Prospective validation is a process in which a research study is designed and conducted to assess the accuracy, reliability, and validity of a specific hypothesis, test, or measurement tool before it is implemented or used in clinical practice. This type of validation involves collecting new data from participants and testing the hypothesis or tool in real-time, rather than relying on existing data or retrospective analysis. Prospective validation is essential for ensuring that research findings are credible and can be effectively applied in practice.