Manipulation of the Magnitude of Incentive Variable and Runway Performance

The purpose of the present study was an attempt to replicate the findings of Wolfe and Kaplon (1941) using rats and somewhat more precise measurements of the dependent variables. Both the former study and Dyal's work indicate that specification of the amount of reward in terms of the weight of the food is insufficient. Specifically, the effect of presenting the same amount of food in one unit as against presenting it in five units was investigated.