Information is a central notion for cognitive sciences and neurosciences, but there is no agreement on what it means for a cognitive system to acquire information about its surroundings. In this paper, we approximate three influential views on information: the one at play in ecological psychology, which is sometimes called information for action; the notion of information as covariance as developed by some enactivists, and the idea of information as minimization of uncertainty as presented by Shannon. Our main thesis is (...) that information for action can be construed as covariant information, and that learning to perceive covariant information is a matter of minimizing uncertainty through skilled performance. We argue that the agent’s cognitive system conveys information for acting in an environment by minimizing uncertainty about how to achieve her intended goals in that environment. We conclude by reviewing empirical findings that support our view and by showing how direct learning, seen as instance of ecological rationality at work, is how mere possibilities for action are turned into embodied know-how. Finally, we indicate the affinity between direct learning and sense-making activity. (shrink)

In everyday situations, and particularly in some sport and working contexts, humans face an inherently unpredictable and uncertain environment. All sorts of unpredictable and unexpected things happen but typically people are able to skillfully adapt. In this paper, we address two key questions in cognitive science. First, how is an agent able to bring its previously learned skill to bear on a novel situation? Second, how can an agent be both sensitive to the particularity of a given situation, while remaining (...) flexibly poised for many other possibilities for action? We will argue that both the sensitivity to novel situations and the sensitivity to a multiplicity of action possibilities are enabled by the property of skilled agency that we will call metastable attunement. We characterize a skilled agent’s flexible interactions with a dynamically changing environment in terms of metastable dynamics in agent-environment systems. What we find in metastability is the realization of two competing tendencies: the tendency of the agent to express their intrinsic dynamics and the tendency to search for new possibilities. Metastably attuned agents are ready to engage with a multiplicity of affordances, allowing for a balance between stability and flexibility. On the one hand, agents are able to exploit affordances they are attuned to, while at the same time being ready to flexibly explore for other affordances. Metastable attunement allows agents to smoothly transition between these possible configurations so as to adapt their behaviour to what the particular situation requires. We go on to describe the role metastability plays in learning of new skills, and in skilful behaviour more generally. Finally, drawing upon work in art, architecture and sports science, we develop a number of perspectives on how to investigate metastable attunement in real life situations. (shrink)

Affordances, i.e. the opportunity of actions offered by the environment, are one of the central research topics for the theoretical perspectives that view cognition as emerging from the interaction between the environment and the body. Being at the bridge between perception and action, affordances help to question a dichotomous view of perception and action. While Gibson’s view of affordances is mainly externalist, many contemporary approaches define affordances as the product of long-term visuomotor associations in the brain. These studies have emphasized (...) the fact that affordances are activated automatically, independently from the context and the previous intention to act: for example, affordances related to objects’ size would emerge even if the task does not require focusing on size. This emphasis on the automaticity of affordances has led to overlook their flexibility and contextual-dependency. In this contribution I will outline and discuss recent perspectives and evidence that reveal the flexibility and context-dependency of affordances, clarifying how they are modulated by the physical, cultural and social context. I will focus specifically on social affordances, i.e. on how perception of affordances might be influenced by the presence of multiple actors having different goals. (shrink)

Radical empiricists at the turn of the twentieth century described organisms as experiencing the relations they maintain with their surroundings prior to any analytic separation from their environment. They notably avoided separating perception of the material environment from social life. This perspective on perceptual experience was to prove the inspiration for Gibson’s ecological approach to perceptual psychology. Gibson provided a theory of how the direct perception of the organism-environment relation is possible. Central to his account was the notion of a (...) medium for direct perception. However Gibson provided two mutually inconsistent accounts of the medium leading to problems for his radical empiricism. We develop an account of the medium that does justice to ecological psychology’s radical empiricist roots. To complement this account of the medium we detail a usage-based account of information. Together they allow us to propose a novel radical empiricist view of direct perception. We then return to the notion of medium and expand it to include sociomaterial practices. We show how direct perception happens in the midst of social life, and is made possible by an active achieving and maintaining of a pragmatic relation with the environment. (shrink)

A persisting question in the philosophy of animal minds is which nonhuman animals share our capacity for episodic memory. Many authors address this question by primarily defining EM, trying to capture its seemingly unconstrained flexibility and independence from environmental and bodily constraints. EM is therefore often opposed to clearly context-bound capacities like tracking environmental regularities and forming associations. The problem is that conceptualizing EM in humans first, and then reconstructing how humans evolved this capacity, provides little constraints for understanding the (...) evolution of memory abilities in other species: it defines “genuine” EM as independent from animals’ evolved sensorimotor setup and learning abilities. In this paper, I define memory in terms of perceptual learning: remembering means “knowing what to do in later situations because of past experience in similar earlier situations”. After that, I explain how episodic memory can likewise be explained in terms of perceptual learning. For this, we should consider that the information in animals’ ecological niches is much richer than has hitherto been presumed. Accordingly, instead of asking “given that environmental stimuli provide insufficient information about the cache, what kind of representation does the jay need?” we ask “given that the animal performs in this way, what kind of information is available in the environment?” My aim is not to give a complete alternative explanation of EM; rather, it is to provide conceptual and methodological tools for more zoocentric comparative EM-research. (shrink)

We question the free energy principle (FEP) as it is used in contemporary physics. If the FEP is incorrect in physics, then it cannot ground the authors' arguments. We also question the assumption that perception requires inference. We argue that perception (including perception of social affordances) can be direct, in which case inference is not required.

Education can transform our cognitive world. Recent use of enactivist and enactivist-friendly work to propose understanding transformational learning in terms of affective reframing is a promising first step to understanding how we can have or inculcate transformational learning in different ways without relying on meta-cognition. Building on this work, I argue that to fully capture the kind of perspectival changes that occur in transformational learning we need to further distinguish between ways of reorienting one’s perspective, and I specify why different (...) ways are differently valuable. I propose that recent approaches to Confucian ritual provide a clue to what is missing in characterisations of perspective transformation and the resultant transformed perspective. I argue that focussing on ritualised interpersonal interactions provides a further clue as to what’s missing from a mere appeal to the ritual-based inculcation of new perspectives, namely the kind of lightness and flexibility that some ritualised interactions encourage participants to have, and the deepening of perspective associated with that lightness. I argue that a case study of a project implementing a highly ritualised philosophical practice with prisoners in Scotland shows how these constraints, seemingly paradoxically, function so as to actually deepen the perspectival spaces of those agents. This case study provides a proof of concept for the proposal that certain forms of ritual engagement can reliably bring about the kind of transformation of perspective that is the target phenomenon of transformative learning theory. (shrink)

“I don’t want to create painful shoes, but it is not my job to create something comfortable.” – Christian Louboutin. (in Alexander, 2012) Pain is an essential part of the grooming process, and that...

Action-based theories of cognition place primary emphasis upon the role that agent-environment coupling plays in the emergence of psychological states. Prima facie, mental imagery seems to present a problem for some of these theories because it is understood to be stimulus-absent and thus thought to be decoupled from the environment. However, mental imagery is much more multifaceted than this “naïve” view suggests. Focusing on a particular kind of imagery, comparative mental imagery generation, this paper demonstrates that although such imagery is (...) stimulus-absent, it is also stimulus-sensitive. Exhibiting stimulus-sensitivity is sufficient for a process to qualify as coupled to the environment. The notion of variant coupling is explicated as the coupling of a cognizer’s perceptual system to variant environmental information. By demarcating the categories of stimulus-absent and stimulus-sensitive cognition, and variant and invariant coupling, this paper expands the conceptual apparatus of action-based theories, suggesting not only a way to address the problem that comparative mental imagery generation presents, but perhaps a way to account for other forms of imagery too. (shrink)

Gallagher poses a phenomenologically-inspired challenge to a classical metaphysics of nature which is associated with contemporary natural sciences. This metaphysics can be reconstructed in terms of two distinct commitments: reductionism and individualism. This comment on Gallagher’s [2019] article attempts to show how a revision of the classical metaphysics can be made intelligible in light of those two commitments. It requires a strong interpretation of the ecological framework for understanding cognition. Such a revision would give agency a central place in the (...) revised metaphysics of nature. (shrink)

Ecological-enactive approaches to cognition aim to explain cognition in terms of the dynamic coupling between agent and environment. Accordingly, cognition of one’s immediate environment (which is sometimes labeled “basic” cognition) depends on enaction and the picking up of affordances. However, ecological-enactive views supposedly fail to account for what is sometimes called “higher” cognition, i.e., cognition about potentially absent targets, which therefore can only be explained by postulating representational content. This challenge levelled against ecological-enactive approaches highlights a putative explanatory gap between (...) basic and higher cognition. In this paper, we examine scientific cognition—a paradigmatic case of higher cognition—and argue that it shares fundamental features with basic cognition, for enaction and affordance selection are central to the scientific enterprise. Our argument focuses on modeling, and on how models promote scientific understanding. We base our argument on a non-representational account of scientific understanding and on the material engagement theory, for models are hereby conceived as material objects designed for scientific engagements. Having done so, we conclude that the explanatory gap is significantly less threatening to the ecological-enactive approach than it might appear. (shrink)

Ecological-enactive approaches to cognition aim to explain cognition in terms of the dynamic coupling between agent and environment. Accordingly, cognition of one’s immediate environment depends on enaction and the picking up of affordances. However, ecological-enactive views supposedly fail to account for what is sometimes called “higher” cognition, i.e., cognition about potentially absent targets, which therefore can only be explained by postulating representational content. This challenge levelled against ecological-enactive approaches highlights a putative explanatory gap between basic and higher cognition. In this (...) paper, we examine scientific cognition—a paradigmatic case of higher cognition—and argue that it shares fundamental features with basic cognition, for enaction and affordance selection are central to the scientific enterprise. Our argument focuses on modeling, and on how models promote scientific understanding. We base our argument on a non-representational account of scientific understanding and on the material engagement theory, for models are hereby conceived as material objects designed for scientific engagements. Having done so, we conclude that the explanatory gap is significantly less threatening to the ecological-enactive approach than it might appear. (shrink)

In order to meet the explanatory challenge levelled against non-representationalist views on cognition, radical enactivists claim that cognition about potentially absent targets involves the socioculturally scaffolded capacity to manipulate public symbols. At a developmental scale, this suggests that higher cognition gradually emerges as humans begin to master language use, which takes place around the third year of life. If, however, it is possible to show that pre-linguistic infants represent their surroundings, then the radical enactivists’ explanation for the emergence of higher (...) cognition is defeated. In this paper, I critically assess experiments designed to show that pre-linguistic infants inherit representational abilities. I begin by outlining these experiments in Sect. 2. In Sect. 3, I argue that these experiments only succeed in supporting widespread representationalism by committing a particular kind of circular reasoning, which I call conjunctivist reasoning due to its origins in the debates about the nature of perception. I conclude by developing two independent yet congruent enactivist lines of interpretation for the experiments discussed in 2. I explain the infants’ responses to atypical experimental conditions based on agent-environment codetermination and then I argue that surprise behavior can be explained in terms of embodied habits and unfulfilled anticipation. (shrink)

Ecological Psychology and Enactivism both challenge representationist cognitive science, but the two approaches have only begun to engage in dialogue. Further conceptual clarification is required in which differences are as important as common ground. This paper enters the dialogue by focusing on important differences. After a brief account of the parallel histories of Ecological Psychology and Enactivism, we cover incompatibility between them regarding their theories of sensation and perception. First, we show how and why in ecological theory perception is, crucially, (...) not based on sensation. We elucidate this idea by examining the biological roots of work in the two fields, concentrating on Gibson and Varela and Maturana. We expound an ecological critique of any sensation-based approach to perception by detailing two topics: classic retinal image theories and perception in single-celled organisms. The second main point emphasizes the importance of the idea of organism-environment mutuality and its difference from structural coupling of sensations and motor behavior. We point out how ecological - phenomenological methods of inquiry grow out of mutualism and compare Gibson’s idea of visual kinesthesis to Merleau-Ponty’s idea of the lived body. Third, we conclude that Ecological Psychology and varieties of Enactivism are laying down different paths to pursue related goals. Thus, convergence of Ecological Psychology and Enactivism is not possible given their conflicting assumptions, but cross-fertilization is possible and desirable. (shrink)

In this paper, we argue that the intentionality at play in skilled performance is not only inherently normative but also inherently affective. We take a radically embodied approach to the mind in which we conceive of cognitive agents as sensorimotor systems moved to maintain their biological and sociocultural identity, whose perception is direct and occurs in terms of affordances. Within this framework, we define skilled performance as the enactment of action and perception patterns in which the agent is intentionally oriented (...) towards specific features in the environment. We propose that skillful intentionality is guided by normative constraints involving the material and social conditions of the agent but is ultimately determined by the intrinsic purpose of maintaining the agent’s identity, and skilled intentionality is inherently affective because it is a specific occurrence arising from a general sense of care to maintain one’s identity which is realized by orienting oneself towards the right aspects of the environment in the right way. Skilled performance thus requires agents to establish a normative and affective intentionality towards aspects of their material environment. We show that, since sociocultural practices shape human identities, sociocultural practices play a crucial role in shaping human intentionality of skilled performance both in their normative and affective dimensions. Maintaining a human identity, we argue, amounts to routinely carrying out activities that form a historical pattern which is shared with and recognized by others. (shrink)

Enactive and ecological approaches to cognitive science both claim a “mutuality” between agents and their environments – that they have a complementary nature and should be addressed as a single whole system. Despite this apparent agreement, each offers criticisms of the other on precisely this point – enactivists claiming that ecological psychologists over-emphasise the environment, while the complementary criticism, of agent-centred constructivism, is levelled by ecological psychologists at enactivists. In this paper I suggest that underlying the confusion between the two (...) approaches is the complexity of agency, which comes in different forms, at different scales or levels of analysis. Cognitive science has not theorised the relationship between these different forms in a sufficiently disciplined manner, and a task therefore remains of finding a way to map the complex territory of agency. (shrink)

This paper proposes three principles for the ethical design of online social environments aiming to minimise the unintended harms caused by users while interacting online, specifically by enhancing the users’ awareness of the moral load of their interactions. Such principles would need to account for the strong mediation of the digital environment and the particular nature of user interactions: disembodied, asynchronous, and ambiguous intent about the target audience. I argue that, by contrast to face to face interactions, additional factors make (...) it more difficult for users to exercise moral sensitivity in an online environment. An ethics for social media user interactions is ultimately an ethics of human relations mediated by a particular environment; hence I look towards an enactive inspired ethics in formulating principles for human interactions online to enhance or at least do not hinder a user’s moral sensitivity. This enactive take on social media ethics supplements classical moral frameworks by asking us to focus on the relations established through the interactions and the environment created by those interactions. (shrink)

In this paper I investigate the neurophenomenology of freediving (NoF) and the Skilled Intentionality Framework (SIF), using these two components to mutually inform each other in order to better understand cognition in skilled action. First, this paper provides a novel neurophenomenological exposition of the practice of freediving. It combines quantitative neurophysiological data with qualitative phenomenological reports in order to understand the neural and bodily mechanisms that correlate with the phenomenology of freediving. The NoF data suggests that freediving induces a unique (...) neurophysiological state. This unique neurophysiological state forms the basis for a peculiar and exceptional experiential state, which is phenomenologically characterized by a heightened sense of presence, heightened perception, lack of reflective awareness, lack of anticipation in decision-making, and restricted emotional range. Second, this paper synthesizes the NoF data and the SIF conceptual framework of cognition in skilled action in order to investigate how the two can mutually inform one another. This synthesis provides 1) a unified and cohesive understanding of the NoF data; 2) elucidation and clarification of three key features generalizable to SIF’s _metastable zones_; 3) refinement of the role of _anticipation_ in SIF, with the focus shifting instead towards _task-specific constraint_ of action-readiness; and 4) an investigation of the breath, an understudied dynamical oscillator of brain, body, and behavior, which provides an empirical mechanism to support SIF’s theoretical assumption of the _dynamical self-organization_ required in skilled action. Looking more broadly, this neurophenomenological investigation of freediving elucidates a novel case study which can provide rich perspectives and fertile material for further scientific, phenomenological, theoretical, and philosophical investigations in ecological psychology, expertise, reflection, enactivism, and cognition more generally. (shrink)

Enactivism has influentially argued that the traditional intellectualist ‘act-content’ model of intentionality is insufficient both phenomenologically and naturalistically, and minds are built from world-involving bodily habits – thus, knowledge should be regarded as more of a skilled performance than an informational encoding. Radical enactivists have assumed that this insight must entail non-representationalism concerning at least basic minds. But what if it could be shown that representation is itself a form of skilled performance? I sketch the outline of such an account (...) from the perspective of Peirce’s pragmatist semiotics, which theorises signs as habits of associating specific cues with appropriate acts and schemas of ensuing experience. Within this framework, I argue, a naturalistic account of propositional structure can be constructed which transcends the symbolic – and in some instances even the linguistic – sphere, and offers new insights regarding the Information Processing Challenge, and the Hard Problem of Content. (shrink)

According to sensorimotor theory perceiving is a bodily skill involving exercise of an implicit know-how of the systematic ways that sensations change as a result of potential movements, that is, of sensorimotor contingencies. The theory has been most successfully applied to vision and touch, while perceptual modalities that rely less on overt exploration of the environment have not received as much attention. In addition, most research has focused on philosophically grounding the theory and on psychologically elucidating sensorimotor laws, but the (...) theory’s ramifications for neuroscience still remain underexamined. Here we sketch the beginnings of a research program that could address these two outstanding challenges in terms of auditory perception. We review the neuroscience literature on passive listening, which is defined as listening without overt bodily movement, and conclude that sensorimotor theory provides a unique perspective on the consistent finding of motor system activation. In contrast to competing theories, this activation is predicted to be involved not only in the perception of speech- and action-related sounds, but in auditory perception in general. More specifically, we propose that the auditory processing associated with supplementary motor areas forms part of the neural basis of the exercise of sensorimotor know-how: these areas’ recognized role in facilitating spontaneous motor responses to sound and supporting flexible engagement of sensorimotor processes to guide auditory experience and enable auditory imagery, can be understood in terms of two key characteristics of sensorimotor interaction, its “alerting capacity” and “corporality”, respectively. We also highlight that there is more to the inside of the body than the brain: there is an opportunity to develop sensorimotor theory into new directions in terms of the still poorly understood active processes of the peripheral auditory system. (shrink)

Many philosophers claim that the neurocomputational framework of predictive processing entails a globally inferentialist and representationalist view of cognition. Here, I contend that this is not correct. I argue that, given the theoretical commitments these philosophers endorse, no structure within predictive processing systems can be rightfully identified as a representational vehicle. To do so, I first examine some of the theoretical commitments these philosophers share, and show that these commitments provide a set of necessary conditions the satisfaction of which allows (...) us to identify representational vehicles. Having done so, I introduce a predictive processing system capable of active inference, in the form of a simple robotic “brain”. I examine it thoroughly, and show that, given the necessary conditions highlighted above, none of its components qualifies as a representational vehicle. I then consider and allay some worries my claim could raise. I consider whether the anti-representationalist verdict thus obtained could be generalized, and provide some reasons favoring a positive answer. I further consider whether my arguments here could be blocked by allowing the same representational vehicle to possess multiple contents, and whether my arguments entail some extreme form of revisionism, answering in the negative in both cases. A quick conclusion follows. (shrink)

The ‘scaling up’ objection says non-representational ecological-enactive accounts will be unable to explain ‘representation hungry’ cognition. Obsessive-compulsive disorder presents a paradigmatic instance of this objection, marked as it is by ‘representation hungry’ obsessive thoughts and compulsive behavior organized around them. In this paper I provide an ecological-enactive account of OCD, thereby demonstrating non-representational frameworks can ‘scale up’ to explain ‘representation hungry’ cognition. First, I outline a non-representational account of mind— a predictive processing operationalization of Sean Kelly’s theory of perception. This (...) account explains the ‘tensions’ and ‘pulls’ which guide and constrain our action-oriented and affect-laden perceptual ‘grip’ upon the world to be underwritten by an imperative to minimize prediction error. I then argue that OCD is best understood as ‘grip gone awry’— malformed predictive models signal inappropriately high error, and this results in extremely strong ‘tensions’ and ‘pulls’ which prescribe actions. Thus, I arrive at the idea that OCD is primarily constituted by ‘not just right’ feelings caused by high error signaling. Finally, I explain that this account provides a causal explanation of the non-representational existential feeling fundamental to OCD. Compulsions are considered manifestations of non-representational grip responsive to this feeling, whilst obsessions are explained to play a meta-role in the condition, being formulated by subjects in a bid to make their ‘not just right’ feeling intelligible. I explain that the meta-role obsessions play makes their representational status largely irrelevant to OCD, and so leave this an open question. Consequently, I provide a non-representational account of OCD, thereby demonstrating that ecological-enactive approaches can respond to the ‘scaling up’ objection. (shrink)

Cognitive scientists typically explain cognitive processes in groups from the study of the individual. Even researchers who recognize that our cognition is inherently situated and cannot be understood without placing it in a social context take the individual as the starting point for looking at group processes. It is reason for Robert Wilson (2004) to argue for 'group minds'. With this he creates room for the idea that certain group processes cannot solely be explained as the sum of the individual (...) cognitive participants. Marc Slors does not go that far in his article on group identification and cognition. Yet his writing takes important steps toward better understanding group cognition. Broadly speaking, I can agree with the reasoning of the article and agree with the conclusion. But there is an important point missing that must be elaborated if the article is not to fall prey to a fundamental critique. Slors' writing integrates an assumption that is under discussion in ecological psychology, namely that information perception for cultural affordances need not be specific and precise. I am skeptical of this assumption and explain why in what follows. As a helping hand, I also take a stab at reinforcing Slors' narrative. (shrink)

Affordances are standardly understood as perceived possibilities for interaction. What is afforded is in turn regarded as dependent on the properties of a body and its environment. Human bodies are nearly ubiquitously clothed, and clothing can change the capabilities of bodies. We argue that when clothing does this, it should be regarded as an affordance transforming technology. Clothing receives passing attention in remarks by Gibson, and some empirical work in ecological psychology uses worn items as experimental manipulations. We argue that (...) the effects of clothing should be a central topic of investigation. We further show how the notion of clothing as an affordance transforming technology allows ecological psychology to accommodate feminist insights about the restrictive or oppressive nature of some gendered clothing norms. We aim to show that if ecological psychology is to be a general framework for thinking about human perception and activity, then it should consider clothing, because of the differences it can make to what is afforded. It should do so critically because the ways that clothing transforms affordances are sometimes discriminating in that what people are expected to wear and what differences that makes aren’t independent of how they’re classified in systems of power and oppression. (shrink)

A short entry on social affordance. Social affordances are possibilities for social interaction or possibilities for action that are shaped by social practices and norms.

Enactivist approaches claim that cognition arises through a dynamic interaction between an acting organism and its environment. An ongoing challenge for these approaches is the problem of accounting for normativity while avoiding overly reductionist outcomes. This article examines a few proposed solutions, including agent-environment dynamics, participatory sense-making, radical enactivism, the skillful intentionality framework, and enactivist cultural psychology. It argues that good examples of enacted normativity are gestures of appreciation/disapproval performed in the aesthetic domain. Both Wittgenstein and Dewey explore this issue (...) and their ideas could be productively worked upon in an enactive account. (shrink)

This transdisciplinary doctoral thesis presents various theoretical, methodological and empirical approaches that together form an ecological approach to the study of social sciences. The key argument follows: to understand how sustainable behaviours and cultures may emerge, and how their development can be facilitated, we must further learn how behaviours emerge as a function of the person and the material and social environment. Furthermore, in this thesis the sustainability crises are framed as sustain-ability crises. We must better equip our cultures with (...) abilities to deal with the complexity and uncertainty of socio-ecological systems, and use these cultural skillsets to survive in and adapt to an increasingly unpredictable world. This thesis employs a plurality of ecological social sciences and related methodologies—such as ecological psychology, ecological rationality and agent-based modelling—to enlighten the question of how the collective adoption of sustainable behaviours can be leveraged, particularly by changing the affordances in the material environment. What is common to these ecological approaches is the appreciation of ‘processes’ over ‘products’: we must understand the various processes through which sustainable forms of behaviour or decision-making emerge to truly locate leverage points in social systems. Finally, this thesis deals extensively with uncertainty in complex systems. It proposes that we can look to local and traditional knowledge in learning how to deal adaptively with uncertainty. (shrink)

To reach sustainability transitions, we must learn to leverage social systems into tipping points, where societies exhibit positive-feedback loops in the adoption of sustainable behavioral and cultural traits. However, much less is known about the most efficient ways to reach such transitions or how self-reinforcing systemic transformations might be instigated through policy. We employ an agent-based model to study the emergence of social tipping points through various feedback loops that have been previously identified to constitute an ecological approach to human (...) behavior. Our model suggests that even a linear introduction of pro-environmental affordances (action opportunities) to a social system can have non-linear positive effects on the emergence of collective pro-environmental behavior patterns. We validate the model against data on the evolution of cycling and driving behaviors in Copenhagen. Our model gives further evidence and justification for policies that make pro-environmental behavior psychologically salient, easy, and the path of least resistance. (shrink)