QRTEngine: An easy solution for running online reaction time experiments using Qualtrics.
QRTEngine: An easy solution for running online reaction time experiments using Qualtrics.
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DOI：
10.3758/s13428-014-0530-7
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发表时间：
2015-12
影响因子：
5.4
通讯作者：
van Steenbergen H
中科院分区：
文献类型：
--
作者：
Barnhoorn JS;Haasnoot E;Bocanegra BR;van Steenbergen H
进行在线行为研究在心理和认知科学的研究人员中越来越受欢迎。然而，目前可用的方法进行在线反应时间实验往往是复杂的，通常需要先进的技术技能。在本文中，我们介绍Qualtrics反应时间引擎（QRTEngine），这是一个开源JavaScript引擎，可以嵌入在线调查开发环境Qualtrics中。QRTEngine可用于轻松开发基于浏览器的在线反应时间实验，在当前浏览器功能范围内具有准确的计时，并且只需要最少的编程技能。在介绍了QRTEngine之后，我们简要讨论了如何创建和分发Stroop任务。接下来，我们描述了一项研究，在这项研究中，我们调查了引擎的定时精度在不同的处理器负载下使用外部计时。最后，我们表明，QRTEngine可用于再现经典的行为效应在三个反应时范式：Stroop任务，注意力眨眼任务，和掩蔽启动任务。这些研究结果表明，QRTEngine可以作为一种工具进行在线行为研究，即使这需要准确的刺激呈现时间。本文的在线版本（doi：10.3758/s13428-014-0530-7）包含补充材料，可供授权用户使用。
Performing online behavioral research is gaining increased popularity among researchers in psychological and cognitive science. However, the currently available methods for conducting online reaction time experiments are often complicated and typically require advanced technical skills. In this article, we introduce the Qualtrics Reaction Time Engine (QRTEngine), an open-source JavaScript engine that can be embedded in the online survey development environment Qualtrics. The QRTEngine can be used to easily develop browser-based online reaction time experiments with accurate timing within current browser capabilities, and it requires only minimal programming skills. After introducing the QRTEngine, we briefly discuss how to create and distribute a Stroop task. Next, we describe a study in which we investigated the timing accuracy of the engine under different processor loads using external chronometry. Finally, we show that the QRTEngine can be used to reproduce classic behavioral effects in three reaction time paradigms: a Stroop task, an attentional blink task, and a masked-priming task. These findings demonstrate that QRTEngine can be used as a tool for conducting online behavioral research even when this requires accurate stimulus presentation times. The online version of this article (doi:10.3758/s13428-014-0530-7) contains supplementary material, which is available to authorized users.