J Exp Anal Behav. 1995 May;63(3):255-76. doi: 10.1901/jeab.1995.63-255.
A three-component concurrent-chains procedure was used to investigate preference between terminal-link schedules that differed in delay and magnitude of reinforcement. Response and time allocation data were well described by a generalized matching model. Sensitivity to delay appeared to be lower when reinforcement magnitudes were unequal than when they were equal, but when obtained rather than programmed time spent responding in the initial links was used in the model, the difference vanished. The results support independence of delay and magnitude as separate dimensions of reinforcement value, as required by the matching law, and the assumption of the contextual choice model (Grace, 1994) that sensitivities to delay and magnitude are affected similarly by temporal context. Although there was statistical evidence for interaction between successive components, the effects were small and transient. The multiple-component concurrent-chains procedure should prove useful in future research on multidimensional preference, although it may be necessary to control obtained initial-link time more precisely.
采用三组件并发链程序研究了在延迟和强化量不同的终端链接时间表之间的偏好。反应和时间分配数据可以很好地用广义匹配模型来描述。当强化量不等时，对延迟的敏感性似乎低于强化量相等时，但当在模型中使用初始链接中获得而不是编程的响应时间时，差异消失了。这些结果支持了匹配律所要求的延迟和幅度作为强化值的独立维度，以及上下文选择模型（Grace，1994）的假设，即延迟和幅度的敏感性受时间上下文的影响相似。尽管在连续组件之间有统计证据表明存在相互作用，但这些影响很小且短暂。多组件并发链程序应该在未来的多维偏好研究中证明是有用的，尽管可能需要更精确地控制获得的初始链接时间。
