What type of evaluation is aimed at improving program effectiveness during the ongoing implementation?

Formative evaluation is focused on assessing a program while it is still in progress, with the primary goal of improving its effectiveness. This type of evaluation involves gathering feedback during the implementation phase, allowing for real-time adjustments and improvements to be made. It is often utilized to refine and enhance the program, ensuring that objectives are being met and any issues are addressed promptly.

In contrast, summative evaluation typically occurs at the end of a program to assess its overall impact or success, rather than making improvements during implementation. Outcome evaluation examines the long-term effects or results of a program after it has been completed. Process evaluation focuses on the implementation of the program itself, including the procedures and operations but does not specifically aim at improving effectiveness in real-time like formative evaluation does. Thus, formative evaluation is the most accurate answer in this context, as it directly relates to enhancing a program's success while it is still being delivered.