Stephanie Denison, Fei Xu
The origins of probabilistic inference in human infants
Cognition
suspected elementary school age children engage choking game asphyxial practices prevalence unknown study conducted determine prevalence among 2nd 3rd graders twentyfive schools region southeastern france sampled following criteria school size ruralurban location underprivileged neighborhood privatepublic school second third grade classes randomly sampled school another sample 25 schools selected case school refused participate selfadministered questionnaire previously validated two nonsampled schools administered selected classes pediatrician leading project total 1125 questionnaires distributed 95 completed mean sd age children 83 07 years forty percent children reported already played choking games among declared players n401 male female ratio 14 13 played game every day several times day 91 male prevalence varied schools 1675 games significantly higher among children schooled underprivileged neighborhoods seventysix percent nonplayers 48 players aware potential lifethreatening risk mean prevalence elementary school 40 appears higher compared middle high schools 510 motivation differs elementary school children compared older children teenagers prevention choking games start elementary school determinants leading continuation practices elementary school high school need explored