An Introduction to Item Response Theory for Health Behavior Researchers

Autor/inn/en	Warne, Russell T.; McKyer, E. J. Lisako; Smith, Matthew L.
Titel	An Introduction to Item Response Theory for Health Behavior Researchers
Quelle	In: American Journal of Health Behavior, 36 (2012) 1, S.31-43 (13 Seiten) PDF als Volltext Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	1087-3244
DOI	10.5993/AJHB.36.1.4
Schlagwörter	Health Behavior; Researchers; Item Response Theory; Research Methodology; Substance Abuse; Surveys; Adolescents; At Risk Persons; Questionnaires; Models; Scores; Psychometrics + Suchen Sie Ihr Suchwort? Health behaviour; Gesundheitsverhalten; Researcher; Forscher; Item-Response-Theorie; Research method; Forschungsmethode; Drug use; Drug consomption; Drogenkonsum; Survey; Umfrage; Befragung; Adolescent; Adolescence; Adoleszenz; Jugend; Jugendalter; Jugendlicher; Risikogruppe; Fragebogen; Analogiemodell; Psychometry; Psychometrie
Abstract	Objective: To introduce item response theory (IRT) to health behavior researchers by contrasting it with classical test theory and providing an example of IRT in health behavior. Method: Demonstrate IRT by fitting the 2PL model to substance-use survey data from the Adolescent Health Risk Behavior questionnaire (n = 1343 adolescents). Results: An IRT 2PL model can produce viable substance use scores that differentiate different levels of substance use, resulting in improved precision and specificity at the respondent level. Conclusion: IRT is a viable option for health researchers who want to produce high-quality scores for unidimensional constructs. The results from our example--although not flawless--demonstrate the feasibility of IRT in health behavior research. (As Provided).
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Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2017/4/10