Researchers are increasingly using objective methods to study constructs related to suicidal thoughts and behavior (STB; e.g., self-identification with suicide), such as via behavioral tasks and brain imaging. Although promising, such approaches often are limited by the use of overly general stimuli (e.g., images, words) to represent constructs under study (e.g., suicide attempt). Overly general stimuli are problematic because they inadequately represent constructs, contributing to measurement error and thereby decreasing the internal and external validity of findings. To address this issue in suicide research specifically, we developed a set of first-person (FP) perspective suicide images depicting suicide attempt, evaluated its psychometric properties in one study, and examined whether people with recent suicidal thoughts rated FP-suicide images differently than people with no history of STB in a second study. Study 1 (N = 221) results suggest FP-suicide images have good construct validity (rs = .66-.87 with other suicide images) and internal consistency (Cronbach αs > .80) across three subjective rating dimensions (i.e., valence, arousal, threat). Study 2 (N = 73) results suggest that people with recent suicidal thoughts display substantially lower aversion toward FP-suicide images (i.e., lower negative valence [d = 1.22, p < .001], lower arousal [d = .61, p < .05] and lower threat ratings [d = 1.27, p < .001]) than people with no STB history. FP-suicide images provide researchers using behavioral tasks/brain imaging paradigms with more self-relevant stimuli that may increase the internal and external validity of findings. First-person stimuli may improve both our understanding and prediction of STB as well as provide novel targets (e.g., lower aversion to suicide) for clinical intervention. (PsycInfo Database Record (c) 2020 APA, all rights reserved).

中文翻译：

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第一人称刺激：提高自杀和相关行为研究中刺激的有效性。

研究人员越来越多地使用客观方法来研究与自杀念头和行为有关的构造（STB；例如，自杀自我识别），例如通过行为任务和大脑成像。尽管有希望，但是这种方法通常受到过度过度的刺激（例如图像，文字）的限制，以代表正在研究的结构（例如自杀企图）。过于笼统的刺激是有问题的，因为它们不足以表示结构，导致测量误差，从而降低了结果的内部和外部有效性。为了专门解决自杀研究中的这个问题，我们开发了一组描述自杀未遂的第一人称（FP）透视自杀图像，并在一项研究中评估了其心理计量特性，并在第二项研究中检查了具有自杀意念的人对FP自杀图像的评价是否与没有STB历史的人不同。研究1（N = 221）的结果表明，FP自杀图像在三个主观评分维度（即效价，唤醒，威胁）。研究2（N = 73）的结果表明，最近有自杀念头的人显示出对FP自杀图像的反感大大降低（即，较低的负价[d = 1.22，p <.001]，较低的唤醒度[d = .61，p <.05]且威胁等级[d = 1.27，p <.001]比没有STB历史的人更低。FP自杀图像为使用行为任务/大脑成像范例的研究人员提供了更多与自我相关的刺激，这可能会增加研究结果的内部和外部有效性。第一人称刺激可能会改善我们对机顶盒的理解和预测，并为临床干预提供新的目标（例如，降低对自杀的厌恶感）。（PsycInfo数据库记录（c）2020 APA，保留所有权利）。