The Open Field Test was used to assess variables that might not be manifested in a more standard testing situation. In this test, the child was shown 10 standard play objects in the room, and was told to do anything he wished with the toys. The tester initiated no interaction with the child and responded minimally to any overture made by the…

The Motor Inhibition Test, which measures "impulse control," requires the child to perform three motor acts. These acts are: walking a distance of six feet on a five-ince wide runway; drawing a line, using ruler and pencil, between two points 8-1/2 inches apart; and winding a toy jeep up to the rear of a toy two truck, a distance of 30…

The Matching Familiar Figures Test is a measure of the response style "reflection-impulsivity." The version of the test used in the longitudinal study test battery consists of two practice and 18 test items. On each item, the child is shown one standard and four comparison figures. Figures are simple line drawings done in black on a…