J Exp Anal Behav. 1981 Jul;36(1):61-74. doi: 10.1901/jeab.1981.36-61.
The pigeon's tendency to acquire and maintain signal-directed key pecking under a trace conditioning procedure was parametrically examined. In Experiment 1, the percentage of CS trials with a key peck response was a decreasing function of the trace interval for separate groups of pigeons. The majority of subjects acquired signal-directed key pecking with trace intervals as long as 36 sec. In Experiment 2, differential maintenance of key pecking occurred across trace intervals in a within-subject procedure. Maintenance of key pecking at 36- and 60-sec trace intervals was path dependent in that responding depended on the subject's performance under the preceding trace interval.
鸽子在痕迹条件作用程序下获得和保持信号指导啄键的趋势在参数上进行了检验。在实验 1 中，对于不同鸽子组，具有啄键反应的 CS 试验的百分比是痕迹间隔的递减函数。大多数被试者获得了长达 36 秒的信号指导的啄键反应。在实验 2 中，在被试者内程序中，在不同的痕迹间隔上出现了啄键的差异维持。在 36 秒和 60 秒的痕迹间隔上的啄键维持是路径依赖的，因为反应取决于被试者在前一个痕迹间隔下的表现。
