Originally published in 1988, the purpose of this title was to present a coherent summary of
the previous 30 years' of research on the way in which animals and humans distribute their …

Recent research on multiple schedule interactions is reviewed. Contrary to formulations that
view contrast as the result of elicited behavior controlled by the stimulus‐reinforcer …

Incentive Relativity summarizes the early history of research on the effects of reward
magnitude on animal behaviour, emphasizing those studies that led to recognition that …

Every day at about 4: 30, Jazz, a Hungarian Vizsla dog, leaps up on the sofa and looks out
for his owner who always comes home at 5: 00. He doesn't need an internal clock because …

We propose that a fundamental unit of behavior is the concurrent discriminated operant, and
we discuss in detail a quantitative model of the concurrent three‐term contingency that is …

A detection-theory model to describe the effects of varying stimulus disparity on switching-
key concurrent variable-interval schedule performance (Miller, Saunders, & Bourland, 1980) …

The original and power function versions of the matching law and matching theory are
mathematical accounts of continuous choice that have been applied to the behavior of many …

We present a new model of remembering in the context of conditional discrimination. For
procedures such as delayed matching to sample, the effect of the sample stimuli at the time …

Three experiments using multiple schedules of reinforcement explored the implications of
resistance‐to‐change findings for the response‐reinforcer relation described by the law of …

In Experiment 1, 5 pigeons were trained to peck a key on multiple schedules of food
reinforcement. The reinforcer rate was constant in 1 component and varied between …