This AEA365 blog by Tom Grayson provides a list of quotes from notable evaluation colleagues about the importance of evaluative thinking.
Jos Vaessen (PhD) is evaluation advisor at the Independent Evaluation Group (since 2016) and deputy head of the Global Evaluation Initiative (since 2021). He has been working in evaluation research since 1998, first as an academic evaluation consultant and later on as a lead evaluator. He has conducted and led evaluations for multilateral and bilateral development organizations in a range of policy fields such as agriculture, environment, science, education, health and others. Jos has authored several internationally peer reviewed publications, including three books.