Question

Distinguish between non-verbal and performance tests of intelligence.

Answer 1

Sr. No.		Non-verbal tests of intelligence	Performance tests of intelligence
1.	Nature of items	Non-verbal tests use pictures, figures or illustrations as test items. The person usually has to look at visual patterns and choose the correct option (e.g., Raven’s Progressive Matrices).	Performance tests require the person to handle or manipulate physical objects and materials to complete a task (e.g., arranging blocks in Koh’s Block Design Test).
2.	Type of response	In non-verbal tests, the response is mainly pointing to or marking the correct figure; no manipulation of objects is required.	In performance tests, the response involves actual doing – arranging, assembling or constructing something.
3.	Skills involved	Non-verbal tests primarily tap visual-analytical and reasoning skills without using language.	Performance tests tap visuo-motor coordination, speed and practical problem-solving through actions.