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• Reducing gaming time may induce resource losses in adolescents. • An assessment tool of perceived personal and interpersonal resource losses due to reduction of gaming time (RL-RGTS) was developed. • The RL-RGTS demonstrated some satisfactory psychometric properties. • The RL-RGTS could be applied to understand potential obstacles against interventions reducing internet gaming disorder. Adolescent internet gaming disorder (IGD) is prevalent and positively associated with gaming time, a reduction of which is a common means of IGD prevention/treatment. Personal/interpersonal resource losses due to the reduction in gaming time (RL-RGT) are plausible. According to the Conservation of Resource (COR) theory, RL-RGT may cause mental distress and maladaptive behaviors. No study has investigated such relationships, partially due to the lack of validated tools assessing RL-RGT. This study aimed to develop and validate such a scale (RL-RGTS). A cross-sectional survey was conducted in four secondary schools in Guangzhou, China (October to December 2019). Secondary school students who had played internet games in the last 12 months participated in this study (n = 944), irrespective of their IGD status and intention to reduce gaming time. Using a deductive approach, an expert panel generated the 19 scale items. The half-split method was used to conduct exploratory and confirmatory factor analyses. The prevalence of IGD and intention to reduce gaming time were 10.9% and 74.2%, respectively. The exploratory and confirmatory factor analyses identified a 2-factor model (personal loss and interpersonal loss). Psychometric properties (internal consistency, no ceiling effect, and concurrent validity) were satisfactory, but noticeable floor effects were observed. The RL-RGTS could be applied to understand potential side effects and obstacles regarding interventions reducing IGD through reducing gaming time. The findings support the COR theory and extend its applications to internet gaming research. Validations in other populations are warranted. [ABSTRACT FROM AUTHOR]

The significance of Internet gaming time's dosage effect on Internet gaming disorder (IGD) may depend on gamers' characteristics. Majority of the gamers with extensive gaming time do not develop IGD. This study investigated moderation effects of cognitive/psychosocial factors on the association between Internet gaming time and probable IGD among adolescent Internet gamers in China. The cross-sectional, self-administered, and anonymous survey was conducted from October to December of 2018 among seven conveniently selected secondary school students in Chengdu and Guangzhou, China. Probable IGD was measured by using the DSM-5 checklist. The cognitive/psychosocial moderators were assessed by using validated instruments. Of the 2,503 students who had played Internet games (past 12 months), the prevalence of probable IGD was 17.7%. Internet gaming time [adjusted odds ratio (ORa) = 1.06], the three maladaptive cognitions specific to Internet gaming (perceived overvaluation of rewards, perceived urges, and perceived unwillingness to stop playing) (ORa = 1.17 to 1.44), and the two types of psychosocial factors (loneliness and social anxiety) (ORa = 1.09 to 1.13) were independent risk factors of probable IGD. Moderation analyses showed that overall maladaptive cognitions, perceived urges, and loneliness (but not the other two types of cognitions and social anxiety) were significant moderators of the association between Internet gaming time and probable IGD. The dose-effect relationship of Internet gaming time on probable IGD was significantly and slightly stronger among those with higher levels of perceived urges and loneliness. Interventions to reduce the levels of such moderators may reduce probable IGD directly and buffer the dosage effect among adolescents. [ABSTRACT FROM AUTHOR]

Background: The Eleventh Revision of International Classification of Diseases (ICD-11) newly listed gaming disorder, including internet gaming disorder (IGD), as a disease. The level of awareness and potential positive and negative impacts of this medicalization among adolescents were unknown.Objective: This study investigated the levels, associated factors, and potential positive and negative impacts of awareness of the medicalization of IGD among adolescents in China.Methods: In a cross-sectional survey, 1343 middle school students in Guangzhou, China, self-administered an anonymous questionnaire in classrooms (October to December 2019). Three risk subgroups were identified: those who scored ≥5 items in the Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition checklist (IGD-S), those who self-perceived having IGD currently (IGD-PC), and those who self-perceived having IGD within 12 months (IGD-P12M).Results: Of the internet gamers, 48.3% (460/952) were aware of the medicalization of IGD; they were more likely to belong to the IGD-P12M/IGD-S risk subgroups. Within the IGD-PC/IGD-P12M (but not IGD-S) risk subgroups, IGD medicalization awareness was positively associated with favorable outcomes (reduced internet gaming time in the past 12 months, seeking help from professionals if having IGD, and fewer maladaptive cognitions). After being briefed about the ICD-11 inclusion of IGD, 54.2% (516/952) and 32.8% (312/952) expressed that it would lead to the reduction of gaming time and help-seeking behaviors, respectively; however, 17.9% (170/952), 21.5% (205/952), 15.9% (151/952), and 14.5% (138/952) perceived self-doubt for being diseased, stronger pressure from family members, negative emotional responses, and labeling effect, respectively. With a few exceptions, such perceived positive or negative impacts were stronger among the IGD-S, IGD-PC, and IGD-P12M risk subgroups.Conclusions: The exploratory study shows that the medicalization of IGD may have benefits that need maximization and potentially harmful effects that need minimization. Future studies should test the efficacies of health promotion that increases IGD medicalization awareness. [ABSTRACT FROM AUTHOR]

Background: Adolescent males were consistently reported to have a higher prevalence of Internet gaming disorder (IGD) than females. The mechanisms underlying the sex difference were potentially important for designing sex-specific interventions but were under-researched. Maladaptive cognitions were potential mediators between sex and adolescent IGD, as they were positively associated with both sex and adolescent IGD.Methods: A total of 3,075 students participated in a cross-sectional survey that was conducted in Guangzhou and Chengdu, China. IGD was measured by using the DSM-5 checklist and maladaptive cognitions were measured by the validated Chinese version of Revised Internet Gaming Cognition Scale (C-RIGCS). Structural equation modeling was used to test the mediation hypotheses.Results: Adolescent males showed a significantly higher prevalence of IGD than females (19.2% versus 7.8%, p < .05). Significant positive associations were found between sex and both maladaptive cognitions and IGD. The sex difference in IGD prevalence was partially mediated by the overall scale of C-RIGCS and its three subscales (i.e., perceived overvaluation of rewards of Internet gaming, perceived urges for playing Internet games, and perceived unwillingness to stop playing without completion of gaming tasks), with large mediation effect sizes ranging from 35.0% to 60.0% (Sobel test, p < ,01).Conclusions: The higher levels of maladaptive cognitions among adolescent males explained a relatively large part of the substantially higher prevalence of IGD among adolescent males than females. Interventions targeting adolescent males may consider modifying such cognitions to reduce their IGD. [ABSTRACT FROM AUTHOR]