The Dimensional Change Card Sort (DCCS) task is a widely used measure of preschoolers' executive function. We combined data for 3,290 3-year-olds from 37 unique studies reporting 130 experimental conditions. Using raw pass/fail counts, we computed the pass rates and chi-squared value for each against chance (50/50) performance. We grouped data…

This paper examines and summarizes the findings of recent research literature on the effects of color versus black and white learning materials on academic achievement in order to determine if the effect of the color variable is significant enough to warrant the added expense of purchasing colored instructional materials for primary school…