Comparing Scores From Full Length, Short Form, and Adaptive Tests of the Social Interaction Anxiety and Social Phobia Scales

Abstract

The current study developed and examined the performance of a computerized adaptive version of the Social Interaction Anxiety and Social Phobia Scales (SIAS/SPS) and compared results with a previously developed static short form (SIAS-6/SPS-6) in terms of measurement precision, concordance with the full forms, and sensitivity to treatment. Among an online sample of Australian adults, there were relatively minor differences in the performance of the adaptive tests and static short forms when compared with the full scales. Moreover, both adaptive and static short forms generated similar effect sizes across treatment in a clinical sample. This provides further evidence for the use of static or adaptive short forms of the SIAS/SPS rather than the lengthier 20-item versions. However, at the individual level, the adaptive tests were able to maintain an acceptable level of precision, using few items as possible, across the severity continua in contrast to the static short forms.

Psychometric Properties of the Short Forms of the Social Interaction Anxiety Scale and the Social Phobia Scale in a Chinese College Sample

“…The factor models suggested in the article with different cultures were tested and compared, and the results showed that the two-factor model of the short form of the SIAS-6/SPS-6 demonstrated acceptable fit. Consistent with most previous studies (Le Blanc et al, 2014;Erceg-Hurn and McEvoy, 2018;Sunderland et al, 2019;Wong et al, 2019), the SIAS-6/SPS-6 was the most widely used short form in the future and exhibited similar psychometric properties as those of the full forms. This means that the two-factor model is robust and has cross-cultural significance.…”

“…Some factor models discussed earlier were tested and compared in the context of Chinese culture. According to previous studies (Carleton et al, 2014;Le Blanc et al, 2014;Gomez, 2016;Mörtberg et al, 2017;Erceg-Hurn and McEvoy, 2018;Sunderland et al, 2019;Wong et al, 2019), we expected the SIAS-6/SPS-6 to fit the data best. Ye et al (2007) employed paper-andpencil full forms to administer the scales, and the Chinese version had better internal consistency and convergent validity.…”

“…Furthermore, over the last decade several short-version scales of the SIAS and SPS have been developed. Many studies have indicated that the short forms of the SIAS and SPS have similar psychometric properties as those of the full forms (Carleton et al, 2014;Fergus et al, 2014;Le Blanc et al, 2014;Erceg-Hurn and McEvoy, 2018;Sunderland et al, 2019). These findings suggest that either of the short-version scales can be used instead of the full scales to efficiently measure social anxiety.…”

Development of the short Creative Expression Interest Scale based on item response theory

“…A bifactor model was used for the confirmatory factor analysis (CFA) (Li et al, 2015 ). Then researchers, via the bifactor function in the psych package of software R4.1.1, conducted a confirmatory factor analysis to test the unidimensionality in the way of high-order bifactor analysis (Gibbons and Hedeker, 1992 ; Reise et al, 2013 ; Sunderland et al, 2020 ). Model fit statistics were used to evaluate model fit and a select optimal number of specific factors and omega.h (ω h ) coefficient.…”

Ansiedade social: adaptação e evidências de validade da forma curta da Social Interaction Anxiety Scale e da Social Phobia Scale para o Brasil

“…Foram elaboradas versões mais curtas dessas escalas -a SIAS-6 e a SPS-6 26 -contando com apenas seis itens cada uma, originalmente no contexto australiano. As versões curtas apresentam resultados bastante satisfatórios em comparação às versões integrais das escalas, apresentando a vantagem de ter um tamanho reduzido, facilitando a aplicação 27 .…”