alleryWhich concept did the 1908 Binet-Simon revision introduce?
AIntelligence quotient
BNormal curve idea
CFactor analysis
DMental age concept
Answer & Solution
Correct answer: D. Mental age concept
1. Recall the fact: The 1908 revision gave the concept of mental age.
2. The option "Mental age concept" matches it.
3. Why the others fail: IQ came in 1912 from William Stern.
4. Check the stem wording against the fact: only one option satisfies both.
_Source: NCERT Class XII Psychology, Ch 1 Variations in Psychological Attributes (lepy101.pdf), "Assessment of Intelligence"_
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