This collection does not only include articles by Raimo Tuomela and his co-authors which have been decisive in social ontology. An extensive introduction provides an account of the impact of the works, the most important debates in the field, and also addresses future issues. Thus, the book gives insights that are still viable and worthy of further scrutiny and development, making it an inspiring source for those engaged in the debates of the field today.

Concepts based on full-blown collective intentionality (aboutness), viz., we-mode intentionality, are central for understanding and explaining the social world. The book systematically studies social groups, acting in them as a group member, collective commitment, group intentions, beliefs, and actions, especially authority-based group attitudes and actions. There are also chapters on cooperation, social institutions, cultural evolution, and group responsibility.

Social ontology, in its broadest sense, is the study of the nature of social reality, including collective intentions and agency. The starting point of Tuomela's account of collective intentionality is the distinction between thinking and acting as a private person ("I-mode") versus as a "we-thinking" group member ("we-mode"). The we-mode approach is based on social groups consisting of persons, which may range from simple task groups consisting of a few persons to corporations and even to political states. Tuomela extends the we-mode notion to cover groups controlled by external authority. Thus, for instance, cooperation and attitude formation are studied in cases where the participants are governed "from above" as in many corporations.
The volume goes on to present a systematic philosophical theory related to the collectivism-versus-individualism debate in the social sciences. A weak version of collectivism (the "we-mode" approach) depends on group-based collective intentionality. We-mode collective intentionality is not individualistically reducible and is needed to complement individualistic accounts in social scientific theorizing. The we-mode approach is used in the book to account for collective intention and action, cooperation, group attitudes, and social practices and institutions, as well as group solidarity. Tuomela establishes the first complete theory of group reasons (in the sense of members' reasons for participation in group activities). The book argues in terms of game-theoretical group-reasoning that the kind of weak collectivism that the we-mode approach involves is both conceptually and rational-functionally different from what an individualistic approach ("pro-group I-mode" approach) entails.

This volume contains the proceedings of the Social Ontology, Normativity, and Philosophy of Law conference, which took place on May 30-31, 2019 at the University of Glasgow. At the invitation of the Social Ontology Research Group, a panel of prominent scholars shed light on normativity from the perspective of social ontology and the philosophy of law.

Social ontology, in its broadest sense, is the study of the nature of social reality, including collective intentions and agency. The starting point of Tuomela's account of collective intentionality is the distinction between thinking and acting as a private person ("I-mode") versus as a "we-thinking" group member ("we-mode"). The we-mode approach is based on social groups consisting of persons, which may range from simple task groups consisting of a few persons to corporations and even to political states. Tuomela extends the we-mode notion to cover groups controlled by external authority. Thus, for instance, cooperation and attitude formation are studied in cases where the participants are governed "from above" as in many corporations. The volume goes on to present a systematic philosophical theory related to the collectivism-versus-individualism debate in the social sciences. A weak version of collectivism (the "we-mode" approach) depends on group-based collective intentionality. We-mode collective intentionality is not individualistically reducible and is needed to complement individualistic accounts in social scientific theorizing. The we-mode approach is used in the book to account for collective intention and action, cooperation, group attitudes, and social practices and institutions, as well as group solidarity. Tuomela establishes the first complete theory of group reasons (in the sense of members' reasons for participation in group activities). The book argues in terms of game-theoretical group-reasoning that the kind of weak collectivism that the we-mode approach involves is both conceptually and rational-functionally different from what an individualistic approach ("pro-group I-mode" approach) entails.

The Philosophy of Sociality examines the nature of sociality in its various forms, with special emphasis on collective intentionality. Raimo Tuomela begins with a distinction between the "we-perspective" and the "I-perspective." His study of strong collective intentionality -- as expressed by joint intentions, collective commitment, group belief, authority-based group action, and other phenomena -- outlines the circumstances under which an individual is required to think and act as a group member. By developing a systematic theory of sociality, Tuomela investigates such topics as social institutions, cooperation, cultural evolution, and group responsibility.
In The Philosophy of Sociality Tuomela asserts that "we-mode" collective intentionality is a conceptual prerequisite for understanding basic social notions. He finds several contexts in which we-mode intentionality is preferable to "pro-group" I-mode intentionality. He ultimately defends a naturalistic view of the social world by arguing that the we-mode is a genetic and cultural adaptaion.

Der Band ist mehr als eine Aufsatzsammlung, die Beitrage sind aufeinander aufgebaut und dicht miteinander vernetzt. Zusammengenommen wird damit ein neues Paradigma der Erklarung geschaffen. Grossere Vorkenntnisse sind nicht erforderlich. Die Beitrage dieses Bandes folgen zwei miteinander zusammenhangenden Leitlinien: Zum einen handelt es sich um pragmatisch-epistemische Erklarungsmodelle und zum zweiten wird der Begriff des Verstehens als zentrales Moment von Erklarung wissenschaftstheoretisch etabliert."

This is a systematic philosophical and conceptual study of the notion of a social practice. Raimo Tuomela explains social practices in terms of the interlocking mental states of the agents; he shows how social practices (for example customs and traditions) are 'building blocks of society'; and he offers a clear and powerful account of the way in which social institutions are constructed from these building blocks as established, interconnected sets of social practices with a special new social status. His analysis is based on the novel concept of shared 'we-attitudes', which represent a weak form of collective intentionality, and he makes instructive connections to major topics and figures in philosophy and the social sciences. His book will be of interest to a wide range of readers in philosophy of mind, philosophy of social science, psychology and sociology, and artificial intelligence.

This philosophical and conceptual study shows how social practices (customs and traditions) are "building blocks of society." Raimo Tuomela systematically reveals how social institutions are constructed from these "building blocks." His analysis is based on the novel concept of shared "we-attitudes," which represent a weak form of collective intentionality, and he makes instructive connections to major topics and figures in philosophy and the social sciences.