A Delay is a Delay is a Delay

Abstract

Three yoked groups under delay of reward performed similarly during both acquisition and extinction at levels significantly below those of a no-delay group, although convergence occurred during acquisition in all three runway segments with terminal acquisition levels being close in the start box and distant in the goal box. No statistically significant differences obtained among the three delay groups, a contingent-delay group where bar pressing under FR15 was required to fill the delay, and two noncontingent groups, one with an orienting stimulus during the delay and one without.