Final answer:
Research interests in social psychology shifted in the 1960s, 1970s, 1980s, and 1990s towards studying smaller group interactions, revitalizing symbolic interactionism, and exploring postmodern social theory.
Step-by-step explanation:
In the 1960s, research interests in social psychology shifted towards the study of smaller group interactions and the use of psychological research and perspectives to analyze social interaction on a micro scale. In the 1970s, there was a revitalization of symbolic interactionism, which focuses on how people interact and communicate through symbols. In the 1980s and 1990s, there was a rise in postmodern social theory, with a focus on rejecting macro-level explanations and exploring constructivist views of symbolic interactionism.