{"id":"W4412910894","doi":"10.3389/fspor.2025.1618333","title":"“More players can reach national and international levels”: coaches perceptions of “birthday-banding” in youth squash and its potential for minimising relative age effects","year":2025,"lang":"en","type":"article","venue":"Frontiers in Sports and Active Living","topic":"Sport Psychology and Performance","field":"Psychology","cited_by":1,"is_retracted":false,"has_abstract":true,"ca_institutions":"Lunenfeld-Tanenbaum Research Institute; University of Toronto","funders":"","keywords":"Athletes; Flexibility (engineering); Psychology; Perception; Squash; Thematic analysis; Coaching; Applied psychology; Order (exchange); Social psychology; Developmental psychology; Sociology; Qualitative research; Management; Medicine; Business; Physical therapy; Geography; Social science","routes":{"ca_aff":true,"ca_fund":false,"ca_venue":false,"about_ca":false,"invisible_to_affiliation_only":false},"retraction":null,"screen":null,"direct_labels":[],"prediction":{"model_version":"metacan-v3-hybrid-931329e0061c","candidate_categories":[],"consensus_categories":[],"category_scores_codex":[0.004434024,0.0002701763,0.0002834739,0.0007667051,0.003159213,0.003539288,0.0006991113,0.001057542,0.002747434],"category_scores_gemma":[0.005152608,0.0004368142,0.000282449,0.0003385962,0.003854461,0.001699251,0.004414239,0.001693505,0.0002506222],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.001422236,"about_ca_system_score_gemma":0.001599492,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.01712036,"about_ca_topic_score_gemma":0.03275373,"domain_scores_codex":[0.9972079,0.001377556,0.0001679707,0.00022818,0.0004116628,0.0006067329],"domain_scores_gemma":[0.9966432,0.0008112094,0.0007058578,0.0000665355,0.0003895252,0.00138363],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"qualitative","study_design_gemma":"qualitative","study_design_scores_codex":[0.0001214965,0.0004028213,0.2478805,0.0004160095,0.00005201545,0.001144839,0.72677,0.0001492339,0.003228171,0.002005988,0.001234411,0.01659456],"study_design_scores_gemma":[0.00001058978,0.0002517586,0.1807545,0.000224517,0.0000212082,0.0003772884,0.8111039,0.0002023414,0.000318894,0.0003771934,0.006327023,0.00003086834],"study_design_candidate":"qualitative","study_design_consensus":"qualitative","genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.9967414,0.0001251049,0.0002208067,0.0004853447,0.00001383217,0.00001431195,0.000007910627,0.000003123358,0.002388285],"genre_scores_gemma":[0.998777,0.0001203754,0.0002444299,0.0001220259,0.000005519197,0.00001483199,0.00001141874,0.000002771074,0.0007015989],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.01712036,"threshold_uncertainty_score":0.0340414,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.02105572538108196,"score_gpt":0.314271254373527,"score_spread":0.2932155289924451,"validation_status":"score_only:v0-immature-baseline","note":"Baseline scores from an immature model (maturity gate not passed). Scores rank; they never assert a category."}}