Department of Learning Sciences, Georgia State University.
Department of Psychology, Southeastern Louisiana University.
J Appl Behav Anal. 2021 Apr;54(2):700-712. doi: 10.1002/jaba.808. Epub 2021 Jan 19.
The multiple-stimulus-without-replacement (MSWO) preference assessment is commonly used in behavior-analytic research and practice. As originally published, the MSWO included 5 sessions in an effort to confirm stimulus preferences. Subsequent researchers have evaluated the validity of MSWO outcomes when the assessment is abbreviated. Generally, valid outcomes have been noted for 3-session MSWOs (that is, the outcomes match those of the 5-session version), while validity outcomes for 1- or 2-session MSWOs have varied across studies. The current study utilized data from 157 MSWO preference assessments conducted in previously published research with 49 total participants and analyzed the extent to which 1-session or 2-session variations of those assessments would have yielded similar outcomes as a 3-session assessment. Results indicate that the hierarchies produced by both abbreviated formats were strongly correlated with those produced by a 3-session assessment. However, neither 1- nor 2-session MSWOs reliably identified the same highest-preferred stimuli as a 3-session MSWO.
无替换多刺激偏好评估（MSWO）在行为分析研究和实践中被广泛应用。原始版本的 MSWO 包括 5 个评估阶段，旨在确认刺激偏好。随后的研究人员评估了缩短评估时间后的 MSWO 结果的有效性。通常情况下，3 个阶段的 MSWO 评估结果是有效的（即，结果与 5 个阶段的版本一致），而 1 个或 2 个阶段的 MSWO 评估结果在不同研究中存在差异。本研究利用了先前发表的研究中 157 次 MSWO 偏好评估的数据，涉及 49 名参与者，并分析了这些评估的 1 个或 2 个阶段的变化在多大程度上会产生与 3 个阶段评估相似的结果。结果表明，这两种缩短格式产生的等级与 3 个阶段评估产生的等级高度相关。然而，无论是 1 个阶段还是 2 个阶段的 MSWO 都无法可靠地识别与 3 个阶段 MSWO 相同的最偏好刺激。
