"The Pfister Color Pyramid Test was given to evaluate the color preferences of feeble-minded grade school children; it was found that between the ages of six and thirteen there was little variation in... preferences, though a striking preference was noted for red as well as a negative correlation between red and intellectual functioning. Color-form perception measures of juvenile delinquents have consistently shown them to be a color-dominant group. ...[O]ther personality measures of this group... have found the delinquents to be controlled by their impulses and weak in ego strength."