Brief Report: An Evaluation of Item Bias on the Functional Activities Questionnaire

David Andres Gonzalez, Michael J. Clark, Mitzi M. Gonzales, Jared Benge

Research output: Contribution to journalArticlepeer-review

3 Scopus citations


Objective: To evaluate whether the Functional Activities Questionnaire (FAQ), a commonly used measure of functional status in neurodegenerative disease research, performs equivalently across demographically diverse subgroups of participants. Method: The FAQs from 30,613 National Alzheimer's Coordinating Center participants were evaluated with a hybrid graded response model-logistic ordinal regression approach to determine the presence of differential item functioning (DIF) within five demographic groups: education, ethnicity, race, language, and sex. Results: Measurable DIF was observed for FAQ items in all groups; however, measures of effect size, latent trait distributions, and item characteristic curves suggested that the impact was minimal for research and practice. Conclusions: The FAQ is able to provide minimally biased assessments of daily functioning across diverse participants, suggesting potential value for offsetting disparities in diagnosis and treatment.

Original languageEnglish (US)
Pages (from-to)276-282
Number of pages7
JournalArchives of Clinical Neuropsychology
Issue number2
StatePublished - Mar 1 2023


  • Activities of daily living (ADLs)
  • Differential item functioning (DIF)
  • Functional Activities Questionnaire (FAQ)
  • Health disparities
  • Item response theory (IRT)
  • Test bias

ASJC Scopus subject areas

  • Neuropsychology and Physiological Psychology
  • Psychiatry and Mental health
  • Clinical Psychology


Dive into the research topics of 'Brief Report: An Evaluation of Item Bias on the Functional Activities Questionnaire'. Together they form a unique fingerprint.

Cite this