Question

Who explained seven primary mental abilities

• A. Thorndike
• B. Spearman
• C. Guilford
• D. Thurston

Answer 1

Answer:

D. Thurston

Thurston 's group factor theory of intelligence

• The theory also known as Theory of primary mental abilities / multiple factor theory of intelligence / Factor analysis theory of intelligence

• Louis Thurston came out with the group factor theory (1937) saying that Intelligence is a cluster of abilities

• These mental operations then constitute a group

• Each of them has its own primary factor

• Each of these primary factors is said to be relatively independent of others

• He pointed out that there were Seven Primary Mental Abilities and later on added two more.

• Seven Primary Mental Abilities

1. Verbal comprehension Factor

2. Verbal fluency Factor

3. Numerical Factor

4. Perceptual speed Factor

5. Inductive reasoning Factor

6. Spatial visualization Factor

7. Memory Factor

   • Later add

   1. Deductive Reasoning (P)

   2. Problem solving ability factor (PS)