Kraemer P J, Brown R W, Randall C K
Department of Psychology, University of Kentucky, Lexington KY 40506-044, USA.
Behav Processes. 1995 Sep;34(3):265-8. doi: 10.1016/0376-6357(95)00003-d.
Rats were trained on a short (2-second) versus long (10-second) duration discrimination. The duration of an overhead light signaled which of two lever-press responses, left or right, would produce food reinforcement. After the rats had acquired the discrimination, probe tests were presented in which the light varied in intensity (bright or dim) and duration (values between 2 and 10 seconds). The results indicated that rats judged a bright light to be longer than a dim light of equal duration. Signal intensity has been shown to affect timing in humans and pigeons. The present results therefore extend the comparative generality of the effect to include rats as well.
对大鼠进行了短（2秒）与长（10秒）时长辨别训练。头顶灯光的时长表明左右两个杠杆按压反应中哪一个会产生食物强化。在大鼠学会辨别之后，进行了探测测试，其中灯光在强度（亮或暗）和时长（2至10秒之间的值）方面有所变化。结果表明，大鼠判断同等时长下亮灯比暗灯持续时间更长。信号强度已被证明会影响人类和鸽子的时间判断。因此，目前的结果将这种效应的比较普遍性扩展到了大鼠。
