Several variables of the model, sex, social class, and presence or. absence of reínforcement, were studied in two sítuatíons, one of voluntary imitation and the other one of imitative learníng, The Ss were upper middle class children. The results indicated that voluntary imita" tion is influenced by the social class of the model, and by the ínteractíonof social class and sex of the modelo In imitative learning, on thie othen hand, it was found an interaction between sex, social class, and reinforcing properties of the modeI. Results were discussed in the light of prevíous research en ímitation, induding Latín American investigations
