Campbell, Donald T.

Donald T. Campbell was a prominent American social scientist known for his work in research methodology and social psychology. He developed key concepts like the "Quasi-Experiment," which allows researchers to study real-world situations where controlled experiments are not possible, and the "Campbell Collaboration," promoting rigorous evidence synthesis in social sciences. His work emphasized the importance of critical evaluation of research designs, aiming to produce reliable and valid findings that can inform policies and practices. Campbell's contributions have significantly shaped how social science research is conducted and interpreted, fostering a more scientific and rigorous approach to understanding social issues.