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Related Experiment Video

Updated: Jun 9, 2025

Methods to Test Visual Attention Online
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Behavioral Experiments Online?

Christian Böffel1, Ruben Alajos Meinardus1

  • 1Work and Engineering Psychology, Institute of Psychology, RWTH Aachen University, Aachen, Germany.

Experimental Psychology
|October 24, 2024
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Summary
This summary is machine-generated.

Online experiments using PsyToolkit can detect small reaction time differences, replicating the avatar-Simon effect despite lower effect sizes and more timeouts compared to lab studies.

Keywords:
Simon effectavatarsonline experimentsreaction timesstimulus–response compatibility

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Area of Science:

  • Cognitive psychology
  • Human-computer interaction
  • Psychological research methodology

Background:

  • Online experiments offer advantages over traditional lab settings.
  • Precise stimulus presentation and response detection are critical for reaction time studies.
  • Online experiments face challenges like hardware variability and lack of control.

Purpose of the Study:

  • To investigate the efficacy of online experiments in detecting subtle reaction time differences.
  • To assess the suitability of the Psy Toolkit for online reaction time research.
  • To replicate the avatar-Simon effect in an online environment.

Main Methods:

  • An online experiment utilizing the avatar-Simon task was conducted.
  • Participants responded to stimulus color based on avatar's perspective.
  • The Psy Toolkit was employed for stimulus presentation and response detection.

Main Results:

  • The avatar-Simon effect was successfully replicated in the online setting.
  • Observed effect sizes were smaller, and timeout rates were higher than in laboratory studies.
  • Distributional and reliability analyses supported the Psy Toolkit's capability.

Conclusions:

  • Psy Toolkit is a viable tool for detecting behavioral effects in the tens of milliseconds range online.
  • Online experiments can reliably measure small reaction time variations.
  • Strategies are needed to mitigate potential issues in online reaction time research.