“…For example, the known prevalence rates based on a polythetic cut-off score of the Bergen Work Addiction Scale (which in the absence of the gold standard can be considered the most theoretically sound and empirically valid available cut-off) suggest 6.6% addicted in Denmark, 8.3% in a nationally representative sample in Norway, and 16.8% in Poland (Andreassen et al, 2014;Atroszko, Pallesen, Griffiths, & Andreassen, 2017;Lichtenstein, Malkenes, Sibbersen, & Hinze, 2019). The analogous cut-off score based on the Bergen Study Addiction Scale showed that the prevalence rate of study addiction in an online sample in Norway was 9.7%, and in convenience samples of students in Poland, rates varied from 6.4% in samples collected during classes at university to 14.2% in samples collected online (Atroszko, 2015), and 16.0% among students of music academies (Lawendowski, Bereznowski, Wróbel, Kierzkowski, & Atroszko, 2019). These differences in prevalence rates may be closely related to cultural factors and their interaction with socioeconomic conditions of particular countries, for example, an interaction of work ethic, consumer values and economic pressures (see Atroszko et al, 2019a).…”