Relative age effect and second-tiers: No second chance for later-born players

Ante Rađa, Johnny Padulo, Igor Jelaska, Luca Paolo Ardigò and Luca Fumarco

PLOS ONE, 2018, vol. 13, issue 8, 1-12

Abstract: The main objective of this research was to determine the existence of relative age effect (RAE) in five European soccer leagues and their second-tier competitions. Even though RAE is a well-known phenomenon in professional sports environments it seems that the effect does not decline over the years. Moreover, additional information is required, especially when taking into account second-tier leagues. Birthdates from 1,332 first-tier domestic players from France, England, Spain, Germany and Italy and birthdates from 1,992 second-tier domestic players for the 2014/2015 season were taken for statistical analysis. In addition to standard statistical tests, the data were analyzed using econometric techniques for count data using Poisson and negative binomial regressions. The results obtained confirmed a biased distribution of birthdates in favor of players born earlier in the calendar year. For all of the five first-tier soccer leagues there was an unequal distribution of birthdates (France χ2 = 40.976, P

Date: 2018
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Persistent link: https://EconPapers.repec.org/RePEc:plo:pone00:0201795

DOI: 10.1371/journal.pone.0201795

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