Collective overclaiming is related to collective narcissism and numeracy.

When asked to estimate how much their state or nation has contributed to history, people typically provide unreasonably large estimates, claiming that their group has contributed much more to history than nongroup members would estimate, demonstrating collective overclaiming. Why does such overclaiming occur? In the current study we examined factors that might predict collective overclaiming. Participants from 12 U.S. states estimated how much their home state contributed to U.S. history, completed measures of collective narcissism and numeracy, and rated the importance of 60 specific historical events. There was a positive relationship between collective overclaiming and collective narcissism, a negative relationship between collective overclaiming and numeracy, and a positive relationship between collective overclaiming and the importance ratings of the specific events. Together, these results indicate that overclaiming is partially and positively related to collective narcissism and negatively related to people's ability to work with numbers. We conclude that collective overclaiming is likely determined by several factors, including the availability heuristic and ego protection mechanisms, in addition to collective narcissism and relative innumeracy.

Simulating conversations: A Markov chain model of a central speaker's mnemonic influence over a group of communicating listeners.

Through their selective rehearsal, Central Speakers can reshape collective memory in a group of listeners, both by increasing accessibility for mentioned items (shared practice effects) and by decreasing relative accessibility for related but unmentioned items (socially shared retrieval induced forgetting, i.e., SSRIF). Subsequent networked communication in the group can further modify these mnemonic influences. Extant empirical work has tended to examine such downstream influences on a Central Speaker's mnemonic influence following a relatively limited number of interactions - often only two or three conversations. We develop a set of Markov chain simulations to model the long-term dynamics of such conversational remembering across a variety of group types, based on reported empirical data. These models indicate that some previously reported effects will stabilize in the long-term collective memory following repeated rounds of conversation. Notably, both shared practice effects and SSRIF persist into future steady states. However, other projected future states differ from those described so far in the empirical literature, specifically: the amplification of shared practice effects in communicational versus solo remembering non-conversational groups, the relatively transient impact of social (dis)identification with a Central Speaker, and the sensitivity of communicating networks to much smaller mnemonic biases introduced by the Central Speaker than groups of individual rememberers. Together, these simulations contribute insights into the long-term temporal dynamics of collective memory by addressing questions difficult to tackle using extant laboratory methods, and provide concrete suggestions for future empirical work.

Implicit intertemporal trajectories in cognitive representations of the self and nation.

Individual selves and the collectives to which people belong can be mentally represented as following intertemporal trajectories-progress, decline, or stasis. These studies examined the relation between intertemporal trajectories for the self and nation in American and British samples collected at the beginning and end of major COVID-19 restrictions. Implicit temporal trajectories can be inferred from asymmetries in the cognitive availability of positive and negative events across different mentally represented temporal periods (e.g., memory for the past and the imagined future). At the beginning of COVID-19 restrictions, both personal and collective temporal thought demonstrated implicit temporal trajectories of decline, in which future thought was less positive than memory. The usually reliable positivity biases in personal temporal thought may be reversable by major public events. This implicit trajectory of decline attenuated in personal temporal thought after the lifting of COVID-19 restrictions. However, collective temporal thought demonstrated a pervasive negativity bias across temporal domains at both data collection points, with the collective future more strongly negative than collective memory. Explicit beliefs concerning collective progress, decline, and hope for the national future corresponded to asymmetries in the cognitive availability of positive and negative events within collective temporal thought.

Biased collective memories and historical overclaiming: An availability heuristic account.

People tend to overclaim historical influence for their own ingroup, in a phenomenon called ingroup inflation. Although this overclaiming has been empirically demonstrated in the USA and other nations, the cognitive mechanisms underlying it have been largely conjectural. We test one such proposed mechanism: the application of the availability heuristic to a biased collective memory. Collective memories in the psychological sense are shared memories held individually by members of a group that pertain to their group identity. Using measures of retrieval fluency, we show that asymmetrical accessibility for collective memories favoring ingroup - versus outgroup - relevant historical events is correlated with overclaiming, and that reducing this asymmetry through targeted retrieval of outgroup-relevant events reduces overclaiming (Experiments 1 and 2). We also suggest that ingroup inflation arises because of retrieval fluency per se, rather than more stable asymmetries in knowledge or event-specific judgments of importance (Experiment 3). Together, these studies suggest some cognitive bases of collective overclaiming and cognitive interventions that might attenuate these biased judgments.

Remembering the big game: social identity and memory for media events.

Two studies examined how memories are formed around championship sporting events, which we classify as media events. The first study employed a test-retest methodology to assess how fans of a sport recall a championship sporting event. The second study examined how fans of specific sports teams recalled two championship sporting events in which their team either won or lost. Of particular interest was the emergence of a collective memory within fan communities. We assessed memory for the event itself (event memory), with an emphasis on the emergence of a collective memory, and memory for the context in which one experienced the event (personal circumstance memory). In contrast to fans of a sport more generally, fans of a particular team recalled events involving their team with detail, converged on collective memories, and provided personal circumstance memories that met the criteria for flashbulb memories. We discuss these results in the context of social identities and the elements involved in narratives of media events. Different types of fandom, our measure of social identity, uniquely influenced the collective memories formed for essential and ancillary elements of narratives surrounding championship sporting events.

Convergence on collective memories: Central speakers and distributed remembering.

A primary interest in the psychological study of collective memory concerns the sociocognitive processes by which Central Speakers-politicians, journalists, and other public voices-may reshape the memory of groups of listeners. In 2 experiments, we examine how (a) Central Speakers may induce shared practice effects and socially shared retrieval-induced forgetting (SSRIF) for related but unmentioned items in a group of listeners, (b) how communicational remembering along a serial transmission chain can moderate this initial mnemonic influence, and (c) how listeners' relational motives toward the Central Speaker, operationalized as perceived social group membership, impact both (a) and (b). Experiment 1 shows that a Central Speaker may induce both SSRIF and shared practice effects in a group of listeners, and that, relative to noncommunicating nominal groups, communicational remembering in a looped serial transmission chain amplifies the relative inaccessibility of related but unmentioned items. In Experiment 2, we show that the Central Speaker's perceived group membership moderates the effects of subsequent communicational remembering. When ingroup, communicational remembering amplifies the Central Speaker's SSRIF, when outgroup, subsequent communicational remembering attenuates it. (PsycINFO Database Record (c) 2020 APA, all rights reserved).

How we have fallen: implicit trajectories in collective temporal thought.

Memory may play a critical role in the ability to imagine events in the future. While most work on this relation has concerned episodic memory and simulated episodic events in the future, the current study examines how collective memories relate to imagination for the collective future. Two thousand American participants provided events for (1) America's origins, (2) normative events that all Americans should remember, and (3) events in America's future. Each event was rated for emotional valence. Whereas collective memories - particularly origin events - showed pronounced positivity biases, there was a negativity bias in collective future thought, indicating an implicit trajectory of decline in Americans' representations of their nation across time. Imagination for the social future may not be simulated based on the template of collective memories, but may rather relate to the past in a way that is mediated by cultural narrative schemata.

Moralized memory: binding values predict inflated estimates of the group's historical influence.

Collective memories are memories or historical knowledge shared by individual group members, which shape their collective identity. Ingroup inflation, which has previously also been referred to as national narcissism or state narcissism, is the finding that group members judge their own group to have been significantly more historically influential than do people from outside the group. We examined the role of moral motivations in this biased remembering. A sample of 2118 participants, on average 42 from each state of the United States, rated their home state's contribution to U.S. history, as well as that of ten other states randomly selected. We demonstrated an ingroup inflation effect in estimates of the group's historical influence. Participants' endorsement of binding values - loyalty, authority, and sanctity, but particularly loyalty - positively predicted the size of this effect. Endorsement of individuating values - care and fairness - did not predict collective narcissism. Moral motives may shape biases in collective remembering.

Collective Memory from a Psychological Perspective.

Social scientists have studied collective memory for almost a century, but psychological analyses have only recently emerged. Although no singular approach to the psychological study of collective memory exists, research has largely: (i) explored the social representations of history, including generational differences; (ii) probed for the underlying cognitive processes leading to the formation of collective memories, adopting either a top-down or bottom-up approach; and (iii) explored how people live in history and transmit personal memories of historical importance across generations. Here, we discuss these different approaches and highlight commonalities and connections between them.