Rosalie Rayner

Rosalie Rayner was an American psychologist best known for her work in behaviorism alongside her husband, John B. Watson. Together, they conducted the famous "Little Albert" experiment in 1920, which demonstrated how emotions such as fear could be conditioned in children. Rayner's research focused on the role of environment in shaping behavior, emphasizing that human emotions could be influenced by external stimuli. Despite facing controversy for ethical concerns regarding the treatment of the child in their experiment, her contributions helped lay the groundwork for later studies in psychology and child development.