The role of relative age effects in generic motor skill diagnostics using the German motor test (6-18): diagnostic outcomes and recruitment of 9-10-year-old children to sports schools in Germany.

Autor/inn/en	Stolz, Isabel; Bokeloh, Tabea; Feldhaus, Chiara; Bös, Klaus
Titel	The role of relative age effects in generic motor skill diagnostics using the German motor test (6-18): diagnostic outcomes and recruitment of 9-10-year-old children to sports schools in Germany. Gefälligkeitsübersetzung: Die Rolle relativer Alterseffekte in der generisch-motorischen Leistungsdiagnostik mittels des Deutschen Motorik-Tests (6-18): diagnostische Ergebnisse und die Aufnahme 9- bis 10-jähriger Kinder an Sportschulen in Deutschland.
Quelle	In: Frontiers in psychology, (2026) 17, Art. 1814502, 12 S. PDF als Volltext kostenfreie Datei Link als defekt meldenVerfügbarkeit
Sprache	englisch
Dokumenttyp	online; Zeitschriftenaufsatz
ISSN	1664-1078
DOI	10.3389/fpsyg.2026.1814502
Schlagwörter	Beeinflussung; Leistungsentwicklung; Motorische Leistungsfähigkeit; Diagnostisches Verfahren; Test; Testbatterie; Lebensalter; Kind; Primarbereich; Sportschule; Physische Leistungsfähigkeit; Body-Mass-Index; Kinderheilkunde; Datenanalyse; Bewegung (Motorische); Fitness; Fitnesstest; Sportmedizin; Empirische Untersuchung; Altersabhängigkeit; Grundschulalter; Alter; Geschlechtsspezifik; Talentsuche; Trendanalyse; Deutschland; Nordrhein-Westfalen
Abstract	Introduction: Generic motor skill diagnostics are widely applied in early talent identification alongside anthropometric and sport-specific performance measures. However, talent selection processes in youth sports are frequently influenced by relative age effects (RAEs), which are closely linked to diagnostic procedures and recruitment practices.Methods: This retrospective analysis examined associations between calendar age and motor performance in a large cohort of German fourth-grade schoolchildren (N = 19,179; aged 9-10 years). All participants completed the German Motor Test 6-18 (GMT 6-18) between 2008 and 2022 as part of the diagnostic process for recommendations to North Rhine-Westphalia (NRW) Sports Schools, a combined school and competitive sport system. Motor performance differences were analyzed using analyses of variance, reporting F-values, p-values, and effect sizes (eta squared). Furthermore, generalized linear models (GENLIN) were applied to examine associations while accounting for covariates and to support the robustness of the findings. Recommendation and admission rates were assessed using Pearson's chi-square tests, Cramer's V, corresponding p-values and a logistic regression analysis.Results: The results indicate that the magnitude of RAEs in this sport-unspecific, generic motor skill assessment was comparatively low within the 9-10-year-old age group. While statistically significant differences between age groups were observed, effect sizes were consistently small, suggesting limited practical relevance. Overall, the results indicate that raw values should be considered in addition to effect sizes for an appropriate interpretation of age-related differences.Discussion/Conclusion: The gained findings show few meaningful differences in motor performance between age groups, but a practically relevant RAE can be negated. Conclusively, suggestions are given as to how the RAE could be countered in diagnostics to further reduce potential RAEs in talent diagnostics, including refined analytical approaches and mathematical adjustments. (Autor).
Erfasst von	Bundesinstitut für Sportwissenschaft, Bonn
Update	2026/4