The multiple stimulus without replacement (MSWO) preference assessment is commonly used to identify potential reinforcers. In this arrangement, individuals can choose the order in which they consume edibles or activities. The item selected first is often designated the highest preferred, and the item selected last is often designated the least preferred. Scattered reports suggest that some individuals may save the best for last in an MSWO. Despite these reports, few systematic evaluations of “saving the best for last” in the MSWO have been conducted. We examined this phenomenon using an MSWO and progressive-ratio-reinforcer assessment. Evidence of “saving the best for last” was obtained for one of four individuals across assessments involving edibles and leisure activities, respectively.

中文翻译：

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有智力和发育障碍的人是否更愿意在 MSWO 中把最好的留到最后？初步调查

多重刺激无替代 (MSWO) 偏好评估通常用于识别潜在的强化物。在这种安排下，个人可以选择他们消费食物或活动的顺序。首先选择的项目通常被指定为最高优先，而最后选择的项目通常被指定为最不优先。分散的报告表明，有些人可能会在 MSWO 中把最好的留到最后。尽管有这些报告，但很少有人对 MSWO 中的“将最好的留到最后”进行系统评估。我们使用 MSWO 和渐进比率强化剂评估检查了这种现象。在涉及食品和休闲活动的评估中，四个人中的一个分别获得了“将最好的留到最后”的证据。