There seems to exist a general consensus on how to conceptualize cooperation in the field of international relations (IR). We argue that this impression is deceptive. In practice, scholars working on the causes of international cooperation have come to implicitly employ various understandings of what cooperation is. Yet, an explicit debate about the discipline's conceptual foundations never materialized, and whatever discussion occurred did so only latently and without much dialog across theoretical traditions. In this paper, we develop an updated conceptual framework by exploring the nature of these differing understandings and situating them within broader theoretical conversations about the role of cooperation in IR. Drawing on an array of studies in IR and philosophy, our framework distinguishes between three distinct types of cooperative state interactions – cooperation through tacit policy coordination (‘minimal’ cooperation), cooperation through explicit policy coordination (‘thin’ cooperation), and cooperation based on joint action (‘thick’ cooperation). The framework contributes to better theorization about cooperation in two main ways: it allows scholars across theoretical traditions to identify important sources of disagreement and previously unnoticed theoretical common ground; and the conceptual disaggregation it provides grants scholars crucial theoretical leverage by enabling type-specific causal theorization.

Despite growing appreciation in recent decades of the importance of shared intentional mental states as a foundation for everything from divergences in primate evolution, to the institution of communal norms, to trends in the development of modernity as a sociopolitical phenomenon, we lack an adequate understanding of the relationship between individual and shared intentionality. At the same time, it is widely appreciated that deontic reasoning concerning what ought, may, and ought not be done is, like reasoning about our intentions, an exercise of practical rationality. Taking advantage of this fact, I use a plan-theoretic semantics for the deontic modalities as a basis for understanding individual and shared intentions. This results in a view that accords well with what we currently have reason to believe about the phylogenetic and ontogenetic development of norm psychology and shared intentionality in human beings, and where original intentionality can be understood in terms of the shared intentionality of a community.

Jennifer Lackey (2016) challenged group acceptance accounts of justification by arguing that these accounts make the possession of evidence arbitrary and hence lead to illegitimate manipulation of the group's evidence. She proposes that the only way out is to rely on the epistemic propriety of the individual group members, which leads to a dilemma for group acceptance views: either they are wrong about justification, or they cease to rely only on group acceptances. I argue that there is a third option based on general expectations of epistemic propriety that restricts the group's maximal justification. A group cannot be more justified than any individual in the group's position could be expected to be. I motivate this solution by a discussion of normative defeat and epistemic expectations as proposed by Goldberg (2018).

Does Kantian moral agency require phenomenal consciousness? More to the point, can firms (and other highly organized collectives) be Kantian moral agents—bound by Kantian obligations—in the absence of consciousness? After sketching the mechanics of my account of corporate agents, I consider three increasingly demanding accounts of Kantian moral agency, concluding that corporate agents can meet each successively higher threshold. They can (1) act on universalizable principles and treat humanity as an end in itself; (2) give such principles to themselves, treat their own ‘humanity’ as an end itself, and act out of respect for the law; and (3) to the extent necessary, draw on empathically generated information and insights to inflect their performance, all in the absence of phenomenal consciousness. I close by rejecting two further arguments that phenomenal consciousness is nonetheless conceptually or practically necessary for Kantian moral agency.

If group members aim to fulfil a collective obligation, they must act in such a way that the composition of their individual actions amounts to a group action that fulfils the collective obligation. We study a strong sense of joint action in which the members of a group design and then publicly adopt a group plan that coordinates the individual actions of the group members. We characterize the conditions under which a group plan successfully coordinates the group members’ individual actions, and study how the public adoption of a plan changes the context in which individual agents make a decision about what to do.

There is a well-developed view of artifacts according to which their nature depends on the intentions of their authors or creators. However, in the modern world of artifact design and creation, typically not one but many agents are involved in the process of making an artifact. In this paper, I show how the intentional view can be maintained even for ‘collective’ artifacts having multiple authors. My approach is to combine some basic concepts that have been proposed in the study of collective intentionality with a suitable model of artifact creation that takes account of the multiple agents and processes that arise in design, engineering and manufacturing a new or existing product. In this way, we can explain how an artifactual kind can be understood via a form of collective intentionality. For the design sciences, notions such as we-intentionality and group agency can help to model different types of cooperation and, in particular, to reconcile individualism with strong forms of collectivity at a group level.