Schedule-induced wheel-running: effects of exposure to the schedule.

摘要: Rats were given access to a running wheel from chamber where milk was delivered according fixed-time 1-min schedule. For most animals the effect of schedule decrease wheel-running rate below that during massed reinforcement control sessions. With further exposure tended increase and well-defined temporal pattern developed. Subsequent condition caused an initial then, in cases, decline rate. Re-exposure increased rates three out four subjects developed more rapidly. Judgement as whether particular behavior is schedule-induced or not can only be reliably made when there strong evidence overall are stable. Wheel-running appears under some experimental conditions.