Altering reinforcer variety or intensity changes the within-session decrease in responding
Altering reinforcer variety or intensity changes the within-session decrease in responding
复制标题
DOI：
10.1006/lmot.1997.0984
复制
发表时间：
1997-11-01
影响因子：
1.4
通讯作者：
Weatherly, JN
中科院分区：
文献类型：
--
作者：
Melville, CL;Rue, HC;Weatherly, JN
在实验过程中，操作性反应经常发生系统性的变化。McSweeney、Hinson和Cannon（1996）认为，敏感化和习惯化会在反应过程中产生变化。本研究测试了两个预测的敏感化习惯化的解释。在两个实验中，大鼠按下一个杠杆，以获得由多个可变间隔15秒可变间隔15秒时间表提供的药物。在实验1中，在五种不同的条件下，通过改变被定性不同的干扰剂替换的编程干扰剂的百分比来操纵在会话期间递送的干扰剂的种类，所述百分比从0到75%。在实验2中，通过在五种不同条件下改变用作增透剂的蔗糖和水溶液中的蔗糖浓度（从0至30%）来操纵增透剂的强度。增加刺激物的种类或强度可以减缓反应期内的下降。结果是一致的预测的敏感化-习惯化解释会话内的变化响应。(C)北京：科学出版社.
Operant responding often changes systematically within experimental sessions. McSweeney, Hinson, and Cannon (1996) argued that sensitization and habituation produce within-session changes in responding. The present study tested two predictions of the sensitization-habituation explanation. In two experiments, rats pressed a lever for reinforcers delivered by a multiple variable interval 15-s variable interval 15-s schedule. In Experiment 1, the variety of reinforcers delivered during the session was manipulated by varying the percentage of programmed reinforcers replaced with qualitatively different reinforcers from 0 to 75%, in five different conditions. In Experiment 2, the intensity of the reinforcer was manipulated by varying the concentration of sucrose in the sucrose and water solution used as the reinforcer from 0 to 30%, in five different conditions. Increasing the variety or the intensity of the reinforcers slowed the within-session decrease in responding. The results are consistent with the predictions of a sensitization-habituation explanation of within-session changes in responding. (C) 1997 Academic Press.