Which of the following tests is NOT a part of Bhatia's battery of performance…

Concept: A performance test of intelligence measures mental ability through doing — drawing, arranging, assembling, recalling — instead of through reading or speaking, so it can be administered to a person who is illiterate or who does not share the examiner's language. India's standard instrument of this kind is Bhatia's Battery of Performance Tests of Intelligence, constructed by C. M. Bhatia in 1955 and standardised on Indian boys aged 11 to 16, with separate norms for literate and illiterate examinees.

The battery is a closed set of exactly five sub-tests, and that fixed membership is what this question turns on:

• Koh's Block Design Test

• Alexander's Pass Along Test

• Pattern Drawing Test

• Immediate Memory Test (for digits and sentences)

• Picture Construction Test

Application: Check each test named in the question against that closed set of five.

1. Pattern drawing test — the examinee reproduces graded geometric designs in a single unbroken pencil stroke, without lifting the pencil and without retracing a line. It is on the list of five.

2. Alexander's pass along test — coloured blocks are slid inside a shallow tray, never lifted out, until the two colours occupy the two ends in the required arrangement; Bhatia adopted this task from W. P. Alexander. It is on the list of five.

3. Picture construction test — cut cards are arranged into a meaningful picture over plates of increasing difficulty. It is on the list of five.

4. Object assembly test — cut-up pieces of a familiar object are fitted together into the complete figure. This task is a sub-test of the Wechsler performance scale (as used in the WISC and in the WAIS up to its third edition) and is absent from Bhatia’s five.

Hence the test that is NOT part of Bhatia’s battery of performance tests is the object assembly test.

Cross-check: Complete the set to be certain. Of the five Bhatia sub-tests, the two this question does not name are Koh’s Block Design Test and the Immediate Memory Test. Those two, together with the pattern-drawing, pass-along and picture-construction tasks, fill all five places in the battery — leaving no slot for an object-assembly task.

Contrast: Where each named test actually comes from.