Work

Measuring Constructs in Family Science: How Can Item Response Theory Improve Precision and Validity?

Year: 2015

Type: article

Abstract: This article provides family scientists with an understanding of contemporary measurement perspectives and the ways in which item response theory (IRT) can be used to develop measures with desired evidence of precision and validity for research uses. The article offers a nontechnical introduction to some key features of IRT, including its orientation toward locating items along an underlying dimension and toward estimating precision of measurement for persons with different levels of that same construct. It also offers a didactic example of how the approach can be used to refine conceptualization and operationalization of constructs in the family sciences, using data from the National Longitudinal Survey of Youth 1979 (n = 2,732). Three basic models are considered: (a) the Rasch and (b) two-parameter logistic models for dichotomous items and (c) the Rating Scale Model for multicategory items. Throughout, the author highlights the potential for researchers to elevate measurement to a level on par with theorizing and testing about relationships among constructs.

Source: Journal of Marriage and the Family

DOI: 10.1111/jomf.12157

Author: Rachel A. Gordon

Institution: University of Illinois Chicago

Language: English

Topic: Psychometric Methodologies and Testing

Subfield: Management Science and Operations Research

Field: Decision Sciences

Domain: Social Sciences

Open Access status: green

Funder: Eunice Kennedy Shriver National Institute of Child Health and Human Development

Award: Domain-Specific Child Care Quality and Child Health, Cognition and Behavior