Evaluative Research Methodology for Nursing & Health Course Evaluative research is a particularly useful approach to research in health & social care because it enables us to determine the value of the services we provide. This course will define evaluative research & discuss its purpose in relation to health & social care. You will distinguish between evaluative research & exploratory research & go on to explore how some types of evaluative research could be described as critical research. You will also examine the use of evaluative research in influencing policy formulation & decision-making.