Responses of Comparable White and Negro Adults to the Rorschach Test

Five groups of 20 Ss each, ranging from seven years to college age, were asked to solve a series of problems involving change-making and coin equivalences. Results indicated that the number of Ss able to make change without the use of written calculations increased as a consequence of chronological age, with the greatest increase occurring between 11 and 13 years of age. In addition, it was found that although children at all levels knew the various coin equivalences, younger children used primarily dimes and pennies in making change, whereas older children used all of the coins available. This was interpreted to mean that coin equivalences are probably learned as specific stimulus-response pairs, and that in making change younger children use untransformed base 10 units, such as pennies and dimes, largely because the computational demands placed by change-making operations force them to minimize the number of noncomputational transformations used.