| Abstract | People often form and retrieve memories in the company of others. Yet, nearly 125 years of cognitive research on learning and memory has mainly focused on individuals working in isolation. Although important topics such as eyewitness memory and autobiographical memory have evaluated social influences, a study of group memory has progressed mainly within the provinces of history, anthropology, sociology, and social psychology. In this context, the recent surge in research on the cognitive basis of collaborative memory marks an important conceptual departure. As a first aim, we review these empirical and theoretical advances on the nature and influence of collaborative memory. Effects of collaboration are counterintuitive because individuals remember less when recalling in groups. Collaboration can also lead to forgetting and increase memory errors. Conversely, collaboration can also improve memory under proper conditions. As a second aim, we propose an overarching theoretical framework that specifies the cognitive mechanisms associated with the costs and benefits of collaboration on memory. A study of the reciprocal influences of the group and the individual on memory processes naturally draws upon several disciplines. Our aim is to elucidate the cognitive components of this complex phenomenon and situate this analysis within a broader interdisciplinary perspective.
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