Scientific background: SOMEDIS-A (Social Media)
About this test
SOMEDIS-A was developed in 2021 by Paschke, Austermann, and Thomasius at the German Center for Addiction Research in Childhood and Adolescence (DZSKJ, University Medical Center Hamburg-Eppendorf) -- adapted from the same team's already-validated Gaming Disorder Scale for Adolescents (GADIS-A). It is the first screening instrument for problematic social media use built directly on the ICD-11 criteria for Gaming Disorder, rather than the DSM-5 Internet Gaming Disorder criteria used by older scales. It was validated in a representative German sample of 931 parent-adolescent pairs (adolescents aged 10-17), recruited through the market research institute forsa. The two-factor structure (cognitive-behavioral symptoms, negative consequences) showed good to excellent internal consistency and good criterion validity (associations with the Social Media Disorder Scale, the PHQ-9, and the Perceived Stress Scale).
Dimensions
Cognitive-Behavioral Symptoms
Sum across items 1, 2, 4, and 5 (0-16 points). Cutoff per the original study: > 8.
Negative Consequences
Sum across items 3, 6, 7, 8, and 9 (0-20 points). Cutoff per the original study: > 6.
Time Criterion
Value of the single timing item (0-3 points). Cutoff per the original study: >= 2.
Sources & license
Paschke, K., Austermann, M. I., & Thomasius, R. (2021). ICD-11-Based Assessment of Social Media Use Disorder in Adolescents: Development and Validation of the Social Media Use Disorder Scale for Adolescents. Frontiers in Psychiatry, 12, 661483.
This article and its supplementary material are published under the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and adaptation with attribution. Item wording is quoted verbatim from the official questionnaire published in the article's Supplementary Material. The cutoff values (cognitive-behavioral symptoms factor > 8 of 16, negative consequences factor > 6 of 20, time criterion >= 2 of 3) are taken directly from the study's own official scoring sheet.
https://doi.org/10.3389/fpsyt.2021.661483