Response rates of monkeys (Macaca Mulatta) under varying conditions of sucrose reinforcement.

Abstract

Concentrations of sucrose solution ranging from 10 to 50% and volumes ranging from 0.22 to 0.83 cc were used to reinforce lever pressing by rhesus monkeys. Ss repeatedly received all concentrations in both an ascending and descending order. The form of the rate-concentration function depended on a number of variables, inclduing frequency of reinforcement, volume per reinforcement, and order of presenting the concentrations. In general, the functional relationships were similar to those found when rats are Ss.