The aim of the current research was to investigate the relative age effect (RAE) as a factor of basketball dropout. In order to do so, we examined the distribution of birth dates of young male (n=44 498) and female (n=30 147) French basketball players who have dropped out this sport during or at the end of the 2005-2006 season. ?2 analyses showed an underrepresentation of dropouts among male players born early in the competition year and an overrepresentation among those born late in the"9-10 years old,""11-12 years old," and "13-14 years old" categories and in the first year of the "15-17 years old" category. Concerning girls, this asymmetry was observed across the same age categories. For both boys and girls, there was no biased distribution in the "7-8 years old" category. Findings of the present study confirm that the RAE should be taken into consideration in studies about sport dropout as a variable that may influence this phenomenon significantly.
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