William V Massey, Megan B Stellino, John Geldhof
An observational study of recess quality and physical activity in urban primary schools
BMC public health
researchers studied whether youth addicted video games previous studies based regional convenience samples using national sample study gathered information videogaming habits parental involvement gaming determine percentage youth meet clinicalstyle criteria pathological gaming harris poll surveyed randomly selected sample 1178 american youth ages 8 18 8 videogame players sample exhibited pathological patterns play several indicators documented convergent divergent validity results pathological gamers spent twice much time playing nonpathological gamers received poorer grades school pathological gaming also showed comorbidity attention problems pathological status significantly predicted poorer school performance even controlling sex age weekly amount videogame play results confirm pathological gaming measured reliably construct demonstrates validity simply isomorphic high amount play