* Basic Research (e.g., in many scientific fields): A minimum of a Bachelor's degree is usually required for entry-level research positions, often assisting more senior researchers. However, most researchers pursue a Master's degree and a significant portion obtain a PhD (Doctor of Philosophy) to conduct independent research and lead their own projects. A PhD is generally considered essential for academic research positions and highly desirable for many research roles in industry and government.
* Specific Fields: Some fields, like medicine, require a professional degree (e.g., MD or MD/PhD) before embarking on research. Others, like law, might require a Juris Doctor (JD) before conducting legal scholarship. Engineering often benefits from a Master's or PhD.
* Postdoctoral Research: Even with a PhD, many researchers spend several years as postdoctoral fellows, gaining further experience and expertise before securing independent research positions.
In short: While a Bachelor's degree might allow some entry-level involvement in research, a Master's or PhD is almost always necessary for a career as a researcher, especially if aiming for an independent research role in academia or industry. The specific degree required is highly dependent on the research field.