Smith J P, Attwood J C, Niedorowski L
J Exp Anal Behav. 1982 Jan;37(1):57-63. doi: 10.1901/jeab.1982.37-57.
Food-deprived pigeons were presented with a row of four response keys situated above a grain hopper aperture. At the start of a trial, three of four keys were randomly selected and illuminated white for six seconds. After a variable blackout period, one of the three previously white keys and the previously dark key were illuminated green, and the remaining white keys were reilluminated as before. A response to the green key that was previously white was reinforced with three-second access to gain, a response to any other key resulted in a three-second blackout and the start of a new trial. Five of six subjects responded to the correct green key more often than chance at an interstimulus interval of 1.5 seconds, and they displayed maximal performance at different intertrial interval values ranging from 15 to 60 seconds. Choice accuracy decreased for all but one subject as the interstimulus interval was increased. For the range of interstimulus interval durations employed, decrements in choice accuracy were qualitatively similar to, but lower than those typically obtained from, delayed-matching-to-sample or delayed-pair comparison procedures.
给食物匮乏的鸽子呈现一排位于谷物漏斗孔上方的四个反应键。在一次试验开始时，四个键中的三个被随机选中并白色亮起六秒。经过一段可变的黑屏期后，之前三个白色键中的一个和之前未亮的键变为绿色亮起，其余白色键再次如之前那样亮起。对之前是白色的绿色键做出反应会得到三秒获取谷物的强化，对任何其他键做出反应会导致三秒黑屏并开始新的试验。六只受试鸽子中有五只在1.5秒的刺激间隔下对正确的绿色键做出反应的频率高于随机水平，并且它们在15到60秒的不同试验间隔值下表现出最佳性能。随着刺激间隔增加，除一只受试鸽子外，所有受试鸽子的选择准确性都下降了。在所采用的刺激间隔持续时间范围内，选择准确性的下降在性质上与延迟匹配样本或延迟配对比较程序中通常获得的值相似，但低于这些值。
