Kelly R, Grant D S
Legal Services Society of British Columbia, 1500-1140 W. Pender Street, Vancouver, British Columbia, Canada V6E 4G1.
Q J Exp Psychol B. 2001 Feb;54(1):69-79. doi: 10.1080/02724990042000047.
The differential outcomes effect (DOE) pertains to enhanced conditional discrimination performance if each correct stimulus-choice sequence is always followed by a different outcome (e.g., food vs. water) compared to when each correct sequence is followed equally often by either outcome. The present experiments sought evidence of a DOE in pigeons, using biologically neutral outcomes. Experiment 1 replicated findings with rats demonstrating that a DOE can occur when one outcome is a biologically neutral light and the other is the absence of that light. Experiment 2 extended these findings by demonstrating a DOE when two biologically neutral outcomes of similar sensory and associative properties were employed.
差异结果效应(DOE)是指,如果每个正确的刺激-选择序列之后总是伴随着不同的结果(例如,食物与水),相比于每个正确序列之后两种结果出现的频率相同的情况,条件辨别性能会得到增强。本实验使用生物学上中性的结果,旨在寻找鸽子身上存在差异结果效应的证据。实验1重复了在大鼠身上的发现,即当一种结果是生物学上中性的光而另一种结果是该光的缺失时,差异结果效应可能会出现。实验2扩展了这些发现,证明当采用两种具有相似感官和联想属性的生物学上中性的结果时,也会出现差异结果效应。