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Speeded response tasks with unpredictable deadlines
Journal of Mathematical Psychology ( IF 1.8 ) Pub Date : 2023-05-17 , DOI: 10.1016/j.jmp.2023.102776
Steven P. Blurton , Jan Feifel , Matthias Gondan

In response time (RT) research, it is common to instruct participants to respond as fast and as accurately as possible, which is easily conceived as a contradiction. Participants may overcome this dilemma using a two-fold strategy, with (A) delaying their response until they feel confident that enough information has been sampled, and (B) scheduling the response right before the end of the response window to avoid omissions. The purpose of this strategy is to satisfy the contradictory requirements of the task instructions, but both (A) and (B) may yield a distorted picture of the processing times under investigation. We asked participants to discriminate random dot motion with fixed and variable deadlines for responding. With the exponentially distributed variable deadline, strategic responding is useless because it is impossible to schedule an optimal time point for the response. We present two analyses, a model-free approach that investigates the effect of an unpredictable deadline on standard RT measures, and the fit of an RT model testing for effects of the deadline on specific parameters. Compared to the fixed deadline, faster responses that were less variable across participants were observed under the variable deadline, suggesting that the new paradigm can reduce strategic responding. We demonstrate how to deal with omitted responses and conclude that variable deadlines are a promising tool to exert time pressure in RT experiments and potentially yield better estimates of the underlying processing times.



中文翻译:

具有不可预测的截止日期的快速响应任务

在响应时间(RT)研究中,通常要求参与者尽可能快和准确地响应,这很容易被认为是矛盾的。参与者可以使用双重策略来克服这个困境,(A) 延迟他们的响应,直到他们确信已经采样了足够的信息,以及 (B) 在响应窗口结束之前安排响应以避免遗漏。此策略的目的是满足任务指令的矛盾要求,但 (A) 和 (B) 可能会产生所调查处理时间的扭曲图片。我们要求参与者区分具有固定和可变响应期限的随机点运动。具有指数分布的变量截止日期,战略响应是无用的,因为无法为响应安排最佳时间点。我们提出了两种分析,一种是研究不可预测的截止日期对标准 RT 测量的影响的无模型方法,另一种是测试截止日期对特定参数的影响的 RT 模型的拟合度。与固定截止日期相比,在可变截止日期下观察到参与者之间变化较小的更快响应,这表明新范式可以减少战略响应。我们演示了如何处理遗漏的响应,并得出结论,可变截止日期是一种很有前途的工具,可以在 RT 实验中施加时间压力,并有可能对基础处理时间产生更好的估计。一种无模型方法,用于研究不可预测的截止日期对标准 RT 测量的影响,以及测试截止日期对特定参数的影响的 RT 模型的拟合度。与固定截止日期相比,在可变截止日期下观察到参与者之间变化较小的更快响应,这表明新范式可以减少战略响应。我们演示了如何处理遗漏的响应,并得出结论,可变截止日期是一种很有前途的工具,可以在 RT 实验中施加时间压力,并有可能对基础处理时间产生更好的估计。一种无模型方法,用于研究不可预测的截止日期对标准 RT 测量的影响,以及测试截止日期对特定参数的影响的 RT 模型的拟合度。与固定截止日期相比,在可变截止日期下观察到参与者之间变化较小的更快响应,这表明新范式可以减少战略响应。我们演示了如何处理遗漏的响应,并得出结论,可变截止日期是一种很有前途的工具,可以在 RT 实验中施加时间压力,并有可能对基础处理时间产生更好的估计。在可变截止日期下观察到参与者之间变化较小的更快响应,这表明新范式可以减少战略响应。我们演示了如何处理遗漏的响应,并得出结论,可变截止日期是一种很有前途的工具,可以在 RT 实验中施加时间压力,并有可能对基础处理时间产生更好的估计。在可变截止日期下观察到参与者之间变化较小的更快响应,这表明新范式可以减少战略响应。我们演示了如何处理遗漏的响应,并得出结论,可变截止日期是一种很有前途的工具,可以在 RT 实验中施加时间压力,并有可能对基础处理时间产生更好的估计。

更新日期:2023-05-17
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