Department of Psychology, College of Human and Health Sciences, Swansea University.
Department of Psychology, Simon Fraser University.
J Exp Psychol Appl. 2021 Mar;27(1):170-186. doi: 10.1037/xap0000337. Epub 2020 Oct 29.
When administering sequential lineups, researchers often inform their participants that only their first yes response will count. This instruction differs from the original sequential lineup protocol and from how sequential lineups are conducted in practice. Participants (N = 896) viewed a videotaped mock crime and viewed a simultaneous lineup, a sequential lineup with a first-yes-counts instruction, or a sequential control lineup (with no first-yes-counts instruction); the lineup was either target-present or target-absent. Participants in the first-yes-counts condition were less likely to identify the suspect and more likely to reject the lineup than participants in the simultaneous and sequential control conditions, suggesting a conservative criterion shift. The diagnostic value of suspect identifications, as measured by partial area under the curve, was lower in the first-yes-counts lineup than in the simultaneous lineup. Results were qualitatively similar for other metrics of diagnosticity, though the differences were not statistically significant. Differences between the simultaneous and sequential control lineups were negligible on all outcomes. The first-yes-counts instruction undermines sequential lineup performance and produces an artifactual simultaneous lineup advantage. Researchers should adhere to sequential lineup protocols that maximize diagnosticity and that would feasibly be implemented in practice, allowing them to draw more generalizable conclusions from their data. (PsycInfo Database Record (c) 2021 APA, all rights reserved).
当进行连续排列时，研究人员通常会告知参与者，只有他们的第一次肯定回答才会被计数。这一指令与原始的连续排列协议以及实际中连续排列的操作方式不同。参与者（N=896）观看了一段录制的模拟犯罪视频，并观看了同时呈现的排列、有第一次肯定计数指令的连续排列或没有第一次肯定计数指令的连续控制排列（无第一次肯定计数指令）；排列中要么有目标出现，要么没有目标出现。在有第一次肯定计数指令的条件下，参与者识别嫌疑人的可能性较小，更有可能拒绝排列，而在同时呈现和连续控制条件下的参与者则不然，这表明存在保守的判定标准转移。以部分曲线下面积衡量的嫌疑人识别的诊断价值，在第一次肯定计数排列中低于同时呈现排列。虽然其他诊断性指标的差异没有统计学意义，但结果在质上是相似的。在所有结果上，同时呈现和连续控制排列之间的差异可以忽略不计。第一次肯定计数指令削弱了连续排列的表现，并产生了人为的同时呈现优势。研究人员应该遵守最大限度提高诊断性的连续排列协议，并在实践中切实可行地实施这些协议，以便从数据中得出更具普遍性的结论。（PsycInfo 数据库记录（c）2021 APA，保留所有权利）。
