Thorndike has classified the personality on the basis of

Concept: Psychologists have classified personality using different criteria — some use physical build and appearance (body-type or somatotype theories), some use social and emotional adjustment, while Thorndike classified personality specifically on the basis of a person's mental faculties, namely thinking power (thought) and imagination power.

Application: For this item, Thorndike's classification of personality rests on thinking and imagination — that is, individuals differ in personality according to the degree of their thinking ability and imaginative ability.

Contrast:

• Physique and appearance is the basis used in body-type (somatotype) theories of personality, such as those of Kretschmer and Sheldon, not Thorndike's classification.

• Creativity and originality is associated with research on the creative personality, a different basis from the one Thorndike used.

• Adjustment and intelligence reflects an adjustment-based view of personality, distinct from Thorndike's thinking-imagination basis.

Therefore, Thorndike's classification of personality is based on thinking and imagination.