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Collective memory

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Collective memory is a shared pool of knowledge, information, and memories belonging to a social group. This shared pool is deeply tied to a group's identity. It can be built and passed down by many types of groups. These include large groups like entire nations or smaller groups like specific generations or communities. Experts in fields like sociology, psychology, and anthropology study how these memories function. Collective memory can act as a shared body of knowledge. It can also be a collection of narratives, values, and ideas. Sometimes, it is a continuous process where memories of events change over time.

It is important to distinguish collective memory from history. The goal of history is to provide an accurate and unbiased portrayal of the past. Historians try to integrate multiple perspectives to create a complete account. In contrast, collective memory often focuses on a single perspective. It represents events through the specific values, narratives, and biases of one group. This means different nations may have very different recollections of the same event. For instance, studies show American and Russian students recalled different significant events from World War II. This demonstrates how group identity shapes what is remembered.

Many scholars have expanded our understanding of these concepts. In 1925, the sociologist Maurice Halbwachs advanced the idea in his book, "Les cadres sociaux de la mémoire." Jan Assmann later developed the idea of "communicative memory." This is a type of collective memory based on everyday communication and oral traditions. Assmann also noted forms of memory that are fixed in monuments or texts. Other thinkers have offered different views. James E. Young proposed "collected memory" to describe the fragmented nature of individual memories. Historian Guy Beiner suggested using the term "social memory" instead. He also introduced the idea of "social forgetting."

Collective memory can also have powerful social and political effects. Kiyoshi Tanimoto, an atomic-bomb survivor from Hiroshima, theorized that the use of the bomb changed the world's collective memory. He believed it would serve as a permanent warning. However, some scholars warn about the risks of strong cultural emphasis on certain events. Historian David Rieff noted that focusing heavily on past wrongs can sometimes prevent the resolution of armed conflicts. Sociologist David Leupold also argued that collective memory can be tied to structural nationalism. He suggested using a multi-collective perspective to include family or local identities instead.

Psychologists study the cognitive mechanisms that allow groups to remember things together. One phenomenon is called collaborative inhibition. This occurs when a group's total memory recall is lower than the combined individual memories of its members. Researchers like Weldon, Bellinger, Basden, and Thomas suggest this is caused by "retrieval disruption." When people discuss a topic, the information shared can disrupt the unique way an individual organizes their own thoughts. This interference makes it harder for the group to recall information accurately. Interestingly, offering money or reducing the fear of being judged does not stop this inhibition.

Despite these challenges, groups can also help memory through "cross-cueing." This is when one person's information acts as a cue for another person. This exchange can help a team remember specific details they might have missed alone. However, collective memory is not always accurate. People can experience "collective false memories." One example is the "Mandela effect," named after Nelson Mandela. Many people falsely believed he had died when he was actually alive. Another study found that people incorrectly remembered if a clock at a station in Bologna, Italy, was functioning after a bombing.

Finally, collective memory can involve "collective narcissism." This is a bias where a group exaggerates its own importance. In one study involving participants from 35 countries, many gave exaggerated estimates of their country's contribution to world history. Similar patterns of overestimation were found in a study of Americans across 50 states. This shows how social identity can influence how we perceive the past. Today, the internet is changing this process. Pierre Lévy argues that the internet allows humanity to access and modify a vast, shared online collective memory.

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