Comer T R, Means L W
Department of Psychology, East Carolina University, Greenville, North Carolina 27858.
Behav Neural Biol. 1989 Sep;52(2):239-50. doi: 10.1016/s0163-1047(89)90355-5.
Previous research has demonstrated that perseveration in escape situations is an unlearned response bias of rats and mice which is difficult to overcome. In Experiment I, Sprague-Dawley rats were trained to a criterion of nine correct choices in 10 consecutive trials in a win-stay working memory water-escape task wherein an escape platform was hidden in one of two compartments. Subjects were given a forced choice on an Information Trial followed by a free choice on a Test Trial 5 min later. Subjects who were given a 30-s forced swim in the incorrect section following errors on the Test Trial showed faster acquisition and less use of response perseveration than control subjects. In Experiment II, the delayed escape procedure was used to compare acquisition of win-stay and win-shift strategies. Contrary to previous research both groups learned the tasks, although the win-stay group showed better performance. It is concluded that unlearned response biases of perseverating and returning to previous escape sites can be overcome if experimental conditions are appropriately arranged.
先前的研究表明，在逃避情境中的固着行为是大鼠和小鼠的一种先天反应偏向，难以克服。在实验I中，将斯普拉格-道利大鼠训练至在一个赢则停留工作记忆水逃避任务中连续10次试验中有9次正确选择的标准，在该任务中，一个逃避平台隐藏在两个隔室之一中。在信息试验中给受试者一个强制选择，5分钟后在测试试验中给一个自由选择。在测试试验中出错后在错误部分进行30秒强制游泳的受试者比对照组受试者表现出更快的习得速度和更少地使用反应固着。在实验II中，使用延迟逃避程序来比较赢则停留和赢则转换策略的习得情况。与先前的研究相反，两组都学会了任务，尽管赢则停留组表现更好。得出的结论是，如果实验条件安排得当，固着于并返回先前逃避地点的先天反应偏向是可以克服的。
