Lewis [3] argues that, generally, we ought to conform to conventions because that answers (1) our own preferences, and (2) the preferences of others. While (1) is based on instrumental rationality, (2) is based on a moral principle or norm: other things being equal, we should do what answers others’ preferences. Bicchieri [1] claims there is a third kind of normativity, neither rational nor moral, that applies to social norms. I argue that conventions draw their normativity from instrumental rationality and (...) other independent moral principles or norms, and that it is unclear what further normativity could there be. (shrink)

Unrecognized conventions—practices that are conventional even though their participants do not recognize them as such—play central roles in shaping our lives. They range from the indispensable (e.g. unrecognized linguistic conventions) to the insidious (e.g. some of our gender conventions). Unrecognized conventions pose a challenge for accounts of conventions because it is difficult to incorporate the distinctive arbitrariness of conventions—the fact that conventions always have alternatives—without accidentally excluding many unrecognized conventions. I develop an Accessibility Requirement that allows us to account for (...) both arbitrariness and unrecognized conventions. Specifically, I argue that a conventional practice must have at least one alternative that is at least approximately as good and at least approximately as accessible as the conventional practice itself, independent of the dominance the practice gained as it became conventional. In the course of arguing for this requirement, I also show that two prominent accounts of conventions, David Lewis’s and Ruth Garrett Millikan’s, run into problems with capturing the arbitrariness of conventions. The Accessibility Requirement opens the door to improved accounts of conventions by precisely identifying the way in which conventions are arbitrary. (shrink)

I argue that cultural conventions such as social etiquette facilitate a specific (non‐Lewisian) kind of action coordination—role–interaction coordination—that is required for division of labour. Playing one's roles and coordinating them with those of others is a form of multitasking. Such multitasking is made possible on a large scale because we can offload cognition aimed at coordination onto a stable infrastructure of cultural conventions. Our natural tendency to prefer multitasking in instances where one task requires low cognitive control can thus explain (...) our preference for and expectation of familiar cultural conventions—that is, their perceived normativity. (shrink)

Famously, Kripke has argued that the central portion of the Philosophical Investigations describes both a skeptical paradox and its skeptical solution. Solving the paradox involves the element of the community, which determines correctness conditions for rule-following behavior. What do such conditions precisely consist of? Is it accurate to say that there is no fact to the matter of rule following? How are the correctness conditions sustained in the community? My answers to these questions revolve around the idea that a rule (...) is followed insofar as a convention is in place. In particular, I consider the game-theoretic definition of convention offered by David Lewis and I show that it illuminates essential aspects of the communitarian understanding of rule-following. Make the following experiment: say “It’s cold here” and mean “It’s warm here”. Can you do it?Ludwig Wittgenstein, Philosophical Investigations, 1953, §510.I can’t say “it’s cold here” and mean “it’s warm here”—at least, not without a little help from my friends.David Lewis, Convention. (shrink)

In this paper I put forward a thesis regarding the anatomy of “cultural evolution”, in particular the way the “cultural” transmission of behavioral patterns came to piggyback, through us humans, on the transmission effected by genetic evolution. I claim that what grounds and supports this new kind of transmission is a complex behavioral “meta-pattern” that makes it possible to grasp a pattern as something that “ought to be”, i.e. that transforms the pattern into what we can call a rule. (Here (...) I draw especially on the philosophical insights of Wilfrid Sellars.) In this way I interlink empirical research done in evolution theory with some more speculative philosophical theories, thus shedding new light on the former and adding an empirical footing to the latter. (shrink)

In this paper, I outline and defend the view that variations in compliance levels with one and the same norm represent differentnorms about following norms. In support of this claim, I first argue that classic game-theoretic accounts, which define norms as Nash equilibria of noncooperative games, typically consider variations in compliance levels as separate norms. After that, I suggest a more fine-grained, game-theoretic distinction that accounts for degrees of compliance with the same norm and I show how to incorporate such (...) an account into a psychological framework. Finally, the paper examines what given degrees of compliance can reveal about the dynamics underlying the process of norm change. I will argue that they are indicators of different reactions to the introduction of new norms. (shrink)

One of the conceptual limitations of the orthodox game theory is its inability to offer definitive theoretical predictions concerning the outcomes of noncooperative games with multiple rationalizable outcomes. This prompted the emergence of goal-directed theories of reasoning – the team reasoning theory and the theory of hypothetical bargaining. Both theories suggest that people resolve non-cooperative games by using a reasoning algorithm which allows them to identify mutually advantageous solutions of non-cooperative games. The primary aim of this thesis is to enrich (...) the current debate on goaldirected reasoning theories by studying the extent to which the principles of the bargaining theory can be used to formally characterize the concept of mutual advantage in a way which is compatible with some of the conceptually compelling principles of orthodox game theory, such as individual rationality, incentive compatibility, and non-comparability of decision-makers’ personal payoffs. I discuss two formal characterizations of the concept of mutual advantage derived from the aforementioned goal-directed reasoning theories: A measure of mutual advantage developed in collaboration with Jurgis Karpus, which is broadly in line with the notion of mutual advantage suggested by Sugden, and the benefit-equilibrating bargaining solution function, which is broadly in line with the principles underlying Conley and Wilkie’s solution for Pareto optimal point selection problems with finite choice sets. I discuss the formal properties of each solution, as well as its theoretical predictions in a number of games. I also explore each solution concept’s compatibility with orthodox game theory. I also discuss the limitations of the aforementioned goal-directed reasoning theories. I argue that each theory offers a compelling explanation of how a certain type of decision-maker identifies the mutually advantageous solutions of non-cooperative games, but neither of them offers a definitive answer to the question of how people coordinate their actions in non-cooperative social interactions. (shrink)

Recently, game theory and evolutionary game theory - mathematical frameworks from economics and biology designed to model and explain interactive behavior - have proved fruitful tools for philosophers in areas such as ethics, philosophy of language, social epistemology, and political philosophy. This methodological osmosis is part of a trend where philosophers have blurred disciplinary lines to import the best epistemic tools available. In this vein, experimental philosophers have drawn on practices from the social sciences, and especially from psychology, to expand (...) philosophy's grasp on issues from morality to consciousness. We argue that the recent prevalence of formal work on human interaction in philosophy opens the door for new methods in experimental philosophy. In particular, we discuss methods from experimental economics, focusing on a small literature we have been developing investigating signaling and communication in humans. We describe results from a novel experiment showing how environmental structure can shape signaling behavior. (shrink)