What is a long term study?

A long-term study is a research approach that collects data over an extended period, often years or even decades, to observe changes and trends in a particular subject or population. This type of study allows researchers to assess the effects of variables over time and can provide insights into causal relationships and long-term outcomes. Longitudinal designs, which follow the same subjects over time, are commonly used in fields like psychology, medicine, and Social Sciences. The findings from long-term studies can inform policy, practice, and further research.