University of Illinois Urbana-Champaign

Measurement equivalence of the Comprehensive Personality Scales across cultures: an item response theory approach

Zhang, Luyao

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https://hdl.handle.net/2142/97538

Description

Title
Measurement equivalence of the Comprehensive Personality Scales across cultures: an item response theory approach
Author(s)
Zhang, Luyao
Issue Date
2017-03-07
Director of Research (if dissertation) or Advisor (if thesis)
Drasgow, Fritz
Department of Study
Psychology
Discipline
Psychology
Degree Granting Institution
University of Illinois at Urbana-Champaign
Degree Name
M.A.
Degree Level
Thesis
Keyword(s)
  • Item response theory
  • Differential item functioning (DIF)
  • Dominance model
  • Samejima's graded response (SGR) model
  • Ideal point model
  • The generalized graded unfolding model (GGUM)
Abstract
Within the item response theory (IRT) framework, this study compared cross-culturally different approaches to the assessment of differential item functioning (DIF) in two personality tests of the Comprehensive Personality Scale (Wang, 2013). A dominance IRT model (SGRM) and an ideal point model (the GGUM) were applied within the NHST paradigm, due to the debate over which is the more appropriate model for personality research. Nye’s (2011) DIF effect size measure was also used in the current study to overcome the oversensitivity of NHST to large sample size. Participants from the U.S. (n = 861) and China (n = 1023) responded to two personality scales from the CPS: the Well-being scale, and the Curiosity scale. Results indicated that SGR was applicable for DIF assessment, but the NHST paradigm was so sensitive to large samples that even trivial DIF could be significant. GGUM failed to work in the DIF analyses due to ill-conditioned matrices. The DIF effect size measure compensated for the NHST method by providing the magnitude of DIF. Implications for future research and practice are discussed.
Graduation Semester
2017-05
Type of Resource
text
Permalink
http://hdl.handle.net/2142/97538
Copyright and License Information
Copyright 2017 Luyao Zhang

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