Crowdsourced Measurement of Reaction Times to Audiovisual Stimuli With Various Degrees of Asynchrony
Crowdsourced Measurement of Reaction Times to Audiovisual Stimuli With Various Degrees of Asynchrony
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DOI：
10.1177/0018720818787126
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发表时间：
2018-12-01
期刊：
影响因子：
3.3
通讯作者：
de Winter, Joost
中科院分区：
文献类型：
--
作者：
Bazilinskyy, Pavlo;de Winter, Joost
目的：本研究的目的是复制过去的研究，视听刺激的反应时间与不同的刺激起始时间（SOA）使用大样本的众包受访者。背景资料：研究表明，当听觉和视觉刺激同时出现时，反应时间最快，SOA会导致反应时间增加，这种增加取决于刺激强度。视听SOA的研究已经进行了少量的参与者。方法：参与者（N = 1，823）使用CrowdFlower进行了176次反应时间试验，包括29个SOA水平和3个视觉强度水平，每位参与者的补偿为0.20美元。通过当地实验室网络研究（N = 34）验证了结果。结果如下：结果重复了过去的研究，平均反应时间作为SOA的函数呈V形，V形在低强度视觉刺激下更强。SOA的水平主要影响右侧的反应时分布，而最快的5%几乎没有受到影响。众包研究的反应时间的变异性高于网络实验室研究。结论：众包是一个很有前途的媒体反应时的研究，涉及小的时间差异刺激呈现。观察到的SOA的影响可以解释一个独立的通道机制，也由一些参与者没有感知到的听觉或视觉刺激，硬件的变化，误解的任务指令，或在注意力的失误。应用：所获得的知识的反应时间的分布可能有利于报警系统的设计。
Objective: This study was designed to replicate past research concerning reaction times to audiovisual stimuli with different stimulus onset asynchrony (SOA) using a large sample of crowdsourcing respondents. Background: Research has shown that reaction times are fastest when an auditory and a visual stimulus are presented simultaneously and that SOA causes an increase in reaction time, this increase being dependent on stimulus intensity. Research on audiovisual SOA has been conducted with small numbers of participants. Method: Participants (N = 1,823) each performed 176 reaction time trials consisting of 29 SOA levels and three visual intensity levels, using CrowdFlower, with a compensation of US$0.20 per participant. Results were verified with a local Web-in-lab study (N = 34). Results: The results replicated past research, with a V shape of mean reaction time as a function of SOA, the V shape being stronger for lower-intensity visual stimuli. The level of SOA affected mainly the right side of the reaction time distribution, whereas the fastest 5% was hardly affected. The variability of reaction times was higher for the crowdsourcing study than for the Web-in-lab study. Conclusion: Crowdsourcing is a promising medium for reaction time research that involves small temporal differences in stimulus presentation. The observed effects of SOA can be explained by an independent-channels mechanism and also by some participants not perceiving the auditory or visual stimulus, hardware variability, misinterpretation of the task instructions, or lapses in attention. Application: The obtained knowledge on the distribution of reaction times may benefit the design of warning systems.