Study design, also known as the research design, refers to the specific plan of action formulated by researchers to conduct a scientific investigation. There are several synonyms for the term study design, such as research methodology, experimental design, survey design, and data collection methodology. Additionally, other related terms include research approach, study framework, data analysis plan, and research methodology strategy. Depending on the field and nature of the research, the study design chosen can have a significant impact on the validity and reliability of the findings. Researchers carefully consider the best study design for their research, often tailoring the approach to fit their hypothesis and data collection methods.