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 Construct Validity When constructing a test, for whatever purpose, the question of test validity needs to be addressed. Test validity asks to what extent does the assessment tool being used truly measure what it purports to measure (known as construct validity in testing jargon). Take for example the classic I.Q test in the 1960s. These tests often found to be “invalid”, because they weren’t really measuring intelligence as they claimed to do, but rather, they were testing reading skills under time constraints.The test often failed to spot intelligent children who may have simply possessed poor reading skills due to poor training, lack of practice, motivation, dyslexia, etc. In time, the development of I.Q. tests changed and included, as well as reading, oral questions and responses, drawings, visual recognition, tactile exercises, and discussions. Train the Trainer Program Criterion Validity But the story continues. Researchers found that even though tests could be constructe...