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221.
Joshua Gert 《The Journal of Ethics》2012,16(1):15-34
Alan Goldman’s Reasons from Within is one of the most thorough recent defenses of what might be called ‘orthodox internalism’ about practical reasons. Goldman’s
main target is an opposing view that includes a commitment to the following two theses: (O) that there are such things as
objective values, and (E) that these values give rise to external reasons. One version of this view, which we can call ‘orthodox
externalism’, also includes a commitment to the thesis (I) that rational people will be motivated by any reason they have
of which they are aware. Goldman himself embraces (I), and deploys it frequently in his criticisms of orthodox externalism.
But there is logical space for an externalist view that includes a commitment to (O) and (E), but that denies (I). The resulting
“hyperexternalist” view holds that some reasons need not motivate us, even if we are rational. In this paper I argue that
Goldman’s criticisms of orthodox externalism leave hyperexternalism untouched, and that his specific criticisms of my own
version of hyperexternalism do not work. In light of Goldman’s criticisms of orthodox externalism and my own criticisms of
Goldman’s view, hyperexternalism emerges as the favored option. 相似文献
222.
Voorspoels W Storms G Vanpaemel W 《Quarterly journal of experimental psychology (2006)》2012,65(9):1721-1739
We examine the influence of contrast categories on the internal graded membership structure of everyday concepts using computational models proposed in the artificial category learning tradition. In particular, the generalized context model (Nosofsky, 1986), which assumes that only members of a given category contribute to the typicality of a category member, is contrasted to the similarity-dissimilarity generalized context model (SD-GCM; Stewart & Brown, 2005), which assumes that members of other categories are also influential in determining typicality. The models are compared in a hierarchical Bayesian framework in their account of the typicality gradient of five animal categories and six artefact categories. For each target category, we consider all possible relevant contrast categories. Three separate issue are examined: (a) whether contrast effects can be found, (b) which categories are responsible for these effects, and (c) whether more than one category influences the typicality. Results indicate that the internal category structure is codetermined by dissimilarity towards potential contrast categories. In most cases, only a single contrast category contributed to the typicality. The present findings suggest that contrast effects might be more widespread than has previously been assumed. Further, they stress the importance of characteristics particular of everyday concepts, which require careful consideration when applying computational models of representation of the artificial category learning tradition to everyday concepts. 相似文献
223.
Laura Kaltwasser Andrea Hildebrandt Guillermo Recio Oliver Wilhelm Werner Sommer 《Cognitive, affective & behavioral neuroscience》2014,14(2):861-878
Face cognition performance is related to individual differences in cognitive subprocesses, as reflected in the amplitudes and latencies of event-related brain potentials (ERPs; Herzmann, Kunina, Sommer, & Wilhelm, 2010). In order to replicate and extend these findings, 110 participants were tested on a comprehensive task battery measuring face cognition abilities and established cognitive abilities, followed by ERP recordings in a face-learning-and-recognition task. We replicated the links of the ERP components indicating the speed of structural face encoding (N170 latency) and access to structural representations in memory (early repetition effect [ERE]/N250r) with the accuracy and speed of face cognition and with established cognitive abilities. As a novel result, we differentiated between the accuracy of face perception and face memory on the behavioral and electrophysiological levels and report a relationship between basic visual processes (P100 amplitude) and face memory. Moreover, the brain–behavior relationships for the ERE/N250r held true, even though we eliminated pictorial and perceptual structural codes from the priming effects by using backward masking of the primes with novel unfamiliar faces. On a methodological level, we demonstrated the utility of the latent difference score modeling technique to parameterize ERP difference components (e.g., ERE/N250r) on a latent level and link them to face cognition abilities. 相似文献
224.
Peter G. Renden Annemarie Landman Suzanne F. Geerts Sander E.M. Jansen Gert S. Faber Geert J.P. Savelsbergh 《Anxiety, stress, and coping》2014,27(1):100-112
We investigated the effects of anxiety on the execution of police officers' arrest and self-defense skills. Police officers (n=13) performed three tasks in which they kicked, blocked, or restrained an opponent who attacked them with a rubber knife (low anxiety, LA) or a shock knife (high anxiety, HA) in a within-subject design. We analyzed performance (on a 5-point Likert scale), movement times, posture, and movement velocity and acceleration. Results revealed that performance was worse in the HA compared to the LA condition. Furthermore, analysis of full-body movement showed that under increased anxiety, police officers' performance contained characteristics of avoidance behavior, such as faster reactions (to reduce the time being exposed to the threat), leaning further backward (kick), and ducking down (block). In line with recent theoretical developments, it appears that under increased anxiety, police officers were less able to inhibit stimulus-driven processing (fear of getting hit) and enforce goal-directed processing (perform the skill as well as possible) leading to avoidance behavior and a decrease in performance. 相似文献
225.
226.
Talita Groenendijk Tanja Janssen Gert Rijlaarsdam Huub van den Bergh 《The British journal of educational psychology》2013,83(1):3-28
Background . Previous research has shown that observation can be effective for learning in various domains, for example, argumentative writing and mathematics. The question in this paper is whether observational learning can also be beneficial when learning to perform creative tasks in visual and verbal arts. Aims . We hypothesized that observation has a positive effect on performance, process, and motivation. We expected similarity in competence between the model and the observer to influence the effectiveness of observation. Sample . A total of 131 Dutch students (10th grade, 15 years old) participated. Method . Two experiments were carried out (one for visual and one for verbal arts). Participants were randomly assigned to one of three conditions; two observational learning conditions and a control condition (learning by practising). The observational learning conditions differed in instructional focus (on the weaker or the more competent model of a pair to be observed). Results . We found positive effects of observation on creative products, creative processes, and motivation in the visual domain. In the verbal domain, observation seemed to affect the creative process, but not the other variables. The model similarity hypothesis was not confirmed. Conclusions . Results suggest that observation may foster learning in creative domains, especially in the visual arts. 相似文献
227.
Joshua Gert 《Philosophical Studies》2013,162(2):183-200
This article attempts to do two things. The first is to make it plausible that any adequate dispositional view of color will have to associate colors with complex functions from a wide range of normal circumstances to a wide range of (simultaneously) incompatible color appearances, so that there will be no uniquely veridical appearance of any given color. The second is to show that once this move is made, dispositionalism is in a position to provide interesting answers to some of the most challenging objections that have been pressed against it. It explains why colors do not seem to “come on” when the lights come on, and why the right thing to say seems to be that the light causes the objects to reveal their colors. It explains why the content of visual experience need not be problematically circular. It eliminates the problem of intrapersonal variation in color appearance. And it even provides resources for dealing with the problem of interpersonal variation. It is true that in moving to the more complex view, the dispositionalist becomes subject to a new objection, which has been called “the problem of unity.” The paper offers a solution to this problem as well. 相似文献
228.
Gert Biesta 《Studies in Philosophy and Education》2013,32(5):449-461
This paper is an enquiry into the meaning of teaching. I argue that as a result of the influence of constructivist ideas about learning on education, teaching has become increasingly understood as the facilitation of learning rather than as a process where teachers have something to give to their students. The idea that teaching is immanent to learning goes back to the Socratic idea of teaching as a maieutic process, that is, as bringing out what is already there. Against the maieutic conception of teaching I argue for an understanding of teaching in terms of transcendence, where teaching brings something radically new to the student. I explore the meaning of the idea of transcendence through a discussion of Kierkegaard and Levinas, who both criticise the maieutic understanding of teaching and, instead, argue for a transcendent understanding of teaching—an understanding of teaching which they refer to as ‘revelation.’ Whereas Kierkegaard argues that revelation—which he understand as a process of ‘double truth giving’—lies beyond the power of the teacher, Levinas interprets revelation as the experience of ‘being taught.’ I use Levinas’s suggestion in order to explore the distinction between ‘learning from’ and ‘being taught by’ and argue that teaching has to be understood in the latter sense, that is, in terms of the experience of ‘being taught.’ To connect the idea of teaching to the experience of ‘being taught’ highlights that teaching can be understood as a process of ‘truth giving’ albeit that (1) this ‘gift’ lies beyond the powers of the teacher, and (2) the truth that is given, has to be understood in terms of what Kierkegaard calls ‘subjective truth’—which is not relativistic truth but existential truth, that is, truth that matters for one’s life. Understanding teaching in these terms also opens up new possibilities for understanding the role of authority in teaching. While my argument implies that teachers cannot simply and straightforwardly ‘produce’ the experience of ‘being taught’—so that what matters has to do with the conditions under which the gift of teaching can be received—their actions and activities nonetheless matter. In the final section of the paper I therefore argue that if we want to give teaching back to education, we need to resist the depiction of the teacher as a disposable and dispensable ‘resource’ that students can learn from or not, and need to articulate and enact a different story about the teacher, the student and the school. 相似文献
229.
This paper concerns the use of similarities based on geometric distance in models of categorization. Two problematic implications of such similarities are outlined. First, in a comparison between two stimuli, geometric distance implies that matching features are not taken into account. Second, missing features are assumed not to exist. Only nonmatching features enter into calculations of similarity. A new model is constructed that is based on the ALCOVE model (Kruschke, 1992), but it uses a feature-matching similarity measure (see, e.g., Tversky, 1977) rather than a geometric one. It is an on-line model in the sense that both dimensions and exemplars are constructed during the categorization process. The model accounts better than ALCOVE does for data with missing features (Experiments 1 and 2) and at least as well as ALCOVE for a data set without missing features (Nosofsky, Kruschke, & McKinley, 1992). This suggests that, at least for some stimulus materials, similarity in categorization is more akin to a feature-matching procedure than to geometric distance calculation. 相似文献
230.
We present a computational model that learns a coupling between motor parameters and their sensory consequences in vocal production during a babbling phase. Based on the coupling, preferred motor parameters and prototypically perceived sounds develop concurrently. Exposure to an ambient language modifies perception to coincide with the sounds from the language. The model develops motor mirror neurons that are active when an external sound is perceived. An extension to visual mirror neurons for oral gestures is suggested. 相似文献