A psychology club in Pune studied the test scores of 200 students. Students who did well on one test usually did fairly well on the others, though Tanvi, a gifted singer, stood far above everyone in one special skill. Rohan memorised a list of historical dates and repeated them exactly, but could not use them to explain events. Sana took the same dates and worked out the causes behind the events. The club also found that scores on several separate abilities were largely unrelated to one another. Finally, the members drew a timeline of the main psychometric theories of intelligence.
The theory that best explains why students who did well on one test usually did fairly well on the others was proposed in which year?
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → 1927
Doing fairly well on all tests points to a general factor (g-factor) common to all performances, which Charles Spearman proposed in his two-factor theory in 1927.
NCERT (2026-27): “THEORIES OF INTELLIGENCE … |