References of "van Rooij, Antonius J"
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See detailBehavioural Addiction Open Definition 2.0 – Using the open science framework for collaborative and transparent theoretical development
Billieux, Joël UL; Van Rooij, Antonius J; Heeren, Alexandre et al

in Addiction (2017), 112(10), 1723-1724

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See detailInternet Gaming Disorder as a formative construct: Implications for conceptualization and measurement.
van Rooij, Antonius J.; Van Looy, Jan; Billieux, Joël UL

in Psychiatry and clinical neurosciences (2017), 71(7), 445-458

Some people have serious problems controlling their Internet and video game use. The DSM-5 now includes a proposal for 'Internet Gaming Disorder' (IGD) as a condition in need of further study. Various ... [more ▼]

Some people have serious problems controlling their Internet and video game use. The DSM-5 now includes a proposal for 'Internet Gaming Disorder' (IGD) as a condition in need of further study. Various studies aim to validate the proposed diagnostic criteria for IGD and multiple new scales have been introduced that cover the suggested criteria. Using a structured approach, we demonstrate that IGD might be better interpreted as a formative construct, as opposed to the current practice of conceptualizing it as a reflective construct. Incorrectly approaching a formative construct as a reflective one causes serious problems in scale development, including: (i) incorrect reliance on item-to-total scale correlation to exclude items and incorrectly relying on indices of inter-item reliability that do not fit the measurement model (e.g., Cronbach's alpha); (ii) incorrect interpretation of composite or mean scores that assume all items are equal in contributing value to a sum score; and (iii) biased estimation of model parameters in statistical models. We show that these issues are impacting current validation efforts through two recent examples. A reinterpretation of IGD as a formative construct has broad consequences for current validation efforts and provides opportunities to reanalyze existing data. We discuss three broad implications for current research: (i) composite latent constructs should be defined and used in models; (ii) item exclusion and selection should not rely on item-to-total scale correlations; and (iii) existing definitions of IGD should be enriched further. [less ▲]

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See detailWorking towards an international consensus on criteria for assessing internet gaming disorder: a critical commentary on Petry et al. (2014).
Griffiths, Mark D.; van Rooij, Antonius J.; Kardefelt-Winther, Daniel et al

in Addiction (Abingdon, England) (2016), 111(1), 167-75

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