Peak shift: A review.

Reviews the peak-shift literature in relation to operant and classical conditioning procedures, errorless discrimination training, and physiological studies. Results indicate that peak shift is a reliable behavioral phenomenon affected by stimulus dimension, positive-negative stimulus separation, training procedure, and testing procedure. There are many concepts (e.g., inhibition and excitation), behavioral phenomena (e.g., behavioral contrast and negative peak shift), and experimental procedures (e.g., reinforcement density-frequency, successive training, and simultaneous training) interwoven throughout the peak-shift literature. Many questions have been raised regarding these aspects of peak shift yet few questions have been answered to date. (96 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)