Following 30 days of reinforcement for the bar press response of two white rats on 30-sec fixed-interval (FI), a DRL component was added so that a minimal interresponse time (IRT) for the reinforced response, in addition to the FI variable, was necessary for reinforcement. Marked control over response rate by the superimposed DRL requirement was demonstrated by an inverse hyperbolic function as the DRL component was increased from 1 to 24 sec within the constant 30-sec FI interval. Interresponse time and post-reinforcement (post-SR) “break” distributions taken at one experimental point (DRL = 24 sec) suggested that a more precise temporal discrimination was initiated by an SR than by a response, since the relative frequency of a sequence of two reinforced responses appeared greater than that of a sequence of a non-reinforced response followed by a reinforced one. This latter finding was confirmed with new animals in a follow-up experiment employing a conventional 24-sec DRL schedule.
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机译:在30天固定间隔(FI)上增强两只白鼠的直板压力反应30天后,添加了DRL组件,以使除了FI变量外,增强反应的最小响应时间(IRT) ,是加固所必需的。当DRL分量在恒定的30秒FI间隔内从1秒增加到24秒时,反双曲函数证明了叠加DRL要求对响应速率的明显控制。在一个实验点(DRL = 24 sec)处进行的响应时间和强化后(post-S R sup>)“断裂”分布表明,S R引发了更精确的时间区分 sup>而不是响应,因为两个增强响应序列的相对频率似乎比非增强响应序列与增强响应序列的相对频率更大。后一发现在采用常规24秒DRL时间表的后续实验中被新动物证实。
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