Intelligence & Its Multi-Dimensional View • Topic 1 of 5

Concept & Critique of IQ

Intelligence is broadly the capacity to learn from experience, reason, solve problems and adapt to new situations. The first practical attempt to measure it came from Alfred Binet in France (1905), who, with Theodore Simon, built a test to identify children needing extra help and introduced the idea of mental age (MA) — the age level at which a child is actually performing. William Stern then proposed the intelligence quotient, and Lewis Terman of Stanford popularised the formula in the Stanford-Binet test: IQ = (Mental Age / Chronological Age) x 100. A child of CA 8 performing like a 10-year-old has IQ = 10/8 x 100 = 125. The trouble — and this is what CTET tests — is the single-number, unitary view it created. Critics argue intelligence is not one fixed quantity: a single score hides a child's specific strengths, ignores creativity, emotional and practical skills, and tempts teachers to label children permanently as 'bright' or 'dull'. Crucially, traditional IQ tests carry cultural bias — they are built around the language, knowledge and assumptions of one (usually urban, middle-class) culture, so a child from a different background or language can score low without being any less able. CTET wants you to treat IQ as one limited, culturally loaded indicator, not the whole of a child's mind.

✅ Solved examples

1. A child has a chronological age of 8 years and a mental age of 10 years. What is the IQ?
IQ = (MA / CA) x 100 = (10 / 8) x 100 = 125. The mental age exceeds the chronological age, so the child scores above average.
2. Who developed the first practical intelligence test and introduced the concept of mental age?
Alfred Binet (with Theodore Simon), in France in 1905, to identify children who needed additional educational support.
3. A standard intelligence test designed in English around urban, middle-class experiences is given to a rural child whose first language is different, and the child scores low. The main problem with this conclusion is:
Cultural and linguistic bias of the test. The low score reflects the mismatch between the test and the child's background and language, not a true lack of ability.
4. Why do many psychologists criticise reducing a child's intelligence to a single IQ number?
Because it treats intelligence as one fixed, unitary quantity, hides specific strengths and weaknesses, ignores creativity, emotional and practical abilities, and encourages permanent labelling of children as bright or dull.

✏️ Practice — try these, take hints as needed

1. A child with chronological age 10 years has a mental age of 8 years. What is the IQ?
Use IQ = MA/CA x 100.
8 divided by 10, times 100.
80
2. The "x 100" formula for IQ as a ratio of mental age to chronological age is most associated with which psychologist?
Popularised it in the Stanford-Binet test.
Worked at Stanford University.
Lewis Terman (formula originally proposed by William Stern)
3. When a test favours children from the culture it was built in and disadvantages others, the test is said to have:
Not a fair measure across groups.
Linked to language and background.
Cultural (cultural/linguistic) bias
4. The age level at which a child is actually performing on an intelligence test is called the child's:
Binet's key idea.
Compared against chronological age in the IQ formula.
Mental age
5. Treating intelligence as one single, fixed quantity captured by one score is known as the ______ view of intelligence, which modern theories reject.
Opposite of multi-dimensional.
One number for everything.
Unitary / single-factor view

📝 Topic test — 8 questions

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Gardner's Theory of Multiple Intelligences →