Theories of Intelligence is a foundational topic in Child Development and Pedagogy for TN TET. Questions from this area test your understanding of how psychologists have conceptualised intelligence—from viewing it as a single general ability to recognising multiple distinct capacities. This directly impacts classroom practice: if intelligence is multidimensional, teachers must use varied strategies to reach all learners.
For the exam, you must know the key theorists (Spearman, Thurstone, Gardner), their core ideas, and how these theories apply to educational settings. Expect 2–4 questions that ask you to identify a theory from its description, match theorists with their concepts, or apply a theory to a classroom scenario. Mastery here also supports your understanding of inclusive education and differentiated instruction.
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Key Concepts
**Intelligence is not a single, fixed trait**—psychologists debate whether it is one general ability or many separate abilities. This debate shapes how we assess and teach children.
**Spearman's Two-Factor Theory** proposes that all cognitive tasks share a common "g-factor" (general intelligence), plus task-specific "s-factors." High g-factor predicts success across subjects.
**Thurstone's Primary Mental Abilities** rejects a dominant g-factor. Instead, intelligence comprises 7 independent abilities (verbal, numerical, spatial, etc.) that vary across individuals.
**Gardner's Multiple Intelligences** expands the concept further—intelligence includes at least 8 distinct types (linguistic, logical-mathematical, musical, etc.), each relatively independent.
**Educational implication**: If intelligence is multidimensional, standardised IQ tests capture only part of a child's potential. Teachers should use diverse methods to identify and nurture different abilities.
**No single theory is "correct"**—each offers a lens. Spearman explains why some children excel broadly; Thurstone and Gardner explain why some excel in specific domains.
**Nature vs Nurture**: All theories acknowledge both hereditary and environmental influences on intelligence development.
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Formulas / Key Facts
| Theorist | Theory Name | Core Idea | Key Terms | |----------|-------------|-----------|-----------| | **Charles Spearman** (1904) | Two-Factor Theory | Intelligence = g-factor + s-factors | g = general intelligence; s = specific abilities | | **Louis Thurstone** (1938) | Primary Mental Abilities (PMA) | 7 independent abilities, no dominant g | V, N, S, W, M, P, R (see below) | | **Howard Gardner** (1983) | Multiple Intelligences (MI) | 8+ distinct intelligences | Linguistic, Logical-Mathematical, Spatial, Musical, Bodily-Kinesthetic, Interpersonal, Intrapersonal, Naturalistic |
**Question:** A psychologist believes that a student who scores high in mathematics will also likely score high in language because both depend on a common underlying ability. Which theory does this reflect?
**Solution:**
The idea of a "common underlying ability" affecting performance across domains points to a **general factor (g)**.
This is **Spearman's Two-Factor Theory**.
Answer: **Spearman**
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### Example 2: Classroom Application
**Question:** A teacher notices that Ravi struggles with written tests but excels when asked to build models or perform experiments. Using Gardner's theory, how should the teacher address this?
**Solution:**
Gardner's MI theory recognises **Bodily-Kinesthetic intelligence** (learning through physical activity and hands-on work).
Ravi may have high bodily-kinesthetic intelligence but lower linguistic intelligence (needed for written tests).
**Teacher's action:** Provide alternative assessments—oral presentations, model-making, lab work—to let Ravi demonstrate understanding through his strength.
This aligns with **differentiated instruction** based on MI theory.
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### Example 3: Distinguishing Thurstone from Spearman
**Question:** Meena scores very high in verbal tasks but average in numerical tasks. Which theory better explains this pattern—Spearman or Thurstone?
**Solution:**
Spearman's theory would predict that high g-factor leads to high performance across all cognitive tasks.
Meena's **uneven profile** (high verbal, average numerical) fits **Thurstone's PMA theory**, which holds that abilities are independent.
Answer: **Thurstone's Primary Mental Abilities**
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Common Mistakes
| Wrong Thinking | Correct Understanding | |----------------|----------------------| | "Spearman said intelligence is only one thing (g-factor)." | Spearman proposed **two factors**: g (general) **plus** s (specific). He acknowledged specific abilities exist alongside the general factor. | | "Gardner's MI is scientifically proven and replaces IQ testing." | MI theory is influential but **not universally accepted** in psychometrics. It is a **framework for teaching**, not a replacement for standardised assessment. | | "Thurstone completely rejected general intelligence." | Thurstone downplayed g but later research showed his 7 abilities do correlate, suggesting **some** general factor exists. He emphasised that specific abilities are more important for practical purposes. | | "Bodily-Kinesthetic intelligence means the child is not academically intelligent." | MI theory holds all intelligences are **equally valid**. A child strong in bodily-kinesthetic learning can master academic content through movement-based methods. | | "IQ tests measure all types of intelligence." | Traditional IQ tests primarily measure **verbal and logical-mathematical** abilities. They miss musical, interpersonal, bodily-kinesthetic and other intelligences. |
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Quick Reference
1. **Spearman = g + s** (general intelligence underlies all tasks; specific abilities add on top).
4. **Classroom implication of MI**: Use varied teaching methods—stories, logic puzzles, music, group work, self-reflection, nature walks—to reach all learners.
5. **Exam tip**: If a question mentions "g-factor," think Spearman. If it lists 7 abilities, think Thurstone. If it talks about multiple independent intelligences in a classroom context, think Gardner.
6. **All three theories inform inclusive education**—recognising diverse abilities helps teachers avoid labelling children as "less intelligent" when they simply learn differently.
👥 Study this together
Invite your prep group — read the same notes, then discuss doubts in this topic's shared room.