Alternate versions of a fixed-choice, delay-discounting assessment for repeated-measures designs.

Alternate versions of a fixed-choice, delay-discounting assessment for repeated-measures designs.
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用于重复测量设计的固定选择延迟贴现评估的替代版本。

DOI:
10.1037/pha0000211
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发表时间:
2018
影响因子:
2.3
通讯作者:
Yi,Richard
Yi,Richard
中科院分区:
医学3区
文献类型:
--
作者:
Kuang,Jinyi;Milhorn,Hannah;Stuppy-Sullivan,Allison;Jung,Soyeon;Yi,Richard

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延迟折扣,反映在倾向于立即奖励超过延迟奖励,与大多数形式的问题物质使用有关。当多次评估以检查个体内变化时,例如,在急性药物给药或干预后,仅仅由于重复评估而导致的延迟折扣变化是一个问题,特别是当评估任务相同时。这可能是真实的货币选择问卷(MCQ),一个广泛使用的,固定项目的延迟折扣评估。本研究探讨了MCQ指标在测试/重测时可能存在的个体内差异/等效性。这与在复检时使用MCQ替代版本时的个体内差异/等效性形成对比,该替代版本专门用于维持原始MCQ的评估结构和评分,但选择项目不同。84名受试者在测试和重测时完成延迟折扣,间隔1周;受试者被随机分配在测试和重测时完成MCQ(MCQ/MCQ; n= 43)或在测试时完成MCQ并在重测时完成MCQ的替代版本(MCQ/MCQ-A; n= 41)。传统的假设检验表明,在MCQ/MCQ条件或MCQ/MCQ-A条件下,延迟折扣没有显着变化。然而,能够确定评分是否具有统计学等效性的等效性分析表明,在某些情况下,测试/复检评分不等效。具体而言,在MCQ/MCQ条件下,只有1个量值在测试/重新测试时是等效的,而在MCQ/MCQ-A条件下,2个量值在测试/重新测试时是等效的。
Delay discounting, reflected in the tendency to prefer immediate rewards over delayed rewards, is associated with most forms of problematic substance use. When assessed multiple times to examine within-individual changes, for example, following acute drug administration or an intervention, shifts in delay discounting simply because of repeated assessment is a concern, particularly when the assessment task is identical. This may be true for the Monetary Choice Questionnaire (MCQ), a widely used, fixed-item assessment of delay discounting. The present research examined possible within-individual difference/equivalence of MCQ indices at test/retest. This was contrasted with within-individual difference/equivalence when using an alternate version of the MCQ at retest, specifically developed to maintain the assessment structure and scoring of the original MCQ but with different choice items. Eighty-four participants completed delay discounting at test and retest with a 1-week interval; participants were randomized to complete the MCQ at both test and retest (MCQ/MCQ; n= 43) or complete the MCQ at test and an alternate version of the MCQ at retest (MCQ/MCQ-A; n= 41). Conventional hypothesis testing indicated no significant changes in delay discounting in the MCQ/MCQ condition or MCQ/MCQ-A condition. However, equivalence analysis, which is able to established whether scores are statistically equivalent, indicated that test/retest scores were not equivalent in some cases. Specifically, only 1 magnitude in the MCQ/MCQ condition was equivalent at test/retest, whereas 2 magnitudes in the MCQ/MCQ-A condition were equivalent at test/retest.
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