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1.
《Ecological Psychology》2013,25(2):135-158
Michaels (2000) expressed concerns about the implications of the notion of 2 visual systems (Milner &; Goodale, 1995) for ecological psychology. This leads her to suggest a decoupling of perception and action, by which action is separate from perception. It is suggested that although Michaels noted, on the one hand, that Milner and Goodale's approach to perception is a constructivist one, she mistakenly adopts their view that separates vision for perception from vision for action. An alternative position is presented, based on a recent article (Norman, in press), in which the parallels between the 2 visual systems, dorsal and ventral, and the 2 theoretical approaches, ecological and constructivist, are elucidated. According to this dual-process approach to perception, both systems are perceptual systems. The ecological-dorsal system is the system that picks up information about the ambient environment allowing the organism to negotiate it. It is suggested that this type of perception always processes the relevant information for action and that there is no need to sever the perception-action coupling. Ecological psychology and the 2 visual systems are quite compatible, and there is no need for concern.  相似文献   

2.
In this article we present an ecological treatment of the control of stance by multi-segment organisms. We treat the organism as a black box, and the organism-environment interaction as a closed-loop system. We argue that different ways of controlling stance can have differing utility (affordances) for perception and action. We further argue that the affordances of a particular control strategy are in part determined by (a) the mechanical properties of the organism, (b) the mechanical properties of the surface on which stance takes place, and (c) the goals of behavior. Our conclusion is that the control of stance is based on, or constrained by, perception of the kinematic consequences, or affordances, of control actions. Finally, we argue that the relationship between affordances and constraints on control actions should be investigated using geometrical methods.  相似文献   

3.
《Ecological Psychology》2013,25(2):99-119
The interaction between informational support or task constraints and functional motor performance was explored using kinematic profiles of the arms and hands of 40 participants with and without multiple sclerosis (MS). Three functional tasks were performed under three conditions: impoverished (i.e., participants mimed the tasks), partial (i.e., participants mimed the tasks with a limited array of the objects normally used), and natural (i.e., participants performed the actual tasks). Results indicated that each of the three conditions elicited unique kinematic profiles. Movement time, maximum displacement, and velocity variability were significantly different among each of the three conditions. An ecological interpretation suggested that functional performance emerged from the interaction of the task demands of each condition and of the action capabilities of the participants. Participants with and without MS responded to the three conditions in similar ways, except that those with MS performed the tasks more slowly. We speculated that the slower performance was a function of the reduced and inconsistent action capabilities of the participants with MS.  相似文献   

4.
《Ecological Psychology》2013,25(2):129-158
We asked what rod properties affected children's reaching range. Children, 2 to 4 years old, held a rod (length 10-60 cm) with the tip in the air, walked toward a toy on a table, chose a place to stop, and displaced the toy with the rod's tip. In 2 experiments rod length, mass, and mass distribution were manipulated to determine whether and how geometric and kinetic properties affected chosen distance and posture. Chosen distance depended only on the length of the rod. Postures were affected by length and mass properties of the rod. Not all adaptations in posture were prospectively reflected in the distance. Although we found variations over age, we did not find clear developmental trends. The results are discussed in broader perspectives of development of affordances and tool use.  相似文献   

5.
Abstract

According to John McDowell, representational perceptual content is conceptual through and through. This paper criticizes this view by claiming that there is a certain kind of representational and non‐conceptual perceptual content that is sensitive to bodily skills. After a brief introduction to McDowell’s position, Merleau‐Ponty’s notion of body schema and Gibson’s notion of affordance are presented. It is argued that affordances are constitutive of representational perceptual content, and that at least some affordances, the so‐called ‘conditional affordances’, are essentially related to the body schema. This means that the perceptual content depends upon the nature of the body schema. Since the body schema does not pertain to the domain that our conceptual faculties operate upon, it is argued that this kind of perceptual content cannot be conceptual. At least some of that content is representational, yet it cannot feature as non‐demonstrative conceptual content. It is argued that if it features as demonstrative conceptual content, it has to be captured by private concepts. Since McDowell’s theory does not allow for the existence of a private language, it is concluded that at least some representational perceptual content is non‐conceptual.  相似文献   

6.
《Ecological Psychology》2013,25(1):73-77
Stoffregen (2003) has proposed a formal definition of affordances as emergent or relational properties of animal-environment systems. This definition contrasts with Turvey's (1992) formal definition of affordances as properties of the environment. In this commentary, my purpose is not to take sides on this issue but instead to bring to light what I believe to be a crucial flaw in Stoffregen's definition. Specifically, I show that Stoffregen's definition places no constraint on which relational or emergent properties legitimately deserve to be counted as affordances, thus allowing any relational property that can be predicated of an animal-environment system to be considered as an affordance. As such, Stoffregen's definition lacks any substantive linkage to the "opportunity for action" notion that has accounted for the scientific utility of the concept to date, a linkage I suggest should be preserved in any definition of affordances.  相似文献   

7.
Researchers (Gilden &; Proffitt, 1989; Runeson &; Vedeler, 1993; Todd &; Warren, 1982) have tested Runeson's (1977) claim that the relation between a collision . . event's dynamics and kinematics might support perception of the relative mass of colliding objects. Results have been inconsistent; however, these studies employed computer-generated collisions as stimuli. The present research assessed observer's ability to report relative mass in the context of physical objects involved in physical collisions. The results indicate greater sensitivity to relative mass than had been found with animations-based studies. Implications of these data for the kinematic specification of dynamics (KSD) principle of dynamics perception (Runeson &; Frykholm, 1983) and a cue-heuristics theory of dynamics perception (Gilden &; Proffitt, 1989) are discussed.  相似文献   

8.
Borghi  Anna M. 《Synthese》2021,199(5-6):12485-12515

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 (and micro-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.

  相似文献   

9.
This paper includes an effort to extend the notion of affordance from a philosophical point of view the importance of ecological approach for social psychology, ethics, and linguistics. Affordances are not always merely physical but also interpersonal and social. I will conceptualize affordance in general and social affordance in particular, and will elucidate the relation between intentional action and affordances, and that between affordances and free will. I will also focus on the relation between social institution and affordance. An extended theory of affordances can provide a way to analyze in concrete ways how social institution works as an implicit background of interpersonal interactions. Ecological approach considers social institution as the producer and maintainer of affordances. Social institutions construct the niches for human beings. Finally, I will argue the possibility of the ecological linguistics. Language is a social institution. The system of signs is the way to articulate and differentiate interpersonal affordances. Language acquires its meaning, i.e. communicative power in the interpersonal interactions, and interpersonal interactions, in turn, develop and are elaborated through the usage of signs. Communication is seen as never aimed to transmit inner ideas to others, but to guide and adjust the behaviors of others thorough articulating the affordance of responsible-ness.  相似文献   

10.
《Ecological Psychology》2013,25(2):181-193
The principle of auditory enhancement is a valuable extension of the theory of adaptive dispersion. However, neither the principle nor the theory has any bearing on what we perceive in speech. All perceptual objects, including those of speech, are abstract, amodal structures made available to cognition through one or more sensory modalities. A focus on the modalities or media of information transfer in speech perception diverts attention from two central and related aspects of speech function: perceptuomotor functional equivalence and imitation. Arguments and evidence from studies of lipreading, short-term memory, and infant behavior are put forward to support the postulation of an output unit, the phonetic gesture, at a level in the communication chain corresponding on the input side to the acoustic cue. The object of speech perception is then taken to be the amodal phonetic segment, a cohesive set of direct mappings between sound and gesture.  相似文献   

11.
We argue that the experimental conditions in the Durgin et al. (2009) study were so different from those in Bhalla and Proffitt (1999) that the results of the former study cannot be generalized to the latter. The participants in the Durgin et al. study viewed a 2-m-long ramp; those in Bhalla and Proffitt viewed expansive hills. When drawing generalizations from one study to another, equating experimental conditions is always important; moreover, from an embodied perspective on perception, equating the opportunities for action also matters.  相似文献   

12.
《Ecological Psychology》2013,25(3):140-180
The concept of affordance is a central component of the ecological psychology of J. J. Gibson (1966, 1977, 1979/1986). Affordances are properties of the environment taken relative to an observer. Ecological theorists have developed formal models for the analysis of affordances. Models proposed by Shaw and Turvey (1981), Turvey (1992), and Greeno (1994) are described and evaluated, and another approach, using Turing's (1936-1937/1965) theory of computation, is outlined. Affordances are characterized as the configurations of Turing machines. It is shown that Turing's work provides a natural vehicle for exploring Gibson's ideas.  相似文献   

13.
Vetter  Barbara 《Topoi》2020,39(5):1177-1191
Topoi - According to ecological psychology, animals perceive not just the qualities of things in their environment, but their affordances: in James Gibson’s words, ’what things furnish,...  相似文献   

14.
15.
《Ecological Psychology》2013,25(2):77-98
Recent extensions of the affordance concept to fundamental problems in the study of social knowing and interaction were the focus of one of the symposia at the Fifth International Conference on Event Perception and Action, at Miami University, Oxford, OH in July 1989. This article traces the history of ecological social psychology and reviews recent attempts to extend the application of the concept of affordance to the topics of social knowing and social interaction. Themes arising within three domains of contemporary ecological research are examined: (a) social perception research has stressed the direct perception of what other people afford the self and the perception of what other people are afforded in their transactions with the shared environment of surfaces, objects, places, and other persons; (b) in the study of social interaction, the emphasis recently has been on the processes of the perceiving and the assembling of social coordination, and also on the functions of social interaction in the acquisition of knowledge and behavioral competence; and (c) cultural practices, such as those involved in caregiver-infant interactions, appear to play a central role in organizing the shared focus of attention and in revealing and creating affordances for action and interaction. Some of the work described in this article appears in the current and subsequent issues of Ecological Psychology.  相似文献   

16.
《Ecological Psychology》2013,25(1):93-107
In replying to the commentaries, I focus on issues relating to theory, empirical practice (i.e., to how research on events and affordances has been conducted), and empirical research that I think is needed. I reiterate my argument that because they differ qualitatively, affordances might be perceived without prior or concurrent perception of the underlying events. I suggest that research on event perception might, in principle, inform research on the perception of affordances, but existing research has made no explicit attempt to do this. I conclude by stressing the need for new research and for exponents of event perception to identify a theoretical motivation, within ecological theory, for why events should be perceived.  相似文献   

17.
《Ecological Psychology》2013,25(2):149-180
Why is it that affordances have received attention within psychology only in recent decades if they are supposedly what individuals perceive most fundamentally? This paradox can be explained, in part, by the fact that psychologists have usually considered the character of perceiving from a detached stance, and then reified the results of this analysis-an error that William James called the psychologist's fallacy-rather than attending to the immediate flow of perception-action. By the same token, if ecological psychologists were to take stimulus information as what is perceived, rather than as part of a conceptual framework offered to explain how we perceive, they would be committing a similar reification error. Ecological optics as a conceptual framework is always open to revision, even while the reality of affordances is assumed. Bearing in mind this distinction between what is perceived and how it is perceived, investigators need to return regularly to immediate experience, both as a means of verifying that our concepts connect back to our experience of the world and as a way of uncovering new qualities of perceptual experience for investigation. From this perspective, several exemplars of phenomenologically driven perceptual research are examined. Furthermore, the multidimensionality of affordances is considered, with an emphasis on their place in the flow of immediate experience, development, and sociocultural processes.  相似文献   

18.
《Ecological Psychology》2013,25(3):173-187
Actions must be controlled prospectively. This requires that the behavioral possibilities of surface layouts and events be perceived. In this article, the ontolog- ical basis for an understanding of prospective control in realist terms is outlined. The foundational idea is that of affordances and the promoted ontology is materialist and dynamicist. It is argued that research in the ecological approach to prospective control is ultimately the search for objective laws. Because lawfulness is equated with real possibility, this amounts to the study of the affordances (the real possibilities) underlying prospective control and the circumstances that actualize them. The ontological assumptions and hypotheses bearing on this latter proposal are articulated. It is suggested that critical evaluation of the identified ontological themes may benefit the experimental and theoretical study of perception in the service of activity.  相似文献   

19.
In 2 experiments, differences in visual perception of climbing routes (route finding) between 7 expert climbers, 4 novices, and 9 inexperienced participants were studied. In both experiments, participants reproduced on a scale model the locations and orientations of 23 holds of a climbing wall. The results showed that the expert climbers recalled more information and recalled clusters of information and that they focused on the functional aspects of a climbing wall, whereas they neglected its structural features. Inexperienced participants did not recall such clustered information, and they reported almost exclusively the structural features of the holds. The perception of nested affordances and the expert climbers' neglect of details are discussed.  相似文献   

20.
《Ecological Psychology》2013,25(2):167-172
Michaels's (2000) reassessment of the relation between action and perception is endorsed. In alignment with Milner and Goodale (1995), she proposed a separation between action (i.e., control of movement) and perception (i.e., the explicit knowledge of environmental properties, including animal-referential ones), the separation being based on the reliance on different optical variables. However, how should the concept of affordances be incorporated into this scheme? We present data showing that affordances, both when perceived and acted on, are not susceptible to optical illusions. Because action and perception are distinguished on the basis of information used, but are also proposed to interact, it is hypothesized that, dependent on the task goal, "information for action" may be used in perception, and "information for perception" may be used in action. Participants may become more attuned to information for action when perception serves to acquire explicit knowledge about what the environment affords for action.  相似文献   

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