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Intelligence and Ability

ICSE · Class 12 · Psychology

Quick revision notes for Intelligence and Ability — ICSE Class 12 Psychology. Key concepts, formulas, and definitions for last-minute revision.

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Key Topics to Revise

1

Intelligence — Meaning and Nature

  • The word 'intelligence' is derived from the Latin word 'intelligere' meaning 'to comprehend or perceive'.
  • David Wechsler's comprehensive definition: 'Intelligence is the global capacity of a person to act purposefully, to think rationally, and to deal effectively with his environment.'
  • Terman emphasised intelligence as the 'ability to think'; Thorndike stressed the 'ability to learn'.
2

Classical Theories of Intelligence

  • Classical theories attempt to discover the components or elements of intelligence.
  • SPEARMAN'S TWO FACTOR THEORY (1904): Intelligence = g (General factor) + s (Specific factors). The 'g' factor is common to all intellectual tasks; 's' factors are task-specific. Formula: Intelligence
  • THURSTONE'S MULTI-FACTOR THEORY (1930s): Intelligence is a combination of several Primary Mental Abilities (PMA). Nine PMAs: Numerical (N), Verbal (V), Spatial Visualisation (S), Memory (M), Inductive
3

Modern Theories of Intelligence

  • Modern theories focus on the PROCESSES or PATTERNS of thinking rather than just identifying components of intelligence.
  • They view intelligence as a cognitive process and examine how these processes change as individuals mature.
  • INFORMATION PROCESSING APPROACH: Intelligence viewed as a process. Mind compared to a computer analysing received information. John McCarthy (US computer engineer) introduced the term 'Artificial Inte
4

Measurement of Intelligence — Classification of Tests and IQ

  • Intelligence tests are designed to determine the relative mental capacity of a person through statistical measurement.
  • CLASSIFICATION BASED ON NATURE OF TASKS: (1) Verbal/Language-based tests — questioning and answering based on language (e.g., Binet-Simon Test, Army Alpha Test); (2) Performance/Non-verbal tests — man
  • CLASSIFICATION BASED ON ADMINISTRATION: (1) Individual tests — administered to one person at a time; requires one-on-one consultation (e.g., WAIS, Alexander Pass Along Test); (2) Group tests — adminis

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Key Concepts

Intelligence is a global cognitive capacityCharles Spearman (1904) proposed that intelligenceLRaymond Cattell distinguished two typesJ

Frequently Asked Questions

What are the important topics in Intelligence and Ability for ICSE Class 12 Psychology?
Key topics in Intelligence and Ability include Overview of Intelligence and Ability — Chapter Mind Map, Chapter Overview: Intelligence and Ability — Complete Mind Map, Intelligence and Ability - Full Chapter Concept Map. These are the concepts ICSE Class 12 examiners draw on most — study them first, then practise related questions.
How to score full marks in Intelligence and Ability — ICSE Class 12 Psychology?
Start by understanding all key concepts. Practise previous year questions from this chapter. Revise formulas and definitions regularly. Use flashcards for quick revision before the exam.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

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