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981.
The biological foundations of cognitive science 总被引:1,自引:0,他引:1
Mark H. Bickhard 《New Ideas in Psychology》2009,27(1):75-84
Cognitive Science originated in reactions against behaviorism that were motivated in significant part by the example of the computer. The computer raised the exciting possibility that mind could be understood almost entirely independently of brain: if the operations of the mind are akin to the execution of a program, then almost all the relevant aspects of mind would be captured by that program, independently of whatever was running it, be it transistors or neurons. This presumed independence of cognitive science from biology has waned considerably in recent decades, but in this paper, I argue that there is at least one crucial aspect of biology that has yet to be appreciated for its relevance to mental and other normative processes—the thermodynamics of living systems. In particular, I argue that the emergence of normativity in general—and normative function and representation in particular—depends on special systems that are far from thermodynamic equilibrium; these form the interface between the factual world of atoms and molecules and the normative world of mind. The nature of that emergence, in turn, imposes strong constraints on how the central nervous system functions, and, therefore, on how cognition is realized. 相似文献
982.
Michael L. DeKay Dalia Patiño-Echeverri Paul S. Fischbeck 《Organizational behavior and human decision processes》2009
Substantial evidence indicates that information is distorted during decision making, but very few studies have assessed the distortion of probability and outcome information in risky decisions. In two studies involving six binary decisions (e.g., banning blood donations from people who have visited England, because of “mad cow disease”), student and nonstudent participants distorted their evaluations of probability and outcome information in the direction of their preferred decision alternative and used these biased evaluations to update their preferences. Participants also evaluated the utilities of possible outcomes more positively when the outcomes could follow only from the preferred alternative and more negatively when they could follow only from the competing alternative. Such circular reasoning is antithetical to the normative consequentialist principles underlying decision analysis. Presenting numerical information as precise values or as ranges of values did not significantly affect information distortion, apparently because the manipulation did not affect perceived ambiguity as intended. 相似文献
983.
D. Lance Ferris Douglas J. Brown Daniel Heller 《Organizational behavior and human decision processes》2009,108(2):279-286
Drawing upon belongingness theory, we tested organization-based self-esteem (OBSE) as a mediator of the relation between organizational supports and organizational deviance. Data from 237 employees were collected at three points in time over one year. Using structural equation modeling, we found that OBSE fully mediated the relation between organizational supports and organizational deviance. Controlling for preexisting predictors of deviance, including personality traits (agreeableness, neuroticism and conscientiousness) and role stressors (role conflict, ambiguity, and overload), did not eliminate the relation between OBSE and organizational deviance. The implications for the OBSE and deviance literatures are discussed. 相似文献
984.
类别不确定下的特征推理是基于类别还是基于特征联结 总被引:1,自引:0,他引:1
共有3个实验探讨归类不确定情况下的特征推理是基于类别进行还是基于特征联结进行。实验1在中文条件下重复了Verde等人2005的实验,得出了与之相符的结果,这个结果用基于类别的理性模型的设想或者是用基于特征联结的设想都可以解释。实验2考察被试在靶类别的类别特征频次并且特征结合出现频次高低不同的条件下特征推理的情况,实验2的结果表明,高集中与低集中两种条件下特征推理没有显著差异,不符合特征推理是基于类别进行的设想,而与特征推理是基于特征联结进行的设想吻合。实验3进一步考察被试在特征结合出现的总频次并且靶类别中特征结合出现的总频次高低不同的条件下特征推理的情况,结果表明,在高结合条件下进行特征推理要优于在低结合条件,支持了在归类不确定情况下的特征推理是基于特征联结进行的设想。据此可以认为,人们的特征推理是基于特征之间联结的频次进行,而不是基于类别进行 相似文献
985.
986.
规范化的胃癌根治术是我国胃癌治疗的发展方向,本文回顾性分析胃癌根治术中常规放置空肠营养管和术后早期肠内营养在胃癌规范化治疗中的作用。结果表明空肠营养管置入和对照组术后并发症率无显著性差异(P=0.501),早期联合肠内营养可有效缩短住院时间(P=0.0115)。结合博弈论的观点分析,胃癌根治术中放置空肠营养管在并发症预防和治疗中有重要作用,可能避免不必要的二次开腹手术,因此是一种对于医患双方都最为有利的策略选择。 相似文献
987.
Stefan Kaufmann 《Journal of Philosophical Logic》2009,38(1):1-53
The fact that the standard probabilistic calculus does not define probabilities for sentences with embedded conditionals is
a fundamental problem for the probabilistic theory of conditionals. Several authors have explored ways to assign probabilities
to such sentences, but those proposals have come under criticism for making counterintuitive predictions. This paper examines
the source of the problematic predictions and proposes an amendment which corrects them in a principled way. The account brings
intuitions about counterfactual conditionals to bear on the interpretation of indicatives and relies on the notion of causal
(in)dependence. 相似文献
988.
David Birch 《Journal of mathematical psychology》2009,53(2):106-118
Motivational psychology and ethology conceive of behavior as a continuous stream of activities, a conceptualization that is taken up formally in the present paper. Modeling the stream of behavior, unlike modeling an individual activity selected out of the stream, requires processes of data generation that govern the repeated overt appearances of activities through time. To this end the motivation theory of the dynamics of action, with its self-contained data generating process, is employed as a mathematical framework. The resulting theory, modeled as a continuous succession of mutually exclusive and exhaustive activities driven by the countdown of activation times, yields expectations for the relative frequencies of transitions and the distributions of transition times in a stream segment. Results supporting the theory were obtained in a series of critical tests using a unique data set provided by the artist Morgan O’Hara who has made extensive recordings of her stream of behavior. 相似文献
989.
We consider preferences as fulfillment of conditional desires, which can be either positive or negative, or both. We go beyond the standard multi-attributive additive utility theory in the sense that we separate the data given by the preference relation over an unstructured space from the property structure representing (conditional) attributes or desires. The model accounts for the psychologically motivated and empirically confirmed asymmetry between desire fulfillment and disappointment (loss aversion). The only restriction on the set of desires is, loosely speaking, a kind of mutual logical independence. We formulate a representation theorem characterising when a weak order (i.e. complete and transitive) preference is compatible with the logical structure of desires and has an additive representation over it. It is unique in the sense that each utility function representing the preferences has at most one such additive decomposition. 相似文献
990.
Using longitudinal data (N = 220), we examined the contribution of perceived organizational support and four mindsets of organizational commitment (affective, normative, perceived sacrifice associated with leaving and perceived lack of alternatives) to employee psychological well-being. In order to assess the contribution of support and commitment independently from workplace stressors, we controlled for the effects of role ambiguity, role conflict and role overload. Analyses showed affective organizational commitment to mediate a positive relationship between perceived organizational support and well-being. In addition, perceived organizational support negatively related to perceived lack of employment alternatives which, in turn, was negatively related to well-being. Normative commitment and perceived sacrifice associated with leaving were unrelated to well-being. The implications of these findings are discussed under the lenses of social exchange and conservation of resources theories. 相似文献