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of Dissertation Presented to the Graduate Council of the University of Florida in Partial Fulfillment of the Requirements for the Degree of Doctor of Philosophy THE BEHAVIOR OF PIGEONS UNDER FREE-OPERANT SCHEDULES OF SHOCK AVOIDANCE AND SHOCK FREQUENCY REDUCTION By Dennis Brian Jowaisas June, 1977 Chairman: E. F. Malagodi Major Department: Psychology The importance of the species generality of phenomena, especially for purposes of theoretical interpretations, has been emphasized in recent years. This report provides data which are currently unavailable concerning the acquisition of temporal response gradients during free-operant avoidance and extends the species generality of the theoretically important shock-frequency reduction procedure. Pigeons were exposed to two unsignalled, free-operant shock schedules in which the effective response was a treadle press. Experiment I consisted of long-term exposure to Sidman's free-operant avoidance schedule. The response-shock interval was 20 sec, the shock-shock interval was 5 sec and shock duration was 0.3 sec throughout the experiment. One of the

The behavior of pigeons under free-operant schedules of shock avoidance and shock frequency reduction / by Dennis Brian Jowaisas.