Persistence of collective memory of corporate bankruptcy events discussed on X (Twitter) is influenced by pre-bankruptcy public attention.

Collective attention and memory involving significant events can be quantitatively studied via social media data. Previous studies analyzed user attention to discrete events that do not change post-event, and assume universal public attention patterns. However, dynamic events with ongoing updates are common, yielding varied individual attention patterns. We explore memory of U.S. companies filing Chapter 11 bankruptcy and being mentioned on X (formerly Twitter). Unlike discrete events, Chapter 11 entails ongoing financial changes as the company typically remains operational, influencing post-event attention dynamics. We collected 248,936 X mentions for 74 companies before and after each bankruptcy. Attention surged after bankruptcy, with distinct Low and High persistence levels compared with pre-bankruptcy attention. The two tweeting patterns were modeled using biexponential models, successfully predicting (F1-score: 0.81) post-bankruptcy attention persistence. Studying bankruptcy events on social media reveals diverse attention patterns, demonstrates how pre-bankruptcy attention affects post-bankruptcy recollection, and provides insights into memory of dynamic events.

A preliminary experimental test of the crossed influences between the valence of collective memory and collective future thinking.

This research experimentally examined the crossed influences between the emotional valence of collective memory and collective future thinking. As remembering the past and imagining the future are shaped by the present, we additionally test whether perceived anomie (i.e., perceiving present society as disintegrated and disregulated) would moderate these influences. Study 1 (N = 228 French participants) manipulated the valence of collective memory (positive vs. negative French past) to test its effect on the valence of collective future thinking. Results showed that the salience of a negative (vs. positive) French past lead to the projection of a more negative French future only among participants who perceived present society as highly disregulated. Study 2 (N = 215) focused on the influence of the valence of collective future thinking (positive vs. negative French future) on the valence associated with the French past. Results showed that the salience of a negative (vs. positive) French future lead left-wing participants to rate more positively events/figures of the French past that are usually valued by conservatives. Taken together, these studies provided evidence of conditional effects in the crossed influences between the emotional valence of collective memory and collective future thinking, thus contributing to the recent literature on collective mental time travel.

La Transmisión Transgeneracional de Situaciones Traumáticas: Papel de la Psicología en el Proceso de Recuperación de la Memoria Colectiva de la Dictadura Franquista en España / The Transgenerational Transmission of Traumatic Situations: The Role of Psychology in the Process of Recovery of the Collective Memory of the Franco Dictatorship in Spain

En este trabajo se hacen algunas consideraciones sobre la memoria y el olvido, se describen complejos procesos emocionales individuales y familiares que dan lugar a determinados estados psicológicos colectivos que suelen configurarse bajo las dictaduras y los estados totalitarios. Reflexiones que se enmarcan en el contexto de la reciente historia de España y que ayudarán a comprender, al menos en parte, el enorme retraso que la recuperación de la memoria ha tenido en nuestro país. Estas aportaciones están apoyadas en fuentes históricas, sociológicas, literarias y basadas en la teoría y la práctica clínica psicológica aplicada a tratamientos individuales, de familia y de grupos. (AU)

In this work, some considerations are made about memory and forgetting, complex individual and family emotional processes that give rise to certain collective psychological states that are usually configured under dictatorships and totalitarian states are described. These reflections are framed in the context of Spain’s recent history and will help to understand, at least in part, the enormous delay that the recovery of memory has had in our country. These contributions are supported by historical, sociological, and literary sources and based on psychological theory and clinical practice applied to individual, family, and group treatments. (AU)

La Transmisión Transgeneracional de Situaciones Traumáticas: Papel de la Psicología en el Proceso de Recuperación de la Memoria Colectiva de la Dictadura Franquista en España / The Transgenerational Transmission of Traumatic Situations: The Role of Psychology in the Process of Recovery of the Collective Memory of the Franco Dictatorship in Spain

En este trabajo se hacen algunas consideraciones sobre la memoria y el olvido, se describen complejos procesos emocionales individuales y familiares que dan lugar a determinados estados psicológicos colectivos que suelen configurarse bajo las dictaduras y los estados totalitarios. Reflexiones que se enmarcan en el contexto de la reciente historia de España y que ayudarán a comprender, al menos en parte, el enorme retraso que la recuperación de la memoria ha tenido en nuestro país. Estas aportaciones están apoyadas en fuentes históricas, sociológicas, literarias y basadas en la teoría y la práctica clínica psicológica aplicada a tratamientos individuales, de familia y de grupos. (AU)

In this work, some considerations are made about memory and forgetting, complex individual and family emotional processes that give rise to certain collective psychological states that are usually configured under dictatorships and totalitarian states are described. These reflections are framed in the context of Spain’s recent history and will help to understand, at least in part, the enormous delay that the recovery of memory has had in our country. These contributions are supported by historical, sociological, and literary sources and based on psychological theory and clinical practice applied to individual, family, and group treatments. (AU)

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.

Understanding Collective Intelligence: Investigating the Role of Collective Memory, Attention, and Reasoning Processes.

As society has come to rely on groups and technology to address many of its most challenging problems, there is a growing need to understand how technology-enabled, distributed, and dynamic collectives can be designed to solve a wide range of problems over time in the face of complex and changing environmental conditions-an ability we define as "collective intelligence." We describe recent research on the Transaction Systems Model of Collective Intelligence (TSM-CI) that integrates literature from diverse areas of psychology to conceptualize the underpinnings of collective intelligence. The TSM-CI articulates the development and mutual adaptation of transactive memory, transactive attention, and transactive reasoning systems that together support the emergence and maintenance of collective intelligence. We also review related research on computational indicators of transactive-system functioning based on collaborative process behaviors that enable agent-based teammates to diagnose and potentially intervene to address developing issues. We conclude by discussing future directions in developing the TSM-CI to support research on developing collective human-machine intelligence and to identify ways to design technology to enhance it.

Toward Understanding of the Social Hysteresis: Insights From Agent-Based Modeling.

Hysteresis has been used to understand various social phenomena, such as political polarization, the persistence of the vaccination-compliance problem, or the delayed response of employees in a firm to wage incentives. The aim of this article is to show the insights that can be gained from using agent-based models (ABMs) to study hysteresis. To build up an intuition about hysteresis, we start with an illustrative example from physics that demonstrates how hysteresis manifests as collective memory. Next, we present examples of hysteresis in psychology and social systems. We then present two simple ABMs of binary decisions-the Ising model and the q-voter model-to explain how hysteresis can be observed in ABMs. Specifically, we show that hysteresis can result from the influence of various external factors present in social systems, such as organizational polices, governmental laws, or mass media campaigns, as well as internal noise associated with random changes in agent decisions. Finally, we clarify the relationship between several closely related concepts such as order-disorder transitions or bifurcation, and we conclude the article with a discussion of the advantages of ABMs.

Percepciones de paz y conflicto armado en actores escolares

El objetivo de este artículo es describir las percepciones de estudiantes y padres de familia relacionadas con el conflicto armado y la paz. Corresponde a un estudio cualitativo de nivel descriptivo enmarcado en el paradigma interpretativo-hermenéutico. Se emplearon los métodos análisis de discurso y teoría fundamentada, y se contó con la participación de 35 actores escolares de una institución educativa en Colombia, a quienes se les aplicó una entrevista en profundidad. Los datos fueron codificados y categorizados, y sistematizados a través del software Atlas Ti. Los resultados muestran siete categorías selectivas, 18 códigos axiales y 231 códigos abiertos, los cuales develan las distintas formas de percepción en torno a la paz y al conflicto armado de los actores escolares. Se sugieren gramáticas heterogéneas en torno a la paz y el conflicto armado con marcos interpretativos amplios y estrategias de escucha flexibles.

The objective of the article is to describe the perceptions of students and parents related to the armed conflict and peace. It corresponds to a qualitative study of descriptive level, framed in the interpretive-hermeneutical paradigm. Discourse analysis and grounded theory methods were used, and 35 school actors from an educational institution in Colombia participated, to whom an in-depth interview was applied. The data was coded, categorized, and systematized through the Atlas Ti software. The results show seven selective categories, 18 axial codes, and 231 open codes, which reveal the different forms of perception around peace and armed conflict of school actors. Heterogeneous grammars are suggested around peace and armed conflict with broad interpretive frameworks and flexible listening strategies.

Cartografías artísticas: jóvenes autores de la construcción del pasado reciente

(analítico) Se presentan los resultados de una investigación que buscó conocer las maneras como los jóvenes construyen sus ideas e imaginarios sobre el pasado reciente en Colombia. El proyecto fue desarrollado en la ciudad de Manizales y contó con la participación de 24 jóvenes entre los 12 y 18 años de edad. El estudio se desarrolló por medio de cartografías de experiencias que se vinculan al pasado reciente y la reconstrucción de la memoria colectiva. Se encontró que los jóvenes emplean signos que se han utilizado tradicionalmente para representar la paz y la memoria, además, que los procesos dialógicos y creativos favorecen los espacios de reflexión en los cuales se trascienden estos signos y se construyen significados más amplios que a su vez les permiten narrar experiencias de vida.

(analytical) This article presents the results of a research project that sought to understand the ways in which young people construct their ideas and imaginaries about the recent past in Colombia. The research was conducted in the city of Manizales with the participation of 24 young people between 12 and 18 years of age. The research was carried out using cartographies of experiences from the recent past and the reconstruction of collective memory. It was identified that young people use signs that have been traditionally used to represent peace and memory. Dialogue and creative processes generate reflection spaces in which these signs are transcended and broader meanings are constructed, which in turn allow them to narrate their life experiences.

(analítico) Este artigo apresenta os resultados de um projeto de pesquisa que procurou compreender as formas pelas quais os jovens constroem suas idéias e imaginários sobre o passado recente na Colômbia. O projeto foi desenvolvido na cidade de Manizales, com a participação de 24 jovens entre 12 e 18 anos de idade. A pesquisa foi desenvolvida por meio de experiências de mapeamento ligadas ao passado recente e à reconstrução da memória coletiva. Constatou-se que os jovens utilizam sinais que tradicionalmente são usados para representar a paz e a memória, e que os processos dialógicos e criativos favorecem espaços de reflexão nos quais esses sinais são transcendidos e significados mais amplos são construídos, o que por sua vez lhes permite narrar experiências de vida.

Collective memory: between individual systems of consciousness and social systems.

Following a long period of neglect, research on different facets of collective memory is now developing apace in the human and social sciences, as well as at their interface with psychology and neuroscience. This resolutely multidisciplinary renewal of interest in memory sciences has given rise to a plethora of concepts with diverse meanings (e.g., social frameworks of memory, collective, shared, collaborative, social memory). The purpose of the present study was to provide a conceptual overview from a historical perspective, and above all to clarify concepts that are often used interchangeably, even though they refer to very different realities. Based on recent research in psychology and neuroscience, we use the concept of collective memory to refer to the operations of individual systems of consciousness. Collective memory is not the memory of a collective, but that of its individual members, either as members of social groups (shared memory) or as participants in social interactions (collaborative memory). Drawing on the contributions of contemporary sociology, we show that social memory is not collective memory, as it refers not to individual systems of consciousness, but to social systems. More specifically, it is the outcome of communication operations which, through redundancy and repetition, perform a continuous and selective re-imprinting of meaning that can be used for communication. Writing, printing and the new communication technologies constitute the three historical stages in the formation and development of an autonomous social memory, independent of living memories and social interactions. In the modern era, mass media fulfill an essential function of social memory, by sorting between forgetting and remembering on a planetary scale. When thinking about the articulation between collective memory and social memory, the concept of structural coupling allows us to identify two mechanisms by which individual systems of consciousness and social systems can interact and be mutually sensitized: schemas and scripts, and social roles. Transdisciplinary approach spearheads major methodological and conceptual advances and is particularly promising for clinical practice, as it should result in a better understanding of memory pathologies, including PTSD, but also cognitive disorders in cancer (chemobrain) or in neurodegenerative diseases.

Memory in the digital age.

This article explores the configuration of collective memory under the impact of the digital turn. In recent debates, there has been a marked tendency to interpret 'digital memory' as a new type of memory, which is radically different from the traditional conceptualization. Even leading authors in the field claim that the digital revolution implies the end of collective memory. However, I argue that despite the transformations that memory undergoes in the digital age, these changes do not imply a new ontology of memory but rather a materialization of the theoretical claims made by Memory Studies since the field's inception. To support this hypothesis, I analyze digital memory in relation to three topics: first, I focus on the problematic definition of collective memory to demonstrate how the digital realm allows us to rethink the social nature of memory through a different concept of the social. By contrasting Halbwachs' notion of the social, which forms the basis of memory studies, with the alternative proposal of Gabriel Tarde, I argue that the latter enables us to refine the concept of the 'collective' that we have inherited from the founding figure of memory studies. Second, I delve into the new ontology of the digital archive showing how it materializes one of the defining features of collective memory: its mobile, dynamic, and procedural nature. Lastly, I address the inversion of the dialectic between memory and forgetting to highlight the specificity of these practices in the digital environment. I demonstrate how these changes effectively implement, surpassing older technologies, the concept of collective memory as a distributed and dynamic technological process that shapes our shared representations of the past.

In everyday language, memory is conceived of as an individual faculty; however, remembering is an eminently social act. Societies elaborate representations of the past that are fundamental to the constitution of their identity. Following this, the field of memory studies has explored the way collective memory, the relationship that a social group establishes with 'its' past, is socially constructed and circulates, as well as its multiple effects on our experience of the present. One of the fundamental insights of memory studies is that memory is always mediated. Different media shape memory in different ways, providing memory with specific affordances and constraints. If the advent of writing in early civilisation radically altered the constitutions of memory cultures, and the invention of print marked a new shift putting memory in circulation in an unprecedented way, the onset and spread of digital media signals the more recent revolution in collective memory and mnemonic communities. This article explores the configuration of collective memory under the impact of the digital turn. Recent debates suggest that 'digital memory' is a completely new form of memory that is fundamentally different from traditional memory. I argue that while memory has certainly transformed in the digital age, these changes don't create a new type of memory but materialize the theoretical claims made by memory studies from its inception. To support this argument, I examine digital memory in three key aspects. First, I discuss the definition of collective memory and how the digital realm allows us to reconsider the social nature of memory. Second, I explore the new nature of digital archives and how they embody the essential characteristics of collective memory: mobility, dynamism, and procedural nature. Lastly, I address the inversion of the dialectic between memory and forgetting to highlight the specificity of these practices in the digital environment.

The philosophy of collective memory in the novel "The Buried Giant" by Kazuo Ishiguro.

Memory is a major theme running through Kazuo Ishiguro's works, one of which is The Buried Giant. This study aims to analyze the concept of collective memory in Kazuo Ishiguro's novel The Buried Giant through hermeneutic interpretation and sociological analysis. The results show that this novel links collective memory with individual experience and generational identity whilst making aging a central element in the exploration of time and history. In the novel, collective memory is seen through the prism of aging. The aging characters serve as a metonymy to convey the image of memory. They find themselves in circumstances broadcasting a horrific story of decline and marginalization of the nation because they cannot access the past and move into the future. They revisit the story of their lives, but even though they can recount their losses, they do not seem to be critical of their past choices or their responsibilities in the global conflicts they lived through. In The Buried Giant, the aging characters are the ones who come to terms with their individual and collective histories to face their remaining years. This is not an idealized vision of wisdom; rather, it is an acceptance of complicity and guilt. The results can be applied in literary, sociological, and historical studies concerning the collective memory of different historical periods. They are of practical value as they contribute to the study of collective memory in literary theory. Research on collective memory in literature sheds light on the ways historical events and shared experiences impact human behavior, beliefs, and decision-making processes.

Who Were We? Exploring French Past Group Prototypes.

Groups have cognitive existence through the prototype of the group (Haslam et al., 1995; https://doi.org/10.1002/ejsp.2420250504). Past group prototypes then refer to the most representative characteristics that define the group in these previous states. We suppose, as collective events might have different versions associated with different valences (Zaromb et al., 2014; https://doi.org/10.3758/s13421-013-0369-7), this might also be the case for prototypes also held in the collective memory (Halbwachs, 1950; http://dx.doi.org/doi:10.1522/cla.ham.mem1). After highlighting different facets of the past (Study 1) or not (Study 2), we used the "free association method" (Lo Monaco et al., 2017; https://doi.org/10.1111/jtsb.12124; Vergès, [1992], L'évocation de l'argent. Bulletin de Psychologie, 45(4-7), 203-209). Yet, this research explored the content of past prototypes associated with different elements of French collective memory: the French during the Second World War (Study 1, N = 301), and French people in 18th century (Study 2, N = 354). Results suggest the existence for each of these periods of a "two-sided" prototype, i.e., a positive vs. negative-valence prototype. The implications of the existence of these "two-sided" prototypes, the implication of collective continuity perceived for each of them and avenues for future research will be discussed.

The fragility of artists' reputations from 1795 to 2020.

This study explores the longevity of artistic reputation. We empirically examine whether artists are more- or less-venerated after their death. We construct a massive historical corpus spanning 1795 to 2020 and build separate word-embedding models for each five-year period to examine how the reputations of over 3,300 famous artists-including painters, architects, composers, musicians, and writers-evolve after their death. We find that most artists gain their highest reputation right before their death, after which it declines, losing nearly one SD every century. This posthumous decline applies to artists in all domains, includes those who died young or unexpectedly, and contradicts the popular view that artists' reputations endure. Contrary to the Matthew effect, the reputational decline is the steepest for those who had the highest reputations while alive. Two mechanisms-artists' reduced visibility and the public's changing taste-are associated with much of the posthumous reputational decline. This study underscores the fragility of human reputation and shows how the collective memory of artists unfolds over time.

Collective events and individual affect shape autobiographical memory.

How do collective events shape how we remember our lives? We leveraged advances in natural language processing as well as a rich, longitudinal assessment of 1,000 Americans throughout 2020 to examine how memory is influenced by two prominent factors: surprise and emotion. Autobiographical memory for 2020 displayed a unique signature: There was a substantial bump in March, aligning with pandemic onset and lockdowns, consistent across three memory collections 1 y apart. We further investigated how emotion, using both immediate and retrieved measures, predicted the amount and content of autobiographical memory: Negative affect increased recall across all measures, whereas its more clinical indices, depression and posttraumatic stress disorder, selectively increased nonepisodic recall. Finally, in a separate cohort, we found pandemic news to be better remembered, surprising, and negative, while lockdowns compressed remembered time. Our work connects laboratory findings to the real world and delineates the effects of acute versus clinical signatures of negative emotion on memory.

[Memory and traumatism: From biology to humanities]. / Mémoire et traumatisme : de la biologie aux sciences sociales.

This article is a brief Introduction to a series of articles issued from the Journée Claude Bernard, organized at the Académie Nationale de Médecine. This session had for thematic "Memory and traumatism" and was composed of presentations coming from different disciplines including biological sciences and humanities. Several publications come from the Programme 13-Novembre, devoted to a traumatic event in French society - the attacks of 13 November 2015 in Paris and its immediate suburbs - and its consequences on the construction of individual and collective memories of this tragic event.

Title: Mémoire et traumatisme : de la biologie aux sciences sociales. Abstract: Cet article est une brève Introduction à une série d'articles issus de la Journée Claude Bernard, organisée à l'Académie Nationale de Médecine le 24 novembre 2021. Cette Journée, dont le thème était « Mémoire et traumatisme ¼, avait pour originalité de présenter des travaux provenant de disciplines différentes allant des sciences biologiques aux sciences humaines et sociales. Plusieurs publications s'appuient sur le Programme 13-Novembre, qui envisage les conséquences des attentats du 13 novembre 2015 sur la construction des mémoires individuelles et collectives de cet événement dramatique.

[The Programme 13-Novembre between individual memory and collective memory]. / Le Programme 13-Novembre entre mémoire individuelle et mémoire collective.

The purpose of this article is to present the evolution of scientific work on human memory from the end of the 19th century. The work of experimental psychology and neuropsychology first dominated the scientific scene. Research in the humanities and social sciences was established in the interwar period, but without any real interaction with psychology and neurosciences. We recall the most emblematic historical works of two distinct visions of memory: those of the experimental psychologist Hermann Ebbinghaus who measured memory, on himself, from lists of meaningless syllables, and those of the sociologist Maurice Halbwachs for whom any act of memory is a social act. This disciplinary closure persisted until the end of the 20th century. A real social shift has taken place since the 2000s, with a desire to studying and understanding the interactions between individual and collective memories. In this article, the authors argue for the emergence of "sciences of memory" based on dialectic and transdisciplinarity. They draw on the Programme 13-Novembre that is emblematic of this evolution. The Programme 13-Novembre has seized upon a diversity of research tools on memory by applying them to a traumatic event in French society: the attacks of 13 November 2015 in Paris and its immediate suburbs. Its genesis, its overall architecture and several of its components are presented here, as well as a few results already published. In addition to its theoretical scope, this work has many possible applications, particularly in the understanding and management of various pathologies, post-traumatic stress disorder being the most demonstrative in this respect.

Title: Le Programme 13-Novembre entre mémoire individuelle et mémoire collective. Abstract: Cet article a pour objectif de présenter l'évolution des travaux scientifiques sur la mémoire humaine de la fin du 19e siècle à aujourd'hui. Les travaux de psychologie expérimentale et de neuropsychologie ont d'abord dominé la scène scientifique. Des recherches en sciences humaines et sociales se sont mises en place dans l'entre-deux-guerres, mais sans réelle interaction avec celles menées en psychologie et en neurosciences. Cette clôture disciplinaire a persisté jusqu'à la fin du 20e siècle. Un véritable tournant social s'est opéré depuis les années 2000 avec comme volonté d'étudier et de comprendre les interactions entre mémoires individuelles et mémoires collectives. Dans cet article, les auteurs plaident pour l'émergence de « sciences de la mémoire ¼ fondées sur la dialectique et la transdisciplinarité. Ils s'appuient sur le Programme 13-Novembre, emblématique de cette évolution. Sa genèse, son architecture d'ensemble et plusieurs de ses composantes sont présentées ici ainsi que quelques résultats déjà publiés. Outre leur portée théorique, ces travaux rendent possibles de nombreuses applications, en particulier dans la compréhension et la prise en charge de différentes pathologies, le trouble de stress post-traumatique étant la plus démonstrative à cet égard.

[Collective memory and social memory: contributions of sociology to a general theory of memory]. / Mémoire collective et mémoire sociale : apports de la sociologie à une théorie générale de la mémoire.

Is a general theory of memory possible? What contribution can sociology make to this vast scientific project? Two original contributions are presented and discussed in this article: (1) the concept of collective memory (Maurice Halbwachs); (2) the concept of social memory (Niklas Luhmann). The author proposes some important theoretical clarifications. First, memory is neither a stock nor a collection (of past states or events) but rather a continuous operation of sorting between remembering and forgetting. Secondly, collective memory is not social memory: indeed, the former is a specific operation of psychic systems whereas the latter is an operation of communication, specific to social systems. In the particular case of the attacks of November 13, 2015 in Paris, the author shows the function of social memory that the mass media system fulfills and how these operations of filtering meaning condition the construction of traumatic memories.

Title: Mémoire collective et mémoire sociale : apports de la sociologie à une théorie générale de la mémoire. Abstract: Une théorie générale de la mémoire est-elle possible ? Quelle contribution la sociologie peut-elle apporter à ce vaste projet scientifique ? Deux contributions originales sont présentées et discutées dans cet article : (1) le concept de mémoire collective (Maurice Halbwachs) ; (2) le concept de mémoire sociale (Niklas Luhmann). L'auteur propose quelques clarifications théoriques importantes. D'abord, la mémoire n'est ni un stock ni une collection (d'états ou d'événements passés) mais plutôt une opération continue de tri entre souvenir et oubli. Ensuite, la mémoire collective n'est pas la mémoire sociale : en effet, la première est une opération spécifique des systèmes psychiques ; quant à la seconde, elle est une opération de communication, propre aux systèmes sociaux. Dans le cas particulier des attentats du 13 novembre 2015 à Paris, l'auteur montre la fonction de mémoire sociale que remplit le système des médias de masse et comment ces opérations de filtrage du sens conditionnent la construction de souvenirs traumatiques.