Abstract
Self-punitive behavior was demonstrated in prepunishment speeds during extinction following shock escape training in a straight runway under buzzer-CS and under no-CS conditions. The buzzer enhanced punished running (shock in the last half of the runway) and nonpunished running. The buzzer did not significantly enhance self-punitive behavior, defined as the difference between punishment conditions with faster running for punished rats than for nonpunished rats. Introduction of a novel buzzer at the beginning of extinction enhanced both punished and nonpunished running relative to no-CS conditions but had no effect on selfpunitive behavior. Discontinuance of the buzzer CS at the end of acquisition eliminated selfpunitive behavior during extinction. The results were interpreted as supporting explanations of self-punitive behavior in terms of fear conditioning and conflict resolution.
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