Services on Demand
Journal
Article
Indicators
- Cited by SciELO
- Access statistics
Related links
- Similars in SciELO
Share
Actualidades en Psicología
On-line version ISSN 2215-3535Print version ISSN 0258-6444
Abstract
GONZALEZ-BETANZOS, Fabiola; RIVERA-HEREDIA, María Elena and PADROS-BLAZQUEZ, Ferrán. Gender Invariance of the Screening Scale for Generalized Anxiety Disorder (EDTAG). Act.Psi [online]. 2015, vol.29, n.119, pp.141-151. ISSN 2215-3535. http://dx.doi.org/10.15517/ap.v29i119.18774.
The present paper shows how to evaluated invariance using confirmatory factor analysis models for means and covariances (CFA-MACS) for categorical data and models of Item Response Theory (IRT). Invariance analysis in the study of Detection Scale Generalized Anxiety Disorder comparing men and women is exemplified. The scale is widely used in health institutions and by its nature (a brief scale of 12 dichotomous items) any measurement error can have a major impact. Results have shown that the scale has the same configuration, but the item 9 shows differential item functioning, being males more likely to respond affirmatively compared to women in the same trait level. The need for this type of analysis on the scales is discussed.
Keywords : Invariance; Confirmatory Factor Analysis; Item Response Theory; Differential Item Functioning; Generalized Anxiety Disorder.