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A random-object-kinematogram plugin for web-based research: implementing oriented objects enables varying coherence

Younes Strittmatter1, Markus Wolfgang Hermann Spitzer2, Andrea Kiesel1

  • 1Department of Cognitive Psychology, University of Freiburg, Freiburg im Breisgau, Germany.

Behavior Research Methods
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Summary
This summary is machine-generated.

The new random-object kinematogram (ROK) plugin for jsPsych enables web-based cognitive psychology experiments. It allows independent manipulation of stimulus coherence and feature congruency, revealing effects on reaction times and error rates.

Keywords:
Congruency effectJsPsych pluginObject implementationOnline experimentsRandom-dot kinematogram

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Area of Science:

  • Cognitive Psychology
  • Human-Computer Interaction
  • Experimental Design

Background:

  • Web-based research accelerates data collection in cognitive psychology.
  • Open access software like jsPsych is crucial for integrating experimental tasks online.
  • Existing tools like the random-dot kinematogram (RDK) plugin facilitate web-based studies on visual perception.

Purpose of the Study:

  • Introduce the novel random-object kinematogram (ROK) plugin for jsPsych.
  • Enable web-based experiments using oriented objects with adjustable coherence and feature congruency.
  • Investigate the independent effects of coherence and congruency on cognitive task performance.

Main Methods:

  • Developed the ROK plugin for jsPsych, allowing object-based stimuli (e.g., triangles, arrows).
  • Implemented two experiments varying coherence and congruency levels of stimuli.
  • Measured participants' reaction times (RTs) and error rates across different experimental conditions.

Main Results:

  • Lower coherence levels significantly increased RTs and error rates.
  • Lower congruency levels (feature incongruency) also led to increased RTs and error rates.
  • Coherence and congruency independently influenced task performance.

Conclusions:

  • The ROK plugin offers advanced capabilities for web-based cognitive research by allowing independent manipulation of coherence and congruency.
  • This provides new avenues for studying stimulus interference and task difficulty in online experimental settings.
  • The plugin enhances the flexibility and scope of web-based cognitive psychology research.