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Area of Science:

  • Psychometrics
  • Psychological Measurement
  • Item Response Theory

Background:

  • Understanding response styles is crucial for accurate attitudinal measurement.
  • Traditional models may not adequately separate response styles from substantive traits.

Purpose of the Study:

  • To introduce and apply item response tree models for analyzing multiple response processes.
  • To investigate how different response formats impact the measurement of Personal Need for Structure traits and associated response styles.

Main Methods:

  • Development of specific item response tree models tailored to each response format.
  • Empirical application using three distinct response formats to measure a 2-dimensional trait.

Main Results:

  • Item response tree models successfully captured response styles specific to each format.
  • Response formats resulted in comparable measures of the Personal Need for Structure traits.
  • Significant differences in response-style effects were observed across the formats.

Conclusions:

  • Item response tree models provide a powerful tool for disassociating response styles and substantive traits.
  • The choice of response format can influence response styles without necessarily altering the core trait measurement.