Abstract
The psychometric properties of the online versions of assessment instruments for phobias and related symptoms were compared
to those of paper-pencil versions. The examined measures were the Social Interaction Anxiety Scale (SIAS) and Social Phobia
Scale (SPS). Students (n = 514) completed the instruments either in a paper-pencil in lab condition or an online at home condition. Means of the measures
were largely equivalent between the two groups. Factor structures of the measures support construct validity of the two versions
of the questionnaires. The coefficient alphas for the measures were reasonably high, ranging between .91 and .93 for both
groups. Correlations between the measures were similar across groups. Overall, adequate psychometric properties of the online
versions of the instruments were demonstrated, however, neither of the social phobia measures demonstrated measurement invariance
between the two assessment modalities.
to those of paper-pencil versions. The examined measures were the Social Interaction Anxiety Scale (SIAS) and Social Phobia
Scale (SPS). Students (n = 514) completed the instruments either in a paper-pencil in lab condition or an online at home condition. Means of the measures
were largely equivalent between the two groups. Factor structures of the measures support construct validity of the two versions
of the questionnaires. The coefficient alphas for the measures were reasonably high, ranging between .91 and .93 for both
groups. Correlations between the measures were similar across groups. Overall, adequate psychometric properties of the online
versions of the instruments were demonstrated, however, neither of the social phobia measures demonstrated measurement invariance
between the two assessment modalities.
- Content Type Journal Article
- Pages 1-10
- DOI 10.1007/s10862-011-9257-2
- Authors
- Michiyo Hirai, Department of Psychology and Anthropology, University of Texas- Pan American, 1201 W. University Drive, Edinburg, TX 78539, USA
- Laura L. Vernon, Florida Atlantic University, Jupiter, FL, USA
- George A. Clum, Virginia Polytechnic Institute and State University, Blacksburg, VA, USA
- Susan T. Skidmore, Sam Houston State University, Huntsville, TX, USA
- Journal Journal of Psychopathology and Behavioral Assessment
- Online ISSN 1573-3505
- Print ISSN 0882-2689