Psychometric validation of the Persian Bergen Social Media Addiction Scale using classic test theory and Rasch models

Lin, C.-Y., Broström, A., Nilsen, P., Griffiths, M.D. ORCID: 0000-0001-8880-6524 and Pakpour, A.H., 2017. Psychometric validation of the Persian Bergen Social Media Addiction Scale using classic test theory and Rasch models. Journal of Behavioral Addictions, 6 (4), pp. 620-629. ISSN 2062-5871

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Background and aims: The Bergen Social Media Addiction Scale (BSMAS), a six-item self-report scale that is a brief and effective psychometric instrument for assessing at-risk social media addiction on the Internet. However, its psychometric properties in Persian have never been examined and no studies have applied Rasch analysis for the psychometric testing. This study aimed to verify the construct validity of the Persian BSMAS using confirmatory factor analysis (CFA) and Rasch models among 2,676 Iranian adolescents.

Methods: In addition to construct validity, measurement invariance in CFA and differential item functioning (DIF) in Rasch analysis across gender were tested for in the Persian BSMAS.

Results: Both CFA [comparative fit index (CFI) = 0.993; Tucker–Lewis index (TLI) = 0.989; root mean square error of approximation (RMSEA) = 0.057; standardized root mean square residual (SRMR) = 0.039] and Rasch (infit MnSq = 0.88–1.28; outfit MnSq = 0.86–1.22) confirmed the unidimensionality of the BSMAS. Moreover, measurement invariance was supported in multigroup CFA including metric invariance (ΔCFI = −0.001; ΔSRMR = 0.003; ΔRMSEA = −0.005) and scalar invariance (ΔCFI = −0.002; ΔSRMR = 0.005; ΔRMSEA = 0.001) across gender. No item displayed DIF (DIF contrast = −0.48 to 0.24) in Rasch across gender.

Conclusions: Given the Persian BSMAS was unidimensional, it is concluded that the instrument can be used to assess how an adolescent is addicted to social media on the Internet. Moreover, users of the instrument may comfortably compare the sum scores of the BSMAS across gender.

Item Type: Journal article
Publication Title: Journal of Behavioral Addictions
Creators: Lin, C.-Y., Broström, A., Nilsen, P., Griffiths, M.D. and Pakpour, A.H.
Publisher: Akadémiai Kiadó
Date: December 2017
Volume: 6
Number: 4
ISSN: 2062-5871
Rights: This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium for non-commercial purposes, provided the original author and source are credited.
Divisions: Schools > School of Social Sciences
Record created by: Jonathan Gallacher
Date Added: 05 Dec 2017 13:18
Last Modified: 31 May 2018 11:10

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