Wechsler's test provided scores on subtests that measured different abilities. the subtests were grouped into two separate categories, which provided an overall and

1) aptitude score; achievement score
2) verbal score; performance score
3) validity score; reliability score
4) mental age; chronological age

2) verbal score , performance score

Explanation:

Wechsler Adult Intelligence Scale (WAIS) is the test that is made by David Wechsler to check cognitive ability and understanding and logical thinking of a person. This Intelligence quotient(IQ) test was specifically made for adults.

This test for distributed into sub-categories of verbal score obtained from verbal IQ and performance score from performance IQ that sums up to make the total score of the test.

Other options are incorrect because aptitude, achievement,accuracy ,mind level, chronology and authenticity is not the sub-divided group that measures the IQ of a person.Thus, the correct option is option(2).

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