, and environment also matter
Tests of Creativity
| Test | Creator | What it Measures |
|---|---|---|
| Unusual Uses Test | Guilford | Number of uses for a common object (e.g., a brick) |
| Remote Associations Test | Mednick | Finding a word connecting three unrelated words |
| Torrance Tests of Creative Thinking (TTCT) | Torrance | Fluency, flexibility, originality, elaboration |
Characteristics of Creative People
- Fluency — generating many ideas
- Flexibility — shifting categories or approaches
- Originality — producing unique, uncommon ideas
- Elaboration — developing and refining ideas in detail
- Openness to experience, tolerance for ambiguity, intrinsic motivation
Key Terms Summary
| Term | Meaning |
|---|---|
| Individual differences | Distinctiveness and uniqueness of each person |
| Intelligence | Global capacity to think rationally, act purposefully, deal with environment |
| IQ | Intelligence Quotient — a score representing measured intelligence |
| g-factor | General intelligence (Spearman) |
| PASS model | Planning, Attention, Simultaneous, Successive processing (Das & Naglieri) |
| Triarchic theory | Analytical, creative, practical intelligence (Sternberg) |
| Multiple intelligences | Eight distinct intelligences (Gardner) |
| Emotional intelligence | Ability to perceive, use, understand, and manage emotions |
| Aptitude | Potential to acquire a specific skill |
| Creativity | Producing novel and appropriate ideas or products |
| Intellectual disability | IQ below 70 with deficits in adaptive behaviour |
| Giftedness | Exceptional ability (IQ above 130) |
Practice Questions
Section A – Multiple Choice Questions (1 mark each)
Q1. The PASS model of intelligence was proposed by:
(a) Sternberg (b) Gardner (c) J.P. Das, Naglieri and Kirby (d) Guilford
Answer
(c) J.P. Das, Naglieri and Kirby
The PASS (Planning, Attention-Arousal, Simultaneous, Successive) model is based on Luria’s neuropsychological framework and was proposed by J.P. Das, Jack Naglieri, and Kirby.
Q2. According to Sternberg’s Triarchic Theory, “street smartness” relates to:
(a) Analytical intelligence (b) Creative intelligence (c) Practical intelligence (d) Emotional intelligence
Answer
(c) Practical intelligence
Practical intelligence (contextual sub-theory) involves the ability to adapt to, shape, or select real-world environments — often called “street smartness.”
Q3. Which of the following is NOT one of Gardner’s eight intelligences?
(a) Musical (b) Emotional (c) Naturalistic (d) Bodily-Kinaesthetic
Answer
(b) Emotional
Emotional intelligence was proposed by Salovey and Mayer (popularised by Goleman), not by Gardner. Gardner’s eight intelligences include Linguistic, Logical-Mathematical, Spatial, Musical, Bodily-Kinaesthetic, Interpersonal, Intrapersonal, and Naturalistic.
Q4. The formula \( IQ = \frac{MA}{CA} \times 100 \) was proposed by:
(a) Binet (b) Wechsler (c) William Stern (d) Guilford
Answer
(c) William Stern
William Stern introduced the concept of the Intelligence Quotient as the ratio of Mental Age to Chronological Age, multiplied by 100.
Q5. The threshold hypothesis of creativity suggests that:
(a) Only people with IQ above 150 are creative
(b) A minimum level of intelligence is needed for creativity
(c) Intelligence and creativity are identical
(d) Creativity decreases with higher intelligence
Answer
(b) A minimum level of intelligence is needed for creativity
The threshold hypothesis states that a minimum IQ (around 120) is necessary for creative output. Beyond this threshold, the correlation between IQ and creativity is weak.
Section B – Short Answer Questions (2 marks each)
Q6. Distinguish between aptitude and intelligence.
Answer
| Feature | Intelligence | Aptitude |
|---|---|---|
| Scope | General mental ability | Potential for a specific skill area |
| Nature | Broad, affects all domains | Narrow, domain-specific |
| Measurement | IQ tests (e.g., Wechsler, Stanford-Binet) | Aptitude tests (e.g., DAT, GATB) |
| Purpose | Assess overall cognitive capacity | Predict future success in a specific area |
Example: A person may have average intelligence but high mechanical aptitude, indicating they could excel in engineering with training.
Q7. What is emotional intelligence? Name its four components.
Answer
Emotional Intelligence (EI) is the ability to perceive, understand, manage, and use emotions effectively in oneself and in relationships.
Four components (Salovey & Mayer):
- Perceiving emotions — accurately recognising emotions in self and others
- Using emotions — employing emotions to facilitate thinking and creativity
- Understanding emotions — comprehending emotion language and how emotions evolve
- Managing emotions — regulating one’s own emotions and handling interpersonal situations
Q8. Explain the concept of ‘g-factor’ and ‘s-factor’ in Spearman’s theory.
Answer
Charles Spearman proposed a Two-Factor Theory of intelligence:
-
g-factor (General Intelligence): A single underlying mental energy that influences performance on all cognitive tasks. It represents general mental ability common to all activities.
-
s-factor (Specific Abilities): Abilities unique to particular tasks. Each task has its own s-factor (e.g., verbal ability, mathematical ability, spatial ability).
According to Spearman, performance on any task = g + s. The g-factor explains why people who do well on one type of test tend to do well on others.
Section C – Long Answer Questions (5 marks each)
Q9. Explain Howard Gardner’s Theory of Multiple Intelligences. Why is it considered a departure from traditional views?
Answer
Gardner’s Theory of Multiple Intelligences proposes that intelligence is not a single, unitary ability but a collection of eight distinct intelligences:
- Linguistic — mastery of language (writers, poets)
- Logical-Mathematical — logical reasoning and numerical ability (scientists)
- Spatial — mental imagery and spatial judgement (architects, artists)
- Musical — sensitivity to sounds, rhythm, melody (musicians)
- Bodily-Kinaesthetic — physical coordination and dexterity (athletes, dancers)
- Interpersonal — understanding and interacting with others (counsellors, leaders)
- Intrapersonal — understanding oneself (philosophers, spiritual leaders)
- Naturalistic — recognising patterns in nature (biologists, farmers)
Why it is a departure from traditional views:
- Traditional IQ tests focus mainly on linguistic and logical-mathematical abilities, treating intelligence as a single dimension.
- Gardner argues that a person can be low in one intelligence but exceptional in another (e.g., a person who struggles with mathematics may be an outstanding musician).
- This theory broadens the concept of intelligence to include abilities valued in diverse cultural and professional contexts, not just academic performance.
- It has practical implications for education — teachers can cater to different learning styles and multiple forms of talent rather than relying only on verbal-analytical approaches.
Q10. Describe the PASS model of intelligence. How does it link intelligence to brain functioning?
Answer
The PASS Model was proposed by J.P. Das, Jack Naglieri, and Kirby based on A.R. Luria’s theory of brain functioning. PASS stands for:
1. Planning (Frontal Lobe):
- Involves setting goals, developing strategies, and monitoring performance
- Example: Planning how to study for an exam
2. Attention-Arousal (Brain Stem, Reticular Formation):
- Involves maintaining alertness and focus; resisting distractions
- Example: Concentrating during a lecture despite noise outside
3. Simultaneous Processing (Occipital-Parietal Lobes):
- Involves integrating separate pieces of information into a coherent whole
- Example: Understanding a map by seeing all parts together
4. Successive Processing (Frontal-Temporal Lobes):
- Involves processing information in a specific serial order
- Example: Remembering a sequence of steps in a recipe
Link to brain functioning:
- Each PASS component is associated with a specific brain region, making this a neuropsychological model of intelligence.
- Unlike traditional IQ tests that produce a single score, the PASS model identifies specific cognitive strengths and weaknesses linked to brain functioning.
- It has educational applications — a student weak in successive processing may need different teaching strategies than one weak in simultaneous processing.
Section D – Competency-Based Questions (CBSE Pattern)
Q11. (Assertion–Reason)
Assertion (A): A person with an IQ of 135 may not necessarily be highly creative.
Reason (R): Beyond a threshold IQ of about 120, intelligence and creativity are not strongly correlated.
(a) Both A and R are true and R is the correct explanation of A
(b) Both A and R are true but R is NOT the correct explanation of A
(c) A is true but R is false
(d) A is false but R is true
Answer
(a) Both A and R are true and R is the correct explanation of A
According to the threshold hypothesis, a minimum IQ (around 120) is necessary for creativity. Beyond this threshold, other factors such as motivation, personality traits (openness), and environmental support become more important than IQ in determining creativity. Therefore, having an IQ of 135 does not guarantee high creativity.
Q12. (Case Study)
Priya scored 145 on a standardised IQ test. She excels in academics, solves complex mathematical problems with ease, and has a remarkable memory. However, she finds it very difficult to work in groups, often gets into arguments with classmates, and struggles to understand why her friends are upset with her.
(i) Which type of intelligence does Priya excel in, according to Sternberg’s theory?
(ii) Which aspect of intelligence is she lacking? Explain.
(iii) Suggest one theory of intelligence that best accounts for Priya’s uneven profile.
(iv) How could developing emotional intelligence help Priya?
Answer
(i) Priya excels in Analytical Intelligence (Sternberg’s componential sub-theory) — she can analyse, compare, and evaluate information, which is reflected in her high IQ and academic success.
(ii) She appears to lack Emotional Intelligence — the ability to perceive, understand, and manage emotions in herself and others. Her difficulty in understanding friends’ feelings and constant arguments suggest poor interpersonal skills and emotion regulation.
(iii) Gardner’s Theory of Multiple Intelligences best accounts for her uneven profile. She may have high Logical-Mathematical and Linguistic intelligence but low Interpersonal intelligence. Gardner’s framework allows for strengths in some intelligences and weaknesses in others.
(iv) Developing emotional intelligence could help Priya:
- Perceive others’ emotions accurately (recognise when friends are upset)
- Understand the causes of others’ feelings
- Manage her own emotional responses (control temper during arguments)
- Build stronger relationships and collaborate effectively in groups, leading to better social and academic outcomes
Q13. (Source-Based)
Read the passage below and answer the questions:
“In many Western cultures, intelligence is closely associated with speed of processing, logical-analytical thinking, and academic achievement. In contrast, many non-Western cultures — including the Indian tradition — emphasise not just cognitive abilities but also social competence, moral understanding, self-regulation, and spiritual consciousness as integral parts of intelligence.”
(i) What is the Western view of intelligence as described in the passage?
(ii) How does the Indian/Eastern perspective differ?
(iii) What terms do psychologists use to distinguish these two views?
Answer
(i) The Western view of intelligence emphasises speed of mental processing, logical-analytical thinking, and measurable academic achievement. Intelligence is often assessed through standardised tests that focus on cognitive speed and accuracy.
(ii) The Indian/Eastern perspective takes a broader and more holistic view. Intelligence is not limited to cognitive abilities but also includes social competence (getting along with others), moral understanding (knowing right from wrong), self-regulation (controlling impulses and emotions), and spiritual consciousness (self-awareness, inner peace).
(iii) Psychologists distinguish these as:
- Technological intelligence — the Western view emphasising cognitive skills, speed, and technical knowledge
- Integral intelligence — the Eastern/Indian view that integrates cognitive, emotional, social, moral, and spiritual dimensions
This distinction highlights that the concept of intelligence is culturally shaped — what is valued as “intelligent” depends on the cultural context.
Q14. (Competency-Based – Application)
A school principal decides to introduce aptitude testing for all students in Class X to guide them in choosing the right stream (Science, Commerce, or Humanities) for Classes XI–XII.
(i) Define aptitude. How is it different from achievement?
(ii) Name one standardised aptitude test that could be used.
(iii) Give two advantages of aptitude testing in career guidance.
(iv) Mention one limitation or concern regarding this approach.
Answer
(i) Aptitude is the potential to learn and succeed in a specific area with appropriate training. It indicates what a person can do in the future.
Achievement, on the other hand, measures what a person has already learned or accomplished. It reflects past learning.
Example: A student may have low marks in Science (low achievement) but high aptitude for scientific reasoning, meaning they could perform well if given proper instruction.
(ii) Differential Aptitude Test (DAT), which measures verbal reasoning, numerical ability, abstract reasoning, mechanical reasoning, spatial relations, and other domain-specific aptitudes.
(iii) Advantages:
- Helps students identify their strengths and areas of potential, enabling them to make informed stream choices
- Reduces the chance of misfit between a student’s abilities and their chosen field, leading to better academic satisfaction and career outcomes
(iv) Limitation: Aptitude tests provide a snapshot of potential at one point in time and may not capture the full range of a student’s abilities. Factors like motivation, interest, socio-economic background, and test anxiety can influence performance. Over-reliance on test scores without considering the student’s own preferences and aspirations may lead to inappropriate guidance.