Evaluation research that attempts to examine the extent to which a program has been implemented or works as expected is called impact evaluation.
In a social science approach, the researcher independently specifies the nature and focus of the evaluation. Evaluation provides a systematic method for studying a program, practice, intervention, or initiative to understand how well it achieves its objectives. Evaluations help determine what is working well and what could be improved in a program or initiative. Formative evaluation is a special type of early evaluation that occurs during and after a program has been designed, but before it is widely implemented. Formative evaluation is used to understand the need for the intervention and make tentative decisions about how to implement or improve it.
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