This was the first instrument to test non-verbal IQ in preschool and older-children populations.

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The Goodenough Scale or the Goodenough-Harris Drawing Test was the first instrument to test non-verbal IQ in preschool and older-children populations. It was developed by Florence Goodenough in 1926 and later revised by Dale Harris in 1963. The test involves asking the child to draw a person and then scoring the drawing based on various criteria to yield an estimate of the child's cognitive ability.

This Was the First Instrument to Test Non-Verbal IQ in Preschool