Based on the propositions and implications from models of human development, coupled with current research design limitations in talent identification and development (TID), the purpose of this chapter is to highlight the significance and benefits from longitudinal multivariate research approaches toward knowledge and understanding of athlete development. To achieve this, we synthesise and overview studies in three sub-disciplinary areas of athlete development (i.e., physical, psychological, technical and tactical) which we feel provide valuable longitudinal and multivariate insight. Afterward, we identify future directions and implications for both researchers and practitioners. All along we accept and acknowledge the challenges in conducting longitudinal multivariate studies, including the time and resources required on researchers, participants and sporting organisations (Matton et al., 2007). Our intention though is to help spur on the TID research field into utilising better research designs, more encompassing measures, and unique analyses. If adopted, we propose that the likelihood of informative unique contributions will increase, potentially helping unravel the complexity of the TID process.
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