Many disciplines of scholarship are interested in the Relative Age Effect (RAE), whereby age-banding confers advantages on older members of the cohort over younger ones. Most research does not test this relationship in a manner consistent with theory (which requires a decline in frequency across the cohort year), instead resorting to non-parametric, non-directional approaches. In this article, the authors address this disconnect, provide an overview of the benefits associated with Poisson regression modelling, and two managerially useful measures for quantifying RAE bias, namely the Indices of Discrimination and Wastage. In a tutorial-like exposition, applications and extensions of this approach are illustrated using data on professional soccer players competing in the top two tiers of the “Big Five” European football leagues in the search to identify paragon clubs, leagues, and countries from which others may learn to mitigate this form of age-discrimination in the talent identification process. As with OLS regression, Poisson regression may include more than one independent variable. In this way we test competing explanations of RAE; control for unwanted sources of covariation; model interaction effects (that different clubs and countries may not all be subject to RAE to the same degree); and test for non-monotonic versions of RAE suggested in the literature.
Many US states have a single cutoff date for school entry, meaning that some children are older than others when they begin kindergarten. We show that this variation in birth months is associated with differences in adult labor market outcomes in the mutual fund industry. Relatively older managers (i.e., those born just after the cutoff) make better stock selections, and their funds outperform their younger peers’ funds by 0.48% per annum. This difference is linked to increased confidence. Surve...
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...
#2Corrado Lupo(UNITO: University of Turin)H-Index: 23
Last. Gennaro Boccia(UNITO: University of Turin)H-Index: 13
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: The relative age effect (RAE; i.e., an asymmetry in the birth distribution) is a bias observed in sport competitions that may favour relatively older athletes in talent identification. Therefore, the aim of this study was to investigate the presence of RAE in elite soccer players competing in the Italian championships, even considering the discriminations of younger and older Serie A players (in relation to the median age of the sample), and different positional roles (i.e., goalkeeper, defend...
The paper analyses two datasets of elite soccer players (top 1000 professionals and UEFA Under-19 Youth League). In both, we find a Relative Age Effect (RAE) for frequency, but not for value. That is, while there are more players born at the start of the competition year, their transfer values are no higher, nor are they given more game time. We use Poisson regression to derive a transparent index of the discrimination present in RAE. Also, because Poisson is valid for small frequency counts, it...
Highlights • We conducted a controlled experiment in high schools. • Participants are the very oldest or very youngest in their classroom. • We find that the oldest students are more competitive than the youngest students. • This effect is concentrated on male students. Abstract Having been relatively old at school tends to have a long lasting positive effect on professional achievement, in particular in competitive environments (sports, politics). We investigate the roots of this pattern and st...
We fi…nd an inverted relation between a player'’s birthday and the likelihood of receiving the Ballon d'’Or (awarded to the best football player in the world). We develop a multi-period skill formation model with selection into elite education. We show that those born late (underdogs) need to work harder to be selected for elite educational programs. However, those born too late will not make the cut-off. Those born late –– but not too late –– will thus end up with the highest skill levels as ad...
Last. Stephen Cobley(USYD: University of Sydney)H-Index: 30
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The relative age effect (RAE) and its relationships with maturation, anthropometry, and physical performance characteristics were examined across a representative sample of English youth soccer development programmes. Birth dates of 1,212 players, chronologically age-grouped (i.e., U9’s-U18’s), representing 17 professional clubs (i.e., playing in Leagues 1 & 2) were obtained and categorised into relative age quartiles from the start of the selection year (Q1 = Sep-Nov; Q2 = Dec-Feb; Q3 = Mar-May...
Traditionally, the Relative Age Effect (RAE) is determined with a chi-squared goodness-of-fit test based on a theoretical expected distribution of birthdates. This distribution must be that of the parent population, but many authors choose to replace it by a uniform distribution in order to simplify calculations. The consequences of this simplification are: (a) the actual Type 1 risk is no longer controlled at the conventional threshold of significance; (b) this risk increases with the sample si...
OBJECTIVE: Evidence collected in many parts of the world suggests that, compared to older students, students who are relatively younger at school entry tend to have worse academic performance and lower levels of income. This study examined how relative age in a grade affects suicide rates of adolescents and young adults between 15 and 25 years of age using data from Japan. METHOD: We examined individual death records in the Vital Statistics of Japan from 1989 to 2010. In contrast to other countr...
The purpose of this long-term retrospective analysis was to determine whether anthropometric and physical performance data could predict success in elite youth Scottish soccer players. Stature, body mass, sprint, jump and aerobic performance were collected from 512 players (U10 to U17) across a 10-year period. Players participated in an average of four profiling sessions (range: 1-14) and up to a maximum of three per year (August, December, and May) with standardisation applied to the surface, t...
In contrast to research on team-sports, delayed maturation has been observed in higher-skilled gymnasts, leading to atypical distributions of the relative age effect. Recent studies have reported intra-sport differences in the relative age effect and given the task demands across gymnastics apparatus, we expected to find evidence for the influence of apparatus specialism. We examined the presence of a relative age effects within a sample of elite, international, women's artistic gymnasts (N = 80...
Athletes born late in the selection year are disadvantaged compared to the relatively older in youth age groups. This leads to an overrepresentation of the early-born in professional teams, which i...
The relative age effect (RAE) is associated with (dis)advantages in competitive sports. While the RAE in elite male soccer reveals a skewed birthdate distribution in relation to a certain cut-off date, research of RAE in elite female soccer is affected by a small number of samples and conflicting results. The purpose of this study was to investigate the RAE in elite adult German soccer regarding gender and competition level. The sample comprised 680 female and 1,083 male players of the two top G...
Last. Pablo Burillo(UEM: European University of Madrid)H-Index: 10
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The relative age effect (RAE) consists of the lower presence of members of an age group born in the months furthest from the age cut-off date established. In youth soccer, it is known that because of this effect the birth dates of more players in a team are closer to the cutoff of 1 January. These older players, due to their physical and psychological advantages, are more likely to be identified as talent. This study aimed to examine whether RAE can be identified in professional players of the t...
Purpose: The aim of the study was to ascertain the influence of relative age on entry to a professional soccer club and on long-term career attainment.Methods: We analysed the birth dates (divided ...
AbstractThis study aimed to determine the impact of a sensory room on consumer arousal (either self-reported or observed) in an adult mental health rehabiilitation unit. Retrospective, single group...
The relative age effect plays an important role in the pursuit of excellence, providing advantage to athletes born at the beginning of the year or near the cut-off date. This phenomenon has been observed in areas such as sports, education or business. Traditionally, the chi-square test has been used to analyze whether there are statistically significant differences in the distribution of births in each of the four quarters of the year. However, this approach is limited, focusing only on the anal...
Many previous studies in national team sports did not report evidence about relative age effect (RAE) in senior categories. This study aimed for the first time to determine if the RAE may specifically affect the early, but not the late, phase of senior career in elite team sports. A total of 3,319 birthdates (basketball: n=642; rugby: n=572; soccer: n=1318; volleyball: n=337; water polo: n=450) of elite senior players were analysed. Senior players with an age lower or equal to the 25° percentile...
Last. Gennaro Boccia(UNITO: University of Turin)H-Index: 13
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The relative age effect (RAE) is a common phenomenon observed in youth sports and is characterized by a significant over-representation of athletes born close to the date of selection. However, there is a lack of research on RAE in world-class track and field athletes and it is not clear if this effect persists into adulthood. Thus, this study examined for the first time the prevalence and magnitude of RAE at world class level in all track and field disciplines. Birthdates of 39,590 athletes (51...
