Locurto Charles
College of Holy Cross, Worcester, MA 01610, USA.
J Comp Psychol. 2005 Nov;119(4):387-93. doi: 10.1037/0735-7036.119.4.387.
Previous research (C. Locurto, C. Emidy, & S. Hannan, 2002) indicated that mice quickly learned a water-escape task under a win-shift contingency but did not exceed chance-level performance under a win-stay contingency. We examined the robustness of this conclusion in two experiments by varying procedural and temporal aspects of that earlier experiment. Results of both experiments indicated that the preference for win-shift learning in mice under water-escape motivation could not be attributed to procedural or design features of that earlier study and were independent of the influence of intertrial interval, normally a variable that produces strong effects on learning. In neither experiment did subjects exposed to a win-stay contingency perform at above-chance levels.
先前的研究（C. 洛库尔托、C. 埃米迪和S. 汉南，2002年）表明，小鼠在赢则转换的条件下能快速学会水逃逸任务，但在赢则停留的条件下其表现未超过随机水平。我们通过改变早期实验的程序和时间方面，在两项实验中检验了这一结论的稳健性。两项实验的结果均表明，在水逃逸动机下小鼠对赢则转换学习的偏好不能归因于早期研究的程序或设计特征，并且不受通常对学习有强烈影响的试验间隔的影响。在两项实验中，面临赢则停留条件的受试者的表现均未高于随机水平。
