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ObjectivesOur aim was to derive a short version of the Mobile Phone Problem Use Scale (MPPUS) using data from 412 adolescents of the Swiss HERMES (Health Effects Related to Mobile phonE use in adolescentS) cohort. MethodsA German version of the original MPPUS consisting of 27 items was shortened by principal component analysis (PCA) using baseline data collected in 2012. For confirmation the PCA was carried out again with follow-up data one year later. ResultsPCA revealed four factors related to symptoms of addiction("Loss of Control", "Withdrawal", "Negative Life Consequences" and "Craving") and a fifth factor reflecting the social component of mobile phone use ("Peer Dependence"). The shortened scale (MPPUS-10) highly reflects the original MPPUS (Kendalls' Tau: 0.80 with 90% concordant pairs). Internal consistency of MPPUS-10 was good with Cronbach's alpha: 0.85. The results were confirmed using the follow-up data. ConclusionsThe MPPUS-10 is a suitable instrument for research in adolescents. It will help to further clarify the definition of problematic mobile phone use in adolescents and explore similarities and differences to other technological addictions.

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