“…The influence of gender, as a static (not-changeable, predisposing factor) on an individual's IU-PIU levels was investigated by 12 studies with only three of them not supporting gender-related IU-PIU differences (Gámez-Guadix, 2014;Gámez-Guadix et al, 2015;Jackson et al, 2003). The majority of the findings (7 studies) across different cultural samples converged with males being at higher risk, and the difference between males and females in regards to IU-PIU widening over time (Chen et al, 2015;Choo et al, 2015;Gentile et al, 2011;Haagsma et al, 2013;Hong et al, 2014;Willoughby, 2008;Yu & Shek, 2013). Different hypotheses and interacting factors were proposed to explain the differences revealed; primarily the higher preference of males for online games, males being targeted by the marketing strategies of higher PIU risk applications (such as online games) (Chen et al, 2015;Hong et al, 2014), and males being at higher risk of developing addiction-related behaviours (as PIU has been similarly characterized) (Yu & Shek, 2013) have been noted.…”