对固定间隔时间表的偏好：不等初始链接的影响。
Preference for fixed-interval schedules: effects of unequal initial links.
出版信息
J Exp Anal Behav. 1976 May;25(3):371-6. doi: 10.1901/jeab.1976.25-371.
Six homing pigeons were trained on concurrent chain schedules in which the terminal links were fixed-interval schedules of 5 sec or 15 sec. One initial-link schedule was always VI 27-sec; the other was varied over conditions from VI 27-sec to VI 181-sec. Preference measured in the initial links varied as a joint function of the initial- and terminal-link schedules. When the initial links were varied with constant, but unequal, terminal links, the slope of the function relating the logarithm of the initial-link response ratio to the logarithm of the terminal-link entry ratio differed from that obtained with equal terminal links. This result indicates that biases attributable to the terminal-link schedules were not constant. The rate of change of preference, or degree of undermatching, in the initial links depended on whether the shorter initial link led to the shorter or the longer terminal link. These results raise the question of whether bias and undermatching in concurrent schedule performance are independent measures.
六只家鸽在同时进行的连锁训练中，其终端链接是固定间隔为 5 秒或 15 秒的时间表。一个初始链接时间表始终是 VI 27 秒；另一个根据条件从 VI 27 秒到 VI 181 秒不等。在初始链接中测量的偏好作为初始链接和终端链接时间表的联合函数而变化。当初始链接以恒定但不相等的终端链接变化时，将初始链接响应比的对数与终端链接进入比的对数相关的函数的斜率与具有相等终端链接时的斜率不同。这一结果表明，归因于终端链接时间表的偏差不是恒定的。在初始链接中，偏好的变化率或不匹配程度取决于较短的初始链接是否导致较短或较长的终端链接。这些结果提出了一个问题，即在同时进行的时间表表现中，偏差和不匹配是否是独立的衡量标准。
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