@article{MTMT:3087680,
	title = {Validation of the Ten-Item Internet Gaming Disorder Test (IGDT-10) and evaluation of the nine DSM-5 Internet Gaming Disorder criteria.},
	url = {https://m2.mtmt.hu/api/publication/3087680},
	author = {Király, Orsolya and Sleczka, P and Pontes, HM and Urbán, Róbert and Griffiths, MD and Demetrovics, Zsolt},
	doi = {10.1016/j.addbeh.2015.11.005},
	journal-iso = {ADDICT BEHAV},
	journal = {ADDICTIVE BEHAVIORS},
	volume = {64},
	unique-id = {3087680},
	issn = {0306-4603},
	abstract = {INTRODUCTION: The inclusion of Internet Gaming Disorder (IGD) in the DSM-5 (Section 3) has given rise to much scholarly debate regarding the proposed criteria and their operationalization. The present study's aim was threefold: to (i) develop and validate a brief psychometric instrument (Ten-Item Internet Gaming Disorder Test; IGDT-10) to assess IGD using definitions suggested in DSM-5, (ii) contribute to ongoing debate regards the usefulness and validity of each of the nine IGD criteria (using Item Response Theory [IRT]), and (iii) investigate the cut-off threshold suggested in the DSM-5. METHODS: An online gamer sample of 4887 gamers (age range 14-64years, mean age 22.2years [SD=6.4], 92.5% male) was collected through Facebook and a gaming-related website with the cooperation of a popular Hungarian gaming magazine. A shopping voucher of approx. 300 Euros was drawn between participants to boost participation (i.e., lottery incentive). Confirmatory factor analysis and a structural regression model were used to test the psychometric properties of the IGDT-10 and IRT analysis was conducted to test the measurement performance of the nine IGD criteria. Finally, Latent Class Analysis along with sensitivity and specificity analysis were used to investigate the cut-off threshold proposed in the DSM-5. RESULTS: Analysis supported IGDT-10's validity, reliability, and suitability to be used in future research. Findings of the IRT analysis suggest IGD is manifested through a different set of symptoms depending on the level of severity of the disorder. More specifically, "continuation", "preoccupation", "negative consequences" and "escape" were associated with lower severity of IGD, while "tolerance", "loss of control", "giving up other activities" and "deception" criteria were associated with more severe levels. "Preoccupation" and "escape" provided very little information to the estimation IGD severity. Finally, the DSM-5 suggested threshold appeared to be supported by our statistical analyses. CONCLUSIONS: IGDT-10 is a valid and reliable instrument to assess IGD as proposed in the DSM-5. Apparently the nine criteria do not explain IGD in the same way, suggesting that additional studies are needed to assess the characteristics and intricacies of each criterion and how they account to explain IGD.},
	year = {2017},
	eissn = {1873-6327},
	pages = {253-260},
	orcid-numbers = {Király, Orsolya/0000-0001-9981-4212; Urbán, Róbert/0000-0002-2058-5937; Demetrovics, Zsolt/0000-0001-5604-7551}
}

@article{MTMT:3057447,
	title = {The Relationship Between Addictive Use of Social Media and Video Games and Symptoms of Psychiatric Disorders: A Large-Scale Cross-Sectional Study},
	url = {https://m2.mtmt.hu/api/publication/3057447},
	author = {Andreassen, CS and Billieux, J and Griffiths, MD and Kuss, DJ and Demetrovics, Zsolt and Mazzoni, E and Pallesen, S},
	doi = {10.1037/adb0000160},
	journal-iso = {PSYCHOL ADDICT BEHAV},
	journal = {PSYCHOLOGY OF ADDICTIVE BEHAVIORS},
	volume = {30},
	unique-id = {3057447},
	issn = {0893-164X},
	abstract = {Over the last decade, research into "addictive technological behaviors" has substantially increased. Research has also demonstrated strong associations between addictive use of technology and comorbid psychiatric disorders. In the present study, 23,533 adults (mean age 35.8 years, ranging from 16 to 88 years) participated in an online cross-sectional survey examining whether demographic variables, symptoms of attention-deficit/hyperactivity disorder (ADHD), obsessive-compulsive disorder (OCD), anxiety, and depression could explain variance in addictive use (i.e., compulsive and excessive use associated with negative outcomes) of two types of modern online technologies: social media and video games. Correlations between symptoms of addictive technology use and mental disorder symptoms were all positive and significant, including the weak interrelationship between the two addictive technological behaviors. Age appeared to be inversely related to the addictive use of these technologies. Being male was significantly associated with addictive use of video games, whereas being female was significantly associated with addictive use of social media. Being single was positively related to both addictive social networking and video gaming. Hierarchical regression analyses showed that demographic factors explained between 11 and 12% of the variance in addictive technology use. The mental health variables explained between 7 and 15% of the variance. The study significantly adds to our understanding of mental health symptoms and their role in addictive use of modern technology, and suggests that the concept of Internet use disorder (i.e., "Internet addiction") as a unified construct is not warranted.},
	keywords = {DEPRESSION; anxiety; ADHD; ATTENTION-DEFICIT; COMORBIDITY SURVEY REPLICATION; DEFICIT-HYPERACTIVITY DISORDER; BEHAVIORAL ADDICTIONS; ADULT ADHD; DSM-IV DISORDERS; ONLINE GAMING ADDICTION; PROBLEMATIC INTERNET USE; OBSESSIVE-COMPULSIVE INVENTORY; SELF-REPORT SCALE; online social networking addiction; internet gaming disorder},
	year = {2016},
	eissn = {1939-1501},
	pages = {252-262},
	orcid-numbers = {Demetrovics, Zsolt/0000-0001-5604-7551}
}

@article{MTMT:2979755,
	title = {Working towards an international consensus on criteria for assessing Internet Gaming Disorder. A critical commentary on Petry et al.},
	url = {https://m2.mtmt.hu/api/publication/2979755},
	author = {Griffiths, M D and Van Rooij, A and Kardefelt-Winther, D and Starcevic, V and Király, Orsolya and Pallesen, S and Müller, K W and Dreier, M and Carras, M and Prause, N and King, D L and Aboujaoude, E and Kuss, D J and Pontes, H M and Fernandez, O L and Nagygyörgy, Katalin and Achab, S and Billieux, J and Quandt, T and Carbonell, X and Ferguson, C J and Hoff, R A and Derevensky, J and Haagsma, M C and Delfabbro, P and Coulson, M and Hussain, Z and Demetrovics, Zsolt},
	doi = {10.1111/add.13057},
	journal-iso = {ADDICTION},
	journal = {ADDICTION},
	volume = {111},
	unique-id = {2979755},
	issn = {0965-2140},
	year = {2016},
	eissn = {1360-0443},
	pages = {165-175},
	orcid-numbers = {Király, Orsolya/0000-0001-9981-4212; Demetrovics, Zsolt/0000-0001-5604-7551}
}

@article{MTMT:2891720,
	title = {The Mediating Effect of Gaming Motivation Between Psychiatric Symptoms and Problematic Online Gaming: An Online Survey},
	url = {https://m2.mtmt.hu/api/publication/2891720},
	author = {Király, Orsolya and Urbán, Róbert and Griffiths, Mark D and Ágoston, Csilla and Nagygyörgy, Katalin and Kökönyei, Gyöngyi and Demetrovics, Zsolt},
	doi = {10.2196/jmir.3515},
	journal-iso = {J MED INTERNET RES},
	journal = {JOURNAL OF MEDICAL INTERNET RESEARCH},
	volume = {17},
	unique-id = {2891720},
	issn = {1438-8871},
	year = {2015},
	orcid-numbers = {Király, Orsolya/0000-0001-9981-4212; Urbán, Róbert/0000-0002-2058-5937; Ágoston, Csilla/0000-0002-5229-9345; Kökönyei, Gyöngyi/0000-0001-6750-2644; Demetrovics, Zsolt/0000-0001-5604-7551}
}

@article{MTMT:2541144,
	title = {DSM-5 internet gaming disorder needs a unified approach to assessment},
	url = {https://m2.mtmt.hu/api/publication/2541144},
	author = {Griffiths, MD and King, DL and Demetrovics, Zsolt},
	doi = {10.2217/NPY.13.82},
	journal-iso = {NEUROPSYCHIATRY-LOND},
	journal = {NEUROPSYCHIATRY},
	volume = {4},
	unique-id = {2541144},
	issn = {1758-2008},
	keywords = {addiction},
	year = {2014},
	eissn = {1758-2016},
	pages = {1-4},
	orcid-numbers = {Demetrovics, Zsolt/0000-0001-5604-7551}
}

@article{MTMT:3388826,
	title = {Pathological Internet use among European adolescents: psychopathology and self-destructive behaviours},
	url = {https://m2.mtmt.hu/api/publication/3388826},
	author = {Kaess, M and Durkee, T and Brunner, R and Carli, V and Parzer, P and Wasserman, C and Sarchiapone, M and Hoven, C and Apter, A and Balázs, Judit and Balint, M and Bobes, J and Cohen, R and Cosman, D and Cotter, P and Fischer, G and Floderus, B and Iosue, M and Haring, C and Kahn, JP and Musa, GJ and Nemes, B and Postuvan, V and Resch, F and Saiz, PA and Sisask, M and Snir, A and Varnik, A and Ziberna, J and Wasserman, D},
	doi = {10.1007/s00787-014-0562-7},
	journal-iso = {EUR CHILD ADOLES PSY},
	journal = {EUROPEAN CHILD & ADOLESCENT PSYCHIATRY},
	volume = {23},
	unique-id = {3388826},
	issn = {1018-8827},
	abstract = {Rising global rates of pathological Internet use (PIU) and related psychological impairments have gained considerable attention in recent years. In an effort to acquire evidence-based knowledge of this relationship, the main objective of this study was to investigate the association between PIU, psychopathology and self-destructive behaviours among school-based adolescents in eleven European countries. This cross-sectional study was implemented within the framework of the European Union project: Saving and Empowering Young Lives in Europe. A representative sample of 11,356 school-based adolescents (M/F: 4,856/6,500; mean age: 14.9) was included in the analyses. PIU was assessed using the Young's Diagnostic Questionnaire. Psychopathology was measured using the Beck Depression Inventory-II, Zung Self-Rating Anxiety Scale and Strengths and Difficulties Questionnaire. Self-destructive behaviours were evaluated by the Deliberate Self-Harm Inventory and Paykel Suicide Scale. Results showed that suicidal behaviours (suicidal ideation and suicide attempts), depression, anxiety, conduct problems and hyperactivity/inattention were significant and independent predictors of PIU. The correlation between PIU, conduct problems and hyperactivity/inattention was stronger among females, while the link between PIU and symptoms of depression, anxiety and peer relationship problems was stronger among males. The association between PIU, psychopathology and self-destructive behaviours was stronger in countries with a higher prevalence of PIU and suicide rates. These findings ascertain that psychopathology and suicidal behaviours are strongly related to PIU. This association is significantly influenced by gender and country suggesting socio-cultural influences. At the clinical and public health levels, targeting PIU among adolescents in the early stages could potentially lead to improvements of psychological well-being and a reduction of suicidal behaviours.},
	keywords = {PREVALENCE; DEPRESSION; questionnaire; RANDOMIZED CONTROLLED-TRIAL; GENDER-DIFFERENCES; ONLINE; addiction; Psychopathology; Suicidal ideation; SEYLE; Internet addiction; Suicidal behaviour; EMPOWERING YOUNG LIVES; internet gaming disorder; pathological Internet use; INJURIOUS-BEHAVIOR},
	year = {2014},
	eissn = {1435-165X},
	pages = {1093-1102},
	orcid-numbers = {Balázs, Judit/0000-0001-6397-1419}
}

@article{MTMT:1961588,
	title = {The development of the Problematic Online Gaming Questionnaire (POGQ)},
	url = {https://m2.mtmt.hu/api/publication/1961588},
	author = {Demetrovics, Zsolt and Urbán, Róbert and Nagygyörgy, Katalin and Farkas, Judit and Griffiths, M.D. and Király, Orsolya and Kökönyei, Gyöngyi and Felvinczi, Katalin and Oláh, Attila},
	doi = {10.1371/journal.pone.0036417},
	journal-iso = {PLOS ONE},
	journal = {PLOS ONE},
	volume = {7},
	unique-id = {1961588},
	issn = {1932-6203},
	year = {2012},
	eissn = {1932-6203},
	pages = {e36417},
	orcid-numbers = {Demetrovics, Zsolt/0000-0001-5604-7551; Urbán, Róbert/0000-0002-2058-5937; Farkas, Judit/0000-0002-2450-0355; Király, Orsolya/0000-0001-9981-4212; Kökönyei, Gyöngyi/0000-0001-6750-2644; Felvinczi, Katalin/0000-0003-1813-7227; Oláh, Attila/0000-0001-9483-1347}
}

@article{MTMT:1973403,
	title = {Prevalence of pathological Internet use among adolescents in Europe: demographic and social factors.},
	url = {https://m2.mtmt.hu/api/publication/1973403},
	author = {Durkee, T and Kaess, M and Carli, V and Parzer, P and Wasserman, C and Floderus, B and Apter, A and Balázs, Judit and Barzilay, S and Bobes, J and Brunner, R and Corcoran, P and Cosman, D and Cotter, P and Despalins, R and Graber, N and Guillemin, F and Haring, C and Kahn, JP and Mandelli, L and Marusic, D and Mészáros, Gergely and Musa, GJ and Postuvan, V and Resch, F and Saiz, PA and Sisask, M and Varnik, A and Sarchiapone, M and Hoven, CW and Wasserman, D},
	doi = {10.1111/j.1360-0443.2012.03946.x},
	journal-iso = {ADDICTION},
	journal = {ADDICTION},
	volume = {107},
	unique-id = {1973403},
	issn = {0965-2140},
	abstract = {AIMS: To investigate the prevalence of pathological Internet use (PIU) and maladaptive Internet use (MIU) among adolescents in eleven European countries in relation to demographic, social factors and Internet accessibility. DESIGN: Cross-sectional survey SETTING: The 7th Framework EU funded project, Saving and Empowering Young Lives in Europe (SEYLE), is a randomized controlled trial (RCT) evaluating interventions for risk-behaviors among adolescents in Austria, Estonia, France, Germany, Hungary, Ireland, Israel, Italy, Romania, Slovenia and Spain with Sweden serving as the coordinating center. PARTICIPANTS: 11,956 adolescents (F/M: 6731/5225; mean age: 14.9+/-0.89) recruited from randomly selected schools within the eleven study sites. MEASUREMENTS: Internet users were classified by gender into three categories: adaptive, maladaptive and pathological, based on the Young Diagnostic Questionnaire for Internet Addiction (YDQ). FINDINGS: The overall prevalence of PIU was 4.4%; higher among males than females (5.2% vs. 3.8%) and differed between countries (Chi(2) =309.98; df=20; p<.001). PIU significantly correlated with mean hours online and male gender. Highest ranked online activities were watching videos, frequenting chat rooms and social networking; significantly higher rates of playing single-user games were found in males and social networking in females. Living in metropolitan areas was associated with PIU. Students not living with a biological parent, low-parental involvement and parental unemployment showed the highest relative risks of both MIU and PIU. CONCLUSIONS: Across a range of countries in Europe, using the Young Diagnostic Questionnaire for Internet Addiction yields a prevalence of 'pathological internet use' of 4.4% among adolescents, but varies by country and gender; adolescents lacking emotional and psychological support are at highest risk.},
	year = {2012},
	eissn = {1360-0443},
	pages = {2210-2222},
	orcid-numbers = {Balázs, Judit/0000-0001-6397-1419}
}