Manabe K, Kawashima T
Shinrigaku Kenkyu. 1982 Dec;53(5):304-7.
The effects of change-over-delay (COD) in discrimination training using the signal-key procedure were investigated in the pigeon. In Experiment I, generalization gradients along the line-tilt dimension following the signal-key procedure with and without COD 2 s were studied. Regardless of the application of COD, following results were obtained: (1) Relative generalization gradients were similar. (2) No behavioral contrast was observed on the operant-key. (3) Some responding to the signal-key occurred during the VI component of the multiple VI EXT schedule. The responses on the signal-key decreased slightly with COD 2 s. These data suggest that the responses on the signal-key were maintained partly by response-reinforcer contingency. In Experiment II, local contrast in the signal-key procedure was investigated. Response distribution within 30 s period of stimulus presentation revealed that COD produced decreased number of responses to the signal-key after 1.5 s of stimulus onset. These suggest that the stimulus-reinforcer contingency is responsible primarily for the local contrast.
本研究在鸽子身上探讨了使用信号键程序进行辨别训练时，转换延迟（COD）的影响。在实验I中，研究了有无2秒COD的信号键程序后，沿直线倾斜维度的泛化梯度。无论是否应用COD，均得到以下结果：（1）相对泛化梯度相似。（2）在操作键上未观察到行为对比。（3）在多重可变间隔消退（VI EXT）程序的可变间隔（VI）成分期间，对信号键有一些反应。随着2秒的COD，对信号键的反应略有下降。这些数据表明，对信号键的反应部分是由反应-强化物偶联维持的。在实验II中，研究了信号键程序中的局部对比。刺激呈现30秒内的反应分布显示，COD使刺激开始1.5秒后对信号键的反应数量减少。这些结果表明，刺激-强化物偶联主要负责局部对比。
