Transactive memory is a psychological hypothesis first proposed by Daniel Wegner in 1985 as a response to earlier theories of "group mind" such as groupthink. A transactive memory system is a mechanism through which groups collectively encode, store, and retrieve knowledge.
In 1985, Daniel Wegner introduced transactive memory as an alternative to theories of groupthink and other models of collective intelligence. This concept outlines how groups can collectively encode, store, and retrieve information through the sharing of knowledge among its members.