Theories of Intelligence

Overview

Intelligence is one of the most frequently tested concepts in Child Development and Teaching Methods for JTET. Understanding different theories helps teachers recognise that children possess varied intellectual abilities—not just academic smartness. This directly impacts how you design lessons, assess learners, and support diverse classrooms.

For JTET, you must know four major theorists: Spearman (two-factor theory), Thorndike (multifactor theory), Thurstone (primary mental abilities), and Gardner (multiple intelligences). Questions typically ask you to match theorists with their theories, identify the number and names of factors/intelligences, or apply these ideas to classroom scenarios. Mastering this topic also helps you answer questions on individual differences and inclusive education.

Key Concepts

• **Intelligence is not a single ability**: Modern theories reject the idea that intelligence is one general capacity. Instead, intelligence comprises multiple distinct abilities that vary across individuals.

• **Spearman's Two-Factor Theory (1904)**: Intelligence has two components—'g' factor (general intelligence) common to all mental tasks, and 's' factors (specific abilities) unique to particular tasks. Strong 'g' means overall cognitive competence.

• **Thorndike's Multifactor Theory (1920s)**: Intelligence is a combination of numerous independent abilities with no general factor. He identified three broad types: abstract (verbal-mathematical), mechanical (handling objects), and social (dealing with people).

• **Thurstone's Primary Mental Abilities (1938)**: Intelligence consists of seven distinct, relatively independent abilities. He rejected a dominant 'g' factor and used factor analysis to identify these seven.

• **Gardner's Multiple Intelligences (1983)**: Intelligence is not a single entity but eight (originally seven) distinct intelligences. Each person has a unique profile—strength in one area does not predict strength in another.

• **Educational implication**: Teachers must provide varied learning experiences because a child weak in linguistic intelligence may excel in spatial or bodily-kinesthetic tasks.

• **Nature vs measurement**: Spearman and Thurstone relied heavily on psychometric testing, while Gardner emphasised observation of real-world problem-solving and cultural contributions.

Formulas / Key Facts

| Theorist | Theory Name | Key Components | |----------|-------------|----------------| | Spearman | Two-Factor Theory | 'g' factor (general) + 's' factors (specific) | | Thorndike | Multifactor Theory | Abstract, Mechanical, Social intelligence | | Thurstone | Primary Mental Abilities | 7 abilities: Verbal, Word Fluency, Number, Spatial, Memory, Perceptual Speed, Reasoning | | Gardner | Multiple Intelligences | 8 intelligences (originally 7) |

**Thurstone's Seven Primary Mental Abilities (remember: VWNSMPR)** 1. **V**erbal Comprehension – understanding words and meanings 2. **W**ord Fluency – rapid production of words 3. **N**umber – arithmetic calculations 4. **S**patial – visualising objects in space 5. **M**emory – recall of information 6. **P**erceptual Speed – quick recognition of details 7. **R**easoning (Inductive) – finding rules and patterns

**Gardner's Eight Multiple Intelligences (remember: LMSVBNIN)** 1. **L**inguistic – language and words 2. **L**ogical-Mathematical – numbers and reasoning 3. **S**patial – visual-spatial thinking 4. **M**usical – rhythm and melody 5. **B**odily-Kinesthetic – body movement and coordination 6. **I**nterpersonal – understanding others 7. **I**ntrapersonal – understanding self 8. **N**aturalistic – recognising patterns in nature (added later)

Worked Examples

**Example 1: Theory Identification** *Question*: A psychologist believes that a student who scores high on a verbal test will also score reasonably well on a numerical test because of an underlying common factor. Whose theory does this reflect?

*Solution*:

• The statement mentions a "common factor" affecting performance across different tests.
• This is Spearman's 'g' factor—general intelligence that influences all cognitive tasks.
• **Answer**: Spearman's Two-Factor Theory.

**Example 2: Classroom Application** *Question*: A teacher notices that a student struggles with reading but excels in drawing maps and assembling models. According to Gardner, which intelligences are involved?

*Solution*:

• Struggles with reading → lower Linguistic intelligence
• Excels in drawing maps → high Spatial intelligence
• Assembling models → high Bodily-Kinesthetic intelligence
• **Answer**: The student has strong Spatial and Bodily-Kinesthetic intelligences but lower Linguistic intelligence.

**Example 3: Matching** *Question*: Match the theorist with the number of factors/intelligences: (a) Thurstone (b) Gardner (c) Spearman

Options: (i) 2 factors (ii) 7 abilities (iii) 8 intelligences

*Solution*:

• Spearman proposed 2 factors ('g' + 's') → (c)-(i)
• Thurstone proposed 7 primary mental abilities → (a)-(ii)
• Gardner proposed 8 multiple intelligences → (b)-(iii)

Common Mistakes

• **Confusing Spearman with Thurstone**: Students often mix up the two. Remember—Spearman emphasised ONE general factor ('g'), while Thurstone rejected 'g' and proposed SEVEN independent abilities.

• **Forgetting the 8th intelligence of Gardner**: Gardner originally proposed 7 intelligences. Naturalistic was added later. JTET may test whether you know all 8.

• **Thinking Thorndike and Thurstone are the same**: Their names sound similar, but Thorndike proposed three types (abstract, mechanical, social), while Thurstone proposed seven primary abilities using factor analysis.

• **Assuming IQ tests measure all intelligences**: Traditional IQ tests primarily measure Spearman's 'g' or Thurstone's verbal-numerical abilities. They do not capture Gardner's musical, bodily-kinesthetic, or interpersonal intelligences.

• **Ignoring educational implications**: JTET often asks how a theory applies in the classroom. Gardner's theory especially supports differentiated instruction—don't just memorise names; understand how to use varied teaching strategies.

Quick Reference

• **Spearman**: 'g' (general) + 's' (specific) = Two-Factor Theory
• **Thorndike**: Abstract + Mechanical + Social = Multifactor Theory
• **Thurstone**: 7 Primary Mental Abilities (VWNSMPR)
• **Gardner**: 8 Multiple Intelligences (Linguistic, Logical-Mathematical, Spatial, Musical, Bodily-Kinesthetic, Interpersonal, Intrapersonal, Naturalistic)
• **Classroom takeaway**: No child is "unintelligent"—each has a unique intelligence profile; teach through multiple modalities
• **Factor analysis**: Statistical method used by Spearman and Thurstone to identify underlying factors of intelligence