Collective memory refers to the shared pool of memories, knowledge and information of a social group that is significantly associated with the group's identity. The English phrase "collective memory" and the equivalent French phrase "la mémoire collective" appeared in the second half of the nineteenth century. The philosopher and sociologist Maurice Halbwachs analyzed and advanced the concept of the collective memory in the book Les cadres sociaux de la mémoire (1925). Collective memory can be constructed, shared, and passed on by large and small social groups. Examples of these groups can include nations, generations, communities, among others. Collective memory has been a topic of interest and research across a number of disciplines, including psychology, sociology, history, philosophy, and anthropology.
Collective memory has been conceptualized in several ways and proposed to have certain attributes. For instance, collective memory can refer to a shared body of knowledge (e.g., memory of a nation's past leaders or presidents); the image, narrative, values and ideas of a social group; or the continuous process by which collective memories of events change.
The difference between history and collective memory is best understood when comparing the aims and characteristics of each. A goal of history broadly is to provide a comprehensive, accurate, and unbiased portrayal of past events. This often includes the representation and comparison of multiple perspectives and the integration of these perspectives and details to provide a complete and accurate account. In contrast, collective memory focuses on a single perspective, for instance, the perspective of one social group, nation, or community. Consequently, collective memory represents past events as associated with the values, narratives and biases specific to that group.
Studies have found that people from different nations can have major differences in their recollections of the past.