Studies of wheel-running reinforcement: Parameters of Herrnstein's (1970) response-strength equation vary with schedule order
Studies of wheel-running reinforcement: Parameters of Herrnstein's (1970) response-strength equation vary with schedule order
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DOI：
10.1901/jeab.2000.73-319
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发表时间：
2000-05-01
影响因子：
2.7
通讯作者：
Belke, TW
中科院分区：
文献类型：
--
作者：
Belke, TW
将6只雄性Wistar大鼠暴露于不同顺序的强化时间表，以研究Hermstein（1970）单操作匹配定律方程的估计值是否会随时间表顺序而系统性变化。加固进度按加固率递增和递减的顺序排列。随后，所有大鼠在一个会话内暴露于单一强化时间表，以确定会话内响应的变化。对于每种条件，操作是压杠杆，强化结果是有机会跑15 s。估计的K和Ro较高时，加固时间表安排在顺序增加加固率。在一个单一的强化时间表的会话，响应率增加之间的开始和结束的会话。时间表订单之间的参数差异和会话内的响应率差异之间的正相关性表明，会话内响应率的变化可能与渐近线的差异有关。这些结果对Hermstein（1970）方程中参数估计值的有效性提出了质疑，因为在一个疗程内，化疗药物的疗效发生了变化。
Six male Wistar rats were exposed to different orders of reinforcement schedules to investigate if estimates from Hermstein's (1970) single-operant matching law equation would vary systematically with schedule order. Reinforcement schedules were arranged in orders of increasing and decreasing reinforcement rate. Subsequently, all rats were exposed to a single reinforcement schedule within a session to determine within-session changes in responding. For each condition, the operant was lever pressing and the reinforcing consequence was the opportunity to run for 15 s. Estimates of k and Ro were higher when reinforcement schedules were arranged in order of increasing reinforcement rate. Within a session on a single reinforcement schedule, response rates increased between the beginning and the end of a session. A positive correlation between the difference in parameters between schedule orders and the difference in response rates within a session suggests that the within-session change in response rates may be related to the difference in the asymptotes. These results call into question the validity of parameter estimates from Hermstein's (1970) equation when reinforcer efficacy changes within a session.