Wechsler's intelligence test (the wais) was specifically designed to test rather than

Wechsler’s intelligence test is likely to be designed to test the adults in compared to children as this type of test focuses more on the adults as a way of measuring the adults’ intelligence and their ability as well as this also focuses on older adolescents. 

is this supposed to be a question

productive most commonly means: achieving or producing a significant amount or result.

explanation:

productive can also mean:

these depend on how the word productive is used. most likely productive will mean   achieving or producing a significant amount or result.