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181.
A small Monte Carlo study examined the performance of a form of taxometric analysis (the MAXCOV procedure) with fuzzy data sets. These combine taxonic (categorical) and nontaxonic (continuous) features, containing a subset of casts with intermediate degrees of category membership. Fuzzy data sets tended to yield taxonic findings on plot inspection and two popular consistency tests, even when the degree of fuzziness, i.e., the proportion of intermediate cases, was large. These results suggest that fuzzy categories represent a source of pseudotaxonic inferences, if on is understood in the usual binary, "either-or" fashion. This in turn implies that dichotomous causes cannot be confidently inferred when taxometric analyses yield apparently taxonic findings. 相似文献
182.
Stewart N Brown GD Chater N 《Journal of experimental psychology. Learning, memory, and cognition》2002,28(1):3-11
Categorization research typically assumes that the cognitive system has access to a (more or less noisy) representation of the absolute magnitudes of the properties of stimuli and that this information is used in reaching a categorization decision. However, research on identification of simple perceptual stimuli suggests that people have very poor representations of absolute magnitude information and that judgments about absolute magnitude are strongly influenced by preceding material. The experiments presented here investigate such sequence effects in categorization tasks. Strong sequence effects were found. Classification of a borderline stimulus was more accurate when preceded by a distant member of the opposite category than by a distant member of the same category. It is argued that this category contrast effect cannot be accounted for by extant exemplar or decision-bound models of categorization. The effect suggests the use of relative magnitude information in categorization. A memory and contrast model illustrates how relative magnitude information may be used in categorization. 相似文献
183.
Psychology and the End of History: A Critique and a Proposal for the Psychology of Social Categorization 总被引:1,自引:0,他引:1
This paper suggests that self-categories provide the basis for political action, that those who wish to organize political activity do so through the ways in which they construct self-categories, and that political domination may be achieved through reifying social categories and therefore denying alternative ways of social being. Hence, the way in which social psychology approaches the matter of self-categorization provides a touchstone for its politics. To the extent that we too take categories for granted, we are in danger of supporting conservative and undemocratic politics. The only way to eschew tendencies toward reification within social psychology is to add a historical dimension to our own analysis of self-categorical processes. 相似文献
184.
The history of therapist self disclosure is traced from the early struggles of Ferenczi and Burrow to its valued, yet still ambivalent, contemporary status. The symmetry of self disclosure by therapist and group members is differentiated from the parity of their different roles and responsibilities. Using a case example, the process is discussed through which a therapist's self disclosure fosters task-appropriate satisfaction of selfobject needs as it also helps group members articulate and loosen archaic selfobject binds. The therapy group is described as a transitional space within which a therapist's disclosure offers members an intersubjective bridge to the therapist as well as a model for members' own active participation in the group's work. 相似文献
185.
Nick Bostrom 《Synthese》2007,157(1):59-78
The Sleeping Beauty problem is test stone for theories about self- locating belief, i.e. theories about how we should reason
when data or theories contain indexical information. Opinion on this problem is split between two camps, those who defend
the “1/2 view” and those who advocate the “1/3 view”. I argue that both these positions are mistaken. Instead, I propose a
new “hybrid” model, which avoids the faults of the standard views while retaining their attractive properties. This model
appears to violate Bayesian conditionalization, but I argue that this is not the case. By paying close attention to the details of
conditionalization in contexts where indexical information is relevant, we discover that the hybrid model is in fact consistent
with Bayesian kinematics. If the proposed model is correct, there are important lessons for the study of self-location, observation
selection theory, and anthropic reasoning. 相似文献
186.
187.
Previous experiments have shown that objects are recognized more readily in a semantically consistent visual context. However,
the benefit from context could be explained by response bias, and may not reflect the influence of context on the perceptual
processes of recognition. We conducted a six-alternative forced-choice experiment to measure semantic and perceptual errors.
A target object appeared briefly, surrounded by four context objects. The target was more accurately identified when the context
consisted of objects semantically related to the target. The large number of semantic errors, which increased when the context
presentation preceded the target, showed that response bias did account for a proportion of the context effect. Nevertheless,
significant facilitation was still present after a bias correction. Recognition of an object can be affected by context not
only when it is embedded in a coherent naturalistic scene, but also when it is simply near other related objects. Materials
associated with this article may be accessed at www.psychonomic.org/archive. 相似文献
188.
Gold's [1967. Language identification in the limit. Information and Control, 16, 447-474] celebrated work on learning in the limit has been taken, by many cognitive scientists, to have powerful negative implications for the learnability of language from positive data (i.e., from mere exposure to linguistic input). This provides one, of several, lines of argument that language acquisition must draw on other sources of information, including innate constraints on learning. We consider an ‘ideal learner’ that applies a Simplicity Principle to the problem of language acquisition. The Simplicity Principle chooses the hypothesis that provides the briefest representation of the available data—here, the data are the linguistic input to the child. The Simplicity Principle allows learning from positive evidence alone, given quite weak assumptions, in apparent contrast to results on language learnability in the limit (e.g., Gold, 1967). These results provide a framework for reconsidering the learnability of various aspects of natural language from positive evidence, which has been at the center of theoretical debate in research on language acquisition and linguistics. 相似文献
189.
190.
Tricia Bertram Gallant Lelli Van Den Einde Scott Ouellette Sam Lee 《Science and engineering ethics》2014,20(1):277-298
Cheating in the undergraduate classroom is not a new problem, and it is recognized as one that is endemic to the education system. This paper examines the highly normative behavior of using unauthorized assistance (e.g., a solutions manual or a friend) on an individual assignment within the context of an upper division undergraduate course in engineering mechanics. The findings indicate that there are varying levels of accepting responsibility among the students (from denial to tempered to full) and that acceptance of responsibility can lead to identification of learning and necessary behavioral changes. The findings have implications for institutions and engineering faculty, in particular the need for consistent academic integrity education and the teaching of professional integrity and ethics. 相似文献