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Related Experiment Video

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Does Acquiescence Affect Individual Items Consistently?

Chester Chun Seng Kam1, Mingming Zhou1

  • 1University of Macau, Taipa, Macau, China.

Educational and Psychological Measurement
|May 26, 2018
PubMed
Summary

This study investigated response styles in surveys. Findings indicate that acquiescence, a tendency to agree, does not affect individual survey items equally, challenging previous assumptions.

Area of Science:

  • Psychometrics
  • Survey Methodology
  • Quantitative Psychology

Background:

  • Previous research suggests acquiescence effects are consistent across aggregated survey items (essential tau-equivalence).
  • However, the consistency of acquiescence at the individual item level remains under-examined.
  • This gap highlights a need to test the assumption of uniform item susceptibility to acquiescence.

Purpose of the Study:

  • To evaluate the assumption that individual survey items are affected by acquiescence to a similar degree.
  • To assess whether an external acquiescence criterion consistently impacts scale items.
  • To determine the correlation between an external acquiescence criterion and an acquiescence factor derived from tau-equivalence.

Main Methods:

  • Modeling an external criterion for acquiescence.
Keywords:
acquiescencebiasresponse style

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  • Assessing the consistency of acquiescence effects across individual scale items.
  • Testing the correlation between an external acquiescence measure and a tau-equivalent acquiescence factor.

    • Main Results:

    • The results did not support the assumption of consistent acquiescence effects across individual items.
    • An external acquiescence criterion did not affect scale items uniformly.
    • The correlation between the external criterion and the tau-equivalent factor was not strong, indicating a potential violation of the tau-equivalence assumption.

    Conclusions:

    • The assumption that individual items are equally affected by acquiescence is not supported.
    • Acquiescence is better understood as an acquiescence × item interaction, rather than a uniform effect.
    • Future research should consider item-specific influences on response styles like acquiescence.