The food-motivated performances of rhesus, stumptail, and cynomolgus macaques were compared using an intra-session progressive fixed-ratio technique. During each test session, the number of panel-presses required for reinforcement was progressively increased until each animal failed to meet a performance criterion. The number of reinforcements obtained by each animal and its speed of responding were measured. The results indicated that, when an easily learned instrumental task involves progressively increasing effort to obtain food, the three species of macaques tested do not perform in a significantly different manner.
Get full access to this article
View all access options for this article.
References
1.
AmselA.The effect upon level of consummatory response of the addition of anxiety to a motivational complex. J. exp. Psychol., 1950, 40, 709–715.
2.
KlingA.OrbachJ.Plasma 17-hydroxycorticosteroid levels in the stump-tailed and two other macaques. Psychol. Rep., 1963, 13, 863–865.
3.
SchrierA. M.Pretraining performance of three species of macaque monkeys. Psychon. Sci., 1965, 3, 517–518.
4.
SchrierA. M.Learning-set formation by three species of macaque monkeys. J. comp. physiol. Psychol., 1966, 61, 490–495.
5.
SymmesD.AndersonK. V.Comparative observations on Macaca speciosa and Macaca mulatta as laboratory subjects. Psychon. Sci., 1967, 7, 89–90.
