Stimulus Intensity Effect and Response Latency Effects of Contextual Activity in Conditioning of Voluntary Response

The present experiment is an investigation of the relation between the response latency to CS and the stimulus-intensity effect in the escape learning situation. The hypothesis for the investigation was that the stmulus intensity effect would be more pronounced under the condition of a shorter response latency than that under the condition of a longer one. The UCS used was electrical shock. Both the CS and the testing stimuli were the sounds of the commercial buzzes. The Ss, 40 white rats, were divided into two groups, one of which did the experiment under the condition of 0.3 sec. response latency. The other one, then, was under the respone latency of 1.2 sec. On the training trials, the termination of CS was followed immediately by the UCS onset. The experimental re3ults support the hypothesis mentioned above.