Our summative and formative research has played crucial roles in informing evidence-based decision-making and improving program effectiveness in the fields such as education, social sciences, and program evaluation. We have assessed the final outcomes and impacts of interventions or programs by evaluating the effectiveness, efficiency, and overall success of an initiative after its implementation. On the other hand, our research has provided the foundation for designing and implementing interventions that are relevant, culturally appropriate, and responsive to the needs of the intended beneficiaries.