Psychometric Properties of the Metacognitions About Online Gaming Scale in the Chinese Population and Its Relationship With Internet Gaming Disorder: Cross-Sectional Study

Background: Metacognitions about online gaming have been shown to be correlated with Internet Gaming Disorder (IGD). Knowledge of metacognitions about online gaming can help to understand IGD. The Metacognitions about Online Gaming Scale (MOGS) is a reliable and valid tool to measure specific metacognitions about online gaming in both adults and adolescents, which is lacking in China. Objective: This study was conducted to assess the psychometric properties of the Chinese version of the MOGS (C-MOGS) and its relationship with IGD in the Chinese population. Methods: A total of 772 Chinese individuals (age: mean 21.70, SD 8.81 years; age range: 13-57 years; 458/772, 59.3% male) completed a web-based questionnaire survey, including the C-MOGS and a battery of validated scales measuring IGD, gaming motives, depression, and anxiety. Results: Through exploratory and confirmatory factor analyses, the 3-factor structure was confirmed to have adequate model fit and internal consistency reliability (Cronbach α≥ .799, Guttman split-half coefficients ≥ 0.754). Concurrent validity of the C-MOGS was supported by its correlations with IGD ( P <.001), gaming motives ( P <.001), depression ( P <.001), and anxiety ( P <.001). Furthermore, the incremental validity analysis showed that the C-MOGS predicted 13% of the variance in IGD while controlling for gender, age, weekly gaming hours, gaming motives, depression, and anxiety. Conclusions: This study provides evidence that the psychometric properties of the C-MOGS are appropriate and emphasizes its positive association with IGD. The C-MOGS is a reliable and valid instrument for mental health workers to assess metacognitions about online gaming in the Chinese population.


Introduction
Metacognition refers to the awareness of one's own thoughts and behaviors, as well as the ability to monitor and alter behavior.It encompasses any cognitive process that receives information from and exerts a controlling influence on another cognitive process [1][2][3][4].More specifically, it comprises metacognitive knowledge and metacognitive regulation.Metacognitive knowledge refers to information and beliefs about one's cognitive processes, while metacognitive regulation pertains to skills to regulate thoughts, including planning, supervision, and regulation [5].Metacognition contributes to effective decision-making across a variety of contexts [4].For instance, it facilitates the smooth operation of ongoing thought and behavior by helping us recognize our errors [6], regulate the deployment of executive function [7], and detect lapses of attention [8].Originating from cognitive psychology, metacognition has been linked to psychological disturbances [9,10].
In recent years, studies have highlighted the potential role of metacognitions in the development of addictive behaviors, such as problematic gaming behavior [11,12].However, due to the lack of suitable research instruments, conducting further investigations in China has been challenging.To address this issue, this study aimed to evaluate the validity of the Metacognitions about Online Gaming Scale (MOGS) [13] among the Chinese population and its association with gaming behavior.
According to the self-regulatory executive function model, metacognitions play a critical role in the occurrence and development of psychological dysfunction [14].In this model, psychological dysfunction is activated and perpetuated by a fixed thinking pattern called cognitive attentional syndrome (CAS), which comprises several maladaptive coping strategies (eg, rumination, threat-monitoring, and avoidance).The CAS is driven and maintained by maladaptive metacognitions [15].Maladaptive metacognitions mistakenly regard the CAS as an effective coping style, resulting in a vicious cycle of ineffective self-regulation [16].Over the last 40 years, metacognitions have been associated with several mental and psychological problems [17], such as obsessive-compulsive disorder, schizophrenia, addiction, anxiety, and depression [18][19][20].
In the domain of addictive behaviors, metacognitions are divided into 2 subtypes: positive and negative [21].The former refers to the beliefs that engaging in specific addictive behaviors is a strategy of affective and cognitive self-regulation, such as "Drinking helps me think more clearly" and "Gambling can improve my mood" [22,23].The latter refers to the concerns about the uncontrollability and danger of thoughts or engagement with addictive behaviors.For example, "Drinking will interfere with my thought" and "Once I start thinking about drinking, I cannot stop" [24].Previous studies have shown that positive metacognitions can motivate addictive behaviors in the early stage, while negative metacognitions contribute to their perpetuation by activating negative emotional states as a reinforcement [11,21].In recent years, metacognition has been correlated with many addictive behaviors, such as problematic alcohol use [25][26][27], nicotine dependence [28,29], gambling disorder [30][31][32], problematic Internet use [33][34][35], problematic social media use [36][37][38], and Internet Gaming Disorder (IGD; problematic online gaming) [39,40].
As an addictive behavior, IGD was first included in the research appendix section of the Fifth Edition of the Diagnostic and Statistical Manual of Mental Disorders (DSM-5) in 2013 [41], then it was officially included in the addiction disease unit of the Eleventh Revision of the International Classification of Diseases  in 2018 [42].Its core characteristics include losing control while gaming, prioritizing gaming over other interests, and causing functional damage in daily life.Excessive online gaming results in various problems, such as sacrificing real-life relationships, sleep, work, and education, leading to brain damage [43][44][45][46].According to a recent review, the global prevalence of IGD was 3.05%, and it was higher among Asians (5.08%) than Europeans (2.72%) [47].In China, the prevalence ranges from 3.5% to 17%, which is higher than the global average level [48][49][50].
In order to effectively prevent and treat this disorder, extensive research has been conducted to investigate its etiology.These studies have revealed a significant association between IGD and various psychological factors, including negative affect, gaming motives, and maladaptive cognition [51].The Interaction of Person-Affect-Cognition-Execution (I-PACE) model proposed by Brand et al [52,53] suggests that the initiation of addictive behaviors arise from the integration of emotional and cognitive responses to internal or external stimuli along with specific motivations.Motives are sets of knowledge that represent the emotional preferences expressed in our thoughts and concepts.Gaming motives could be considered as stimulating factors of gaming behavior, which may play an important role in the development of IGD [51].Furthermore, Spada et al [21] posited that the development and persistence of addictive behaviors, including IGD, are strongly influenced by particular metacognitions about addictive behaviors.
According to previous studies, metacognitions have been associated with IGD [38,39].However, these studies mainly focused on generic metacognitions (eg, beliefs about worry, cognitive monitoring, the need for thought suppression).To assess specific metacognitions about online gaming, Spada and Caselli [13] developed a self-rating instrument called the Metacognitions about Online Gaming Scale (MOGS).In the original validation of the MOGS, an exploratory factor analysis (EFA) was performed with 225 adults in Study 1 that suggested a 2-factor solution: Negative Metacognitions about Online Gaming (N-MOG; 6 items) and Positive Metacognitions about Online Gaming (P-MOG; 6 items) [13].The N-MOG assesses negative metacognitions about the uncontrollability and danger of thoughts on gaming.The P-MOG measures positive metacognitions in which online gaming helps individuals regulate affect and thought.In Study 2, the confirmatory factor analysis (CFA) with another sample of 348 individuals further divided N-MOG into 2 factors and built a 3-factor structure: Negative Metacognitions about the Uncontrollability of Online Gaming (N-MOGU), Negative Metacognitions about the Dangers of Online Gaming (N-MOGD), and P-MOG [13].All 3 factors reported adequate internal reliability (Cronbach α≥.79).

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While exploring predictive validity, the study showed that MOGS was positively related to gaming hours and Internet addiction [13].Overall, these findings demonstrated the reliability and validity of the MOGS.
To extend the utility of the MOGS to adolescent populations from other countries, Akbari et al [54] translated it into Persian and evaluated its psychometric properties among 769 Iranian adolescents.The results showed that the 3-factor structure had appropriate construct validity and internal consistency (Cronbach α≥.79).Furthermore, metacognitions about online gaming were able to independently predict problematic gaming behavior while controlling for personality traits, gaming motives, gaming-related cognitions, and negative affect [54].Another study investigating the association between IGD and social anxiety reported that metacognitions about online gaming were significantly correlated with IGD and mediated the latter's relationship with social anxiety [55].
These studies indicated an association between specific metacognitions about online gaming and IGD.Further exploration could be beneficial for the treatment and prevention of IGD, especially in countries with a higher prevalence, such as China.However, it is difficult to conduct relevant research in China because of the lack of instruments used to evaluate specific metacognitions.Therefore, the primary objective of this study was to translate the MOGS into Chinese and validate its psychometric properties among Chinese adolescent and adult gamers using online convenience sampling.Additionally, the study aimed to investigate the unique influence of metacognitions about online gaming on IGD while considering variables such as anxiety, depression, and motivation.The hypothesis was that, within the Chinese population, positive and negative metacognitions about online gaming would serve as independent risk factors for IGD, distinct from other contributing factors.

Participants
We recruited all individuals online through convenience sampling in June 2021.The inclusion criteria were as follows: (1) age ≥13 years, (2) Chinese speakers who could understand the questionnaires, (3) consent to participate (adolescents with parental consent), and (4) played games at least one hour every week (excluding online gambling) in the last 12 months.
In total, 996 individuals participated in this survey.We excluded 88 individuals whose answer was "No" to the item "Are your answers to this questionnaire true and reliable?",37 who gave the same answers to more than 50% of the questions and whose time spent on the questionnaire was less than the mean minus 3 SD, and 99 who were younger than 13 years old.The final sample included 772 participants.

Ethical Considerations
Before starting the anonymous online investigation, participants were informed about the purpose and rights of the study and signed an online informed consent form.Those younger than 18 years needed to inform their guardians and obtain consent before filling out the questionnaire.The ethics committee of the Second Xiangya Hospital of Central South University approved this study (protocol code 2020004; dated March 1, 2020).

Basic Information
Basic information included sociodemographic information and Internet gaming characteristics.The former included gender, age, employment, years of education, and family structure (eg, single-child family).For the latter, participants reported their average time spent gaming (weekly gaming hours), gaming devices (a multiple-choice question), the number of long-term gaming partners, and self-evaluation of gaming addiction.

Metacognitions About Online Gaming
Metacognitions about online gaming were measured using the MOGS [13], which contains 12 items rated on a 4-point Likert scale (1=Do not agree to 4=Agree very much).The MOGS comprises the following 3 factors: (1) N-MOGU (3 items, such as "Once I start online gaming I cannot stop"), ( 2) N-MOGD (3 items, such as "Online gaming makes me lose control"), and (3) P-MOG (6 items, such as "Online gaming stops me from worrying").A higher score indicates a higher degree of specific metacognition about online gaming.

IGD Symptoms
The severity of IGD symptoms was assessed using the Internet Gaming Disorder Scale-Short Form (IGDS9-SF) [56,57].The IGDS9-SF is a 9-item scale developed from the core symptoms of IGD proposed by the DSM-5 and assesses gaming activities and their adverse effects in the past 12 months.All items are rated on a 5-point Likert scale (1=never to 5=very often).The scores range from 9 to 45. Higher scores represent more severe IGD symptoms.With adequate reliability (Cronbach α≥.9), the Chinese version of the IGDS9-SF was used in our research [58,59].The Cronbach α was .90 in this study.

Gaming Motives
We assessed gaming motives using the Motives for Online Gaming Questionnaire (MOGQ) [60].It includes 27 items comprising the following 7 motivational dimensions (all rated on a 4-point Likert scale): escape, skill development, recreation, competition, coping, fantasy, and social.The Chinese version of the MOGQ has excellent reliability (Cronbach α≥.83) and validity [61].Higher scores reflect stronger motives for online gaming.In this study, the Cronbach α was .95 for the total scale and ranged from 0.84 to 0.89 for each subscale.

Depression and Anxiety
The Patient Health Questionnaire-9 (PHQ-9) [62] was used to measure depressive symptoms.It is a diagnostic screening tool that monitors the severity of depression over the last 2 weeks.All items are scored on a 4-point Likert scale (0=Not at all to 3=Nearly every day).The scores range from 0 to 27.Higher scores denote worse depressive symptoms.The Chinese version of the PHQ-9 [63] has suitable reliability (Cronbach α=.85).The Cronbach α was .89for this study.
The Generalized Anxiety Disorder-7 (GAD-7) [64] was used to measure anxiety symptoms.It is a self-rated scale that assesses the severity of anxiety symptoms over the last 2 weeks.All items are scored on a 4-point Likert scale (0=Not at all to 3=Nearly every day).The scores range from 0 to 21.Higher scores represent worse anxiety symptoms.The Chinese version of the GAD-7 [65] was used, with appropriate internal consistency (Cronbach α=.90) and validity.The Cronbach α was .92 for this study.

Procedures
The MOGS was translated into Chinese by 2 professional translators using a standard translation and back-translation method [66].For some controversial items (eg, "Online gaming makes me lose control," "Online gaming makes my worries more bearable"), we consulted the author of the original scale.Considering the original scale, 2 bilingual psychologists revised the translated version and checked its face validity.A pilot study was conducted with 5 adults and 5 adolescents to test the understandability.Based on their feedback, some descriptions of items were modified, and the final Chinese version of the MOGS (C-MOGS) was created.
We conducted this survey online using Questionnaire Star, a professional online survey platform.By reading recruitment advertisements posted on social networking sites (eg, WeChat, Weibo, and other webcast platforms), individuals could open the questionnaire link.On the first page, participants could read the objectives and content of this research and confirm their participation (minors, those younger than 18 years, had to obtain the consent of their guardian).Each IP address can only be used once to avoid repeated participation.After the questionnaire was submitted, all the data were sent to the researcher's account, and only the researcher could view the data.

Data Analyses
Data analyses were conducted using SPSS version 25 33-.88).An EFA with principal component analysis (PCA) and varimax-rotation method was conducted on the C-MOGS items.To validate the models derived from the EFA, a CFA was completed with AMOS 24.0 using the maximum likelihood method.The model fit was appraised using multiple fit indexes, including chi-squared:degree of freedom ratio (χ 2 /df<5), goodness-of-fit index (GFI>0.90),Tucker-Lewis Index (TLI>0.90),comparative fit index (CFI>0.90),standardized root of the mean square residual (SRMR<0.08),root mean square error of approximation (<0.05=close fit; <0.08=acceptable fit; <0.1=mediocre fit) [67].The reliability of the C-MOGS was examined by assessing the internal consistency of the scale and subscale.Acceptable values for the Cronbach α and Guttman split-half coefficients are >0.70,while values >0.80 are considered good [68].Finally, to test the concurrent and incremental validity, correlation analyses and hierarchical multiple regression analyses were conducted between the C-MOGS and Internet gaming characteristics (gaming time, IGD, gaming motives) as well as anxiety and depression.

EFA
To identify the potential factorial structure of the C-MOGS, an EFA was performed on data from sample-1 (n=390).First, we used the Kaiser-Meyer-Olkin (KMO) and Bartlett tests of sphericity to ensure that the sample was suitable for EFA.The KMO value was 0.894, and the Bartlett test of sphericity was significant (χ 2  66 =3159.742,P<.001), confirming the data were sufficient.
The initial analysis extracted 2 factors using the criteria of an eigenvalue>1 and factor loading>0.40.The 2-factor solution (eigenvalues of 5.573 and 2.597) accounted for 68.08% of the total variance, and the loading of all the items was >0.4 (0.646-0.918;Table 2).Factor 1 included items 1 through 6, referred to as the N-MOG; factor 2 included items 7 through 12, which described the P-MOG.
c Positive Metacognitions about Online Gaming (P-MOG).
d Negative Metacognitions about the Uncontrollability of Online Gaming (N-MOGU).
e Negative Metacognitions about the Dangers of Online Gaming (N-MOGD).
Due to the high correlation between the 2 negative metacognitive factors, we also created a bifactor model (Figure 1), in which N-MOGU and N-MOGD loaded on a second-order factor (N-MOG) and P-MOG was a first-order factor.In this model, the goodness of model fit was the same as that of the 3-factor model (Table 3), and the correlation between N-MOG and P-MOG was moderate (r=0.396).

Reliability
The Cronbach α coefficient and split-half reliability were calculated for the scale and its subscales in the total sample (n=772).The α coefficient for the total scale was .894,and it was .823for the N-MOGU, .799for the N-MOGD, and .925for the P-MOG.No item deletion improved the internal consistency.The Guttman split-half coefficient of the overall scale was 0.942, and for each dimension, the coefficients were 0.776, 0.754, and 0.841.These findings confirmed that the C-MOGS and its subscales exhibit adequate internal consistency.
Moreover, we calculated the correlation coefficient between each item and its relative factor scores.The results showed that the item-total correlations for all items were high (r≥0.551).

Concurrent Validity
We further analyzed the correlation between the 3 factors of the C-MOGS and IGD, gaming motives, anxiety, and depression to test the concurrent validity.Based on the Shapiro-Wilk test, these variables did not follow a normal distribution (all Ps<.05).Therefore, Spearman correlation analysis was chosen to explore the relationships between the variables.Table 4 shows the descriptive statistics (median and IQR), and Table 5 shows the correlations between the variables.Each factor of the C-MOGS showed positive correlations with the IGDS9-SF, weekly gaming hours, every dimension of the MOGQ, the PHQ-9, and the GAD-7 (r=0.153 to 0.759, all Ps<.01).Moreover, the correlation matrix showed positive correlations between the IGDS9-SF and the other variables (r=0.352 to 0.700, all Ps<.01).

Incremental Validity
We conducted a hierarchical multiple linear regression analysis to identify the incremental effect of metacognitions about online gaming on IGD.The IGDS9-SF was the outcome variable, and the 3 factors of the C-MOGS were predictor variables, along with other variables related to the IGDS9-SF (gender, weekly gaming hours, the 7 factors of the MOGQ, and the total PHQ-9 and GAD-7 scores).Each variable was input in the following order: step 1: age and gender (0=female, 1=male); step 2: weekly gaming hours; step 3: the 7 factors of the MOGQ; step 4: GAD-7, PHQ-9; step 5: the 3 dimensions of the C-MOGS.
The Durbin-Watson statistic showed that the observed values were independent of each other (D-W=2.077).All tolerance values were above 0.1 (0.180-0.878), indicating no multicollinearity.The results are presented in Table 6.The 3 factors of the C-MOGS accounted for 13.0% of the variance in the IGDS9-SF (P<.001).In step 5, the final model indicated that gender, weekly gaming hours, the PHQ-9 score, the MOGQ-Escape score, the MOGQ-Competition score, and the factors of the C-MOGS were significant positive predictors of the IGDS9-SF (R 2 =0.729,P<.001, adjusted R 2 =0.724), and the most important predictor was the N-MOGU (β=0.326,P<.001).h PHQ-9: Patient Health Questionnaire-9.

Principal Findings
To investigate the psychometric properties of the Chinese MOGS and its association with IGD, this study translated and tested it in China for the first time.In general, the results suggested that the C-MOGS could potentially serve as a valid and reliable tool to assess specific metacognitions about online gaming and it may have the capacity to predict IGD independently.
First, factor analyses were used to explore the structural validity of the scale.The EFA suggested a 2-factor solution (N-MOG and P-MOG), which was consistent with the first assumption of the original scale [13].By setting 3 factors to be extracted, the EFA also obtained the same 3-factor solution as the final version of the original scale (N-MOGU, N-MOGD, and P-MOG) [13,54].Through CFA, the 3-factor model was later proved to have the best data fit.Moreover, we attempted to build a bifactor model that included a first-order factor (P-MOG) and a second-order factor (N-MOG: N-MOGU and N-MOGD).This model had the same goodness of model fit as the 3-factor structure.To maintain consistency with the original scale, the 3-factor structure is recommended for measuring specific online gaming metacognitions in the Chinese population.For studies that compare N-MOG and P-MOG, the bifactor model can be considered.
The 3-factor structure of the C-MOGS demonstrated adequate internal consistency, with Cronbach α coefficients ranging from .799 to .925 for each factor and the full scale, along with Guttman split-half coefficients ranging from 0.754 to 0.942.The current findings also provide evidence for the concurrent and incremental validity of the C-MOGS.Each subscale was significantly positively correlated with IGD, weekly gaming hours, gaming motives, depression, and anxiety.Moreover, the C-MOGS accounted for 13.0% of the variance in IGD while controlling for other variables.These findings highlight the utility of the C-MOGS as a reliable and valid tool to assess metacognitions about online gaming among the Chinese population.
Furthermore, this study explored the effects of metacognitions about online gaming, gaming motives, anxiety, and depression on IGD using hierarchical multiple linear regression analysis.After adding metacognitions about online gaming to the regression equations, the final model accounted for 72.9% of the variance in IGD.In addition to metacognitions, gender, weekly gaming hours, escapism motives, competition motives, and depression significantly predicted IGD, suggesting that these factors collectively contribute to the development and maintenance of IGD [69][70][71].Importantly, the inclusion of metacognitions led to a reduction in the standardized regression coefficients of these variables, and the predictive effect of anxiety on IGD became nonsignificant.This indicates that metacognition may partially mediate or explain the impact of these factors on IGD.This finding is consistent with previous research, suggesting that metacognitions about online gaming may mediate the influence of other psychological factors, such as psychological dependence, anxiety, and depression, on IGD [55,[72][73][74][75].These results indicate that specific metacognitions about online gaming are important predictors of IGD, which is consistent with previous studies [13,54,55].However, the mechanisms underlying the role of metacognitions in IGD seem to be interrelated with other psychological factors, which remains inconclusive.
In a hypothesized model, metacognitions about online gaming may promote problematic gaming engagement by increasing gaming time and disrupting normal emotion and cognition [76].Consistent with this view, our study found that people with more metacognitions about online gaming would spend more time playing games and feel more anxious and depressed.P-MOG increases gaming time by promoting online gaming as a self-regulation method for emotion and cognition [13,21].N-MOGU will maintain problematic gaming engagement by destroying one's confidence in self-control, while N-MOGD can induce negative reinforcement and compulsive gaming engagement by triggering negative emotions such as anxiety and depression [21,76].Furthermore, gaming motives may be an intermediate factor, as our study found: Gaming motives were simultaneously significantly correlated with MOGS and IGD.Dysfunctional metacognition activates maladaptive coping strategies and motivation, which causes negative emotions to persist and eventually leads to IGD [77].Moreover, other studies have different views.For example, metacognitions have a mediating effect on the association between emotional dysregulation and problematic Internet use [78], and online gaming thought suppression and impulsiveness mediate the relationship between metacognition and IGD [79].Therefore, the association between metacognition and IGD cannot be summarized by simple causality.Other psychological variables, such as motives, coping style, impulsiveness, and emotional regulation, should be considered in future research.
Since maladaptive metacognitions are an important predictor of IGD, interventions specifically addressing maladaptive metacognitions, such as metacognition therapy (MCT), may be beneficial for the prevention and treatment of IGD.MCT, an intervention aimed at modifying dysfunctional metacognition, is effective for treating psychiatric and psychological diseases such as anxiety, depression, and schizophrenia [80][81][82][83][84].Although MCT is not widely used in the treatment of addictive behaviors, researchers are attempting to prove its efficacy [11].In some pilot studies, MCT was used to effectively treat alcohol abuse and gambling disorder [85,86].However, the specific efficacy of MCT for treating IGD needs to be further verified in clinical research.This study provides evidence for the potential value of MCT in the clinical treatment of IGD and offers an effective tool for conducting MCT for IGD specifically in the Chinese population.

Limitations
Although this study has the advantages of a large sample size with people of different ages, it has several limitations that should be considered.First, this study adopted convenience sampling instead of random sampling, and only gamers were included.Therefore, it does not sufficiently represent all Chinese people.Second, collecting data using an online self-report questionnaire may increase the probability of participants giving false answers.However, this procedure is reported to be as reliable as pencil-and-paper surveys [87], which is likely to reduce social desirability and increase levels of honesty [88].Third, this study lacked test-retest reliability of the C-MOGS; further research is required to test its stability.Finally, as a cross-sectional study, we could not infer the causality of the studied variables.Thus, longitudinal research is needed to further explore the relationship between metacognition and IGD.

Conclusion
In summary, this study offers some evidence that supports the satisfactory psychometric properties of the C-MOGS and highlights the possibility of metacognition as an independent risk factor in gaming behavior.It may be a useful and prospective tool for exploring psychological mechanisms of IGD and helping health professionals identify risky gamers (eg, individuals with more metacognitions about online gaming, specifically negative metacognitions about the uncontrollability of online gaming).Additionally, MCT may be beneficial for the prevention and treatment of IGD.This study may support more attention for metacognitive beliefs in addictive behaviors.

b
CFI: comparative fit index.

c
TLI: Tucker-Lewis Index.dSRMR: standardized root of the mean square residual.
e RMSEA: root mean square error of approximation.

Figure 1 .
Figure 1.The bifactor model of the Chinese version of the Metacognitions about Online Gaming Scale (C-MOGS), showing the latent factors as ovals, the 12 items in the C-MOGS as rectangles, the error terms (e1-e14) as circles, and the standardized factor loading above the arrows.N-MOG: Negative Metacognitions about Online Gaming; N-MOGD: Negative Metacognitions about the Dangers of Online Gaming; N-MOGU: Negative Metacognitions about the Uncontrollability of Online Gaming; P-MOG: Positive Metacognitions about Online Gaming.
SF: Internet Gaming Disorder Scale-Short Form.b WGH: weekly gaming hours (average time).c PHQ-9: Patient Health Questionnaire-9.d GAD-7: Generalized Anxiety Disorder-7.e N-MOGU: Metacognitions about the Uncontrollability of Online Gaming.f N-MOGD: Negative Metacognitions about the Dangers of Online Gaming.g P-MOG: Positive Metacognitions about Online Gaming.
b WGH: weekly gaming hours (average time).cMotives for Online Gaming Questionnaire.d PHQ-9: Patient Health Questionnaire-9.e GAD-7: Generalized Anxiety Disorder-7.f N-MOGU: Metacognitions about the Uncontrollability of Online Gaming.g N-MOGD: Negative Metacognitions about the Dangers of Online Gaming.h P-MOG: Positive Metacognitions about Online Gaming.i Not applicable.
j N-MOGU: Metacognitions about the Uncontrollability of Online Gaming.k N-MOGD: Negative Metacognitions about the Dangers of Online Gaming.l P-MOG: Positive Metacognitions about Online Gaming.
SD 8.52 years) was used for CFA.Except for EFA and CFA, all analyses were conducted on data from the entire sample.Independent samples t tests and chi-square tests showed that there were no significant differences between the 2 subsamples regarding age (t 770 =-1.754,P=.08), gender

Table 1 .
Sociodemographic and Internet gaming characteristics of the sample (n=772).

Table 2 .
Item-factor loadings of the Chinese version of the Metacognitions about Online Gaming Scale (C-MOGS) based on exploratory factor analyses (sample-1, n=390).
a Negative Metacognitions about Online Gaming (N-MOG).

Table 3 .
Model fit indices of the confirmatory factor analyses for the Chinese version of the Metacognitions about Online Gaming Scale (C-MOGS; Sample 2, n=382).
d e g Not applicable.