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Inattentive responding can induce spurious associations between task behaviour and symptom measures.

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Area of Science:

  • Psychiatric research methodology
  • Cognitive psychology
  • Online data collection

Background:

  • Online samples offer advantages for psychiatric research but present unique challenges.
  • Potential pitfalls, such as spurious correlations, are not fully understood.
  • Asymmetric score distributions in psychiatric surveys can be influenced by careless responding.

Purpose of the Study:

  • To detail circumstances leading to spurious correlations between task behavior and symptom scores in online psychiatric research.
  • To investigate the impact of careless responding on these correlations.
  • To evaluate methods for mitigating spurious findings.

Main Methods:

  • Analysis of two online samples (N=779) performing common cognitive tasks.
  • Examination of survey data for careless responding.
  • Assessment of task performance data for inattention.
  • Statistical analysis to identify correlations between symptom scores and task behavior.

Main Results:

  • Spurious correlations were observed between symptom scores and task behavior in online samples.
  • False-positive rates for these correlations increased with sample size.
  • Excluding participants based on survey carelessness eliminated spurious correlations.
  • Exclusion based solely on task performance was less effective in removing these false associations.

Conclusions:

  • Careless responding in psychiatric surveys can create artificial associations with cognitive task performance in online studies.
  • Researchers must be cautious of spurious correlations, particularly with large online datasets.
  • Implementing checks for careless survey responding is crucial for data integrity in online psychiatric research.