A prospective observational study is a type of research where investigators select a group of subjects and then observe them over a certain period of time. The researchers collect data on the subjects' exposure to certain risk factors or interventions and then track the outcomes. This type of study is often used to study the effects of suspected risk factors that cannot be controlled experimentally.| Simply Psychology
A longitudinal study is a type of observational and correlational study that involves monitoring a population over an extended period of time. It allows researchers to track changes and developments in the subjects over time.| Simply Psychology