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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.
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- Psychometric Properties and Administration Measurement Invariance of Social Phobia Symptom Measures: Paper-Pencil vs. Internet Administrations
Laura L. Vernon
George A. Clum
Susan T. Skidmore
- Springer US
Journal of Psychopathology and Behavioral Assessment
Print ISSN: 0882-2689
Elektronisch ISSN: 1573-3505