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The characteristics of mediational mechanisms based upon magnitude of reinforcement were investigated using rats. In two experiments, two-choice discriminations were trained in which selections of one lever in one external stimulus and a second lever in another external stimulus were reinforced with food. In the first experiment, it was found that the discrimination was acquired more rapidly when one choice was reinforced with a large number of food pellets and the other with a smaller number of pellets than when other configurations of reinforcement magnitude were provided. In the second experiment, reversal of a two-choice discrimination was found to be facilitated by prior exposure of the animals to the reversed relationships between the external stimuli and magnitudes of reinforcement. These results were consistent with predictions from a stimulus or associative view of anticipatory processes based upon magnitude of reinforcement.  相似文献   

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A finite family of binary relations on a finite set, termed here a relational system, generates a finite semigroup under the operation of relational composition. The relationship between simplifications of the semigroup of a relational system in the form of homomorphic images, and simplifications of the relational system itself is examined. First of all, the list of relational conditions establishing a relationship between a homomorphic image of the semigroup of a relational system and a simplified, or derived, version of that relational system, is reviewed and extended. Then a definition of empirical relationship is introduced (the Correspondence Definition) and it is shown how, in conjunction with a factorization procedure for finite semigroups (P. E. Pattison & W. K. Bartlett, Journal of Mathematical Psychology, 1982, in press), it leads to a systematic and efficient analysis for a relational system. Applications of the procedure to an empirical blockmodel and to a class of simple relational systems are presented.  相似文献   

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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   

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管理与伦理结合涉及管理目的、管理者、管理对象、管理职能、管理方法等各个方面,是一个重大的管理问题。它既不是操作层次的问题,也不是管理原则的问题,而恰恰是观念层次的问题,是经营、管理与伦理有没有联系、要不要结合的观念问题。这一观念的变革将导致管理原则、管理程序、管理方法、管理技巧的一系列变革。与传统管理相比,它引发的变革无疑是根本性的。  相似文献   

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ABSTRACT

Grounded in the ecological approach, research has charted several adaptive functions of autobiographical remembering. Each represents a rather different psychosocial domain (i.e., self, social, directive). The goal of this research was to determine the contributions of each of a set of variables, controlling for all others, in predicting use of autobiographical memory to serve each specific function. In two studies, participants (N?=?100; N?=?195) rated frequency of functional use of specific event memories and completed a brief battery of memory-related measures. Most Study One results were replicated in Study Two. Self-relevance of memories was related to their functional use regardless of domain. Each function was also, however, predicted by a unique set of variables consistent with its use in a given psychosocial domain. Findings emphasise how a combination of factors come into play to allow humans to use autobiographical memory to serve various different functions in navigating daily life.  相似文献   

9.
Killeen and Hall (2001) showed that a common factor called strength underlies the key dependent variables of response probability, latency, and rate, and that overall response rate is a good predictor of strength. In a search for the mechanisms that underlie those correlations, this article shows that (a) the probability of responding on a trial is a two-state Markov process; (b) latency and rate of responding can be described in terms of the probability and period of stochastic machines called clocked Bernoulli modules, and (c) one such machine, the refractory Poisson process, provides a functional relation between the probability of observing a response during any epoch and the rate of responding. This relation is one of proportionality at low rates and curvilinearity at higher rates.  相似文献   

10.
叶浩生 《心理学报》2014,46(7):1032-1042
“具身”是当代心理学和认知科学领域的热门话题, 其基本涵义是指认知对身体的依赖性。经典认知科学主张“非具身”, 认为认知是一种信息的表征与加工, 从本质上讲与承载它的身体无关。“弱具身”强调了认知对身体的依赖性, 但是却保留了认知的计算和表征功能。“强具身”则极力主张认知是被身体作用于世界的活动塑造出来的, 身体的特殊细节造就了认知的特殊性。在怎样理解“具身”方面, 存在着不同的解释。从本文作者的观点来看, 具身的性质和特征表现在4个方面:(1)身体参与了认知, 影响了思维、判断、态度和情绪等心智过程。(2)我们对于客观世界的知觉依赖于身体作用于世界的活动, 身体的活动影响着关于客观世界表象的形成。(3)意义源于身体, 抽象的意义有着身体感觉—运动系统的基础。(4)身体的不同倾向于造就不同的思维和认识方式。有关具身的研究将从理论和实践两个层面对心理学产生冲击。  相似文献   

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Being a child of an alcoholic (COA) is neither a diagnosis nor a psychosocial death sentence. Neither alcoholic families nor COAs are monolithic. A variety of factors converge in developmental trajectories resulting in diverse individual outcomes. Supportive relationships with non-substance using parents and siblings and appropriate levels of parentification all may enable a significant proportion of COAs to enjoy high self-esteem, lack of problematic substance use, and good adaptive capability. Therapists and clients should refrain from looking at COAs through a deficit framework and instead should look for evidence of relational resilience in alcoholic families of origin. Such strengths-based assessments will increase therapeutic leverage with COAs seeking treatment for a range of presenting problems.  相似文献   

12.
Judgements of learning (JOL) of paired associates can be made immediately after learning or after a delay, while viewing the first word (cue) only or both words (cue–target) in a pair. Delayed cue-only judgements are more related to subsequent memory performance than delayed cue–target, immediate cue-only, or immediate cue–target judgements. In two experiments we tested students' knowledge of this delayed JOL effect and whether their knowledge increases as a function of task experience (Experiment 2). The majority of the participants did not choose the more effective judgement strategy and they did not systematically alter their behaviour as a function of task experience. Instead, a subset of the participants selected judgement strategies on the basis of a learning goal, that is, a strategy that let them restudy both words in a pair. In sum, most students appear to be unaware of the powerful influence of delayed cue-only JOLs on monitoring accuracy.  相似文献   

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Spirituality is a phenomenon which continues to attract much interest in the Western culture. Throughout the years, it has changed in form and developed in understanding. It has become unprecedentedly broad and embraced by many people, even those who do not consider themselves to be religious. Indeed, spirituality is a subject of debate within academic and non-academic circles regarding its shape, place, function, and definition. This debate and the academic investigation reveals that as a field of study it is undergoing intense and vigorous development. However, there are a number of conceptual deficiencies which need attention, namely; identity and method. The aim of this study is to develop the concept of spirituality according to the current European population. The study applies Structural Equation Modelling (SEM) and finds current spirituality functioning as a three-dimensional model composed of transcendence, immanence, and purpose. This concept is predicted by 13 independent variables. The findings conclude that current spirituality is a person’s individual existential dimension, being subject to change through the influence of various psychological, religious and social factors. The findings of the research describe its practical implication within formational social fields such as education, counselling, and psychotherapy.  相似文献   

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本文认为华生的心理学激情有余而严谨不足;既是革命的旗帜又成了批判的靶子;在哲学问题上存在着许多误区;是一个充满魅力而影响甚巨的体系。  相似文献   

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May's model of pairwise preference determination is used to assess the expected likelihood that a subject's pairwise preference comparisons on three alternatives will be transitive. A closed form representation for this expected likelihood is obtained for each situation considered. When the subject is assumed to act precisely according to rankings on attributes with May's model, the computed expected likelihoods the relatively large. When the subject becomes a probabilistic chooser, as defined in a specific manner, expected likelihoods of transitivity decrease significantly from corresponding values with May's model. For a probabilistic Chooser, there is a significant likelihood that the subject might yield transitive pairwise preferences substantially different than the results suggested by May's model.This research was supported by a grant from the General University Research Program and through a fellowship from the Center for Advanced Study, both of the University of Delaware. Very helpful input from John H. Antil, Meryl P. Gardner, and James M. Munch is also acknowledged.  相似文献   

16.
朱耀平 《现代哲学》2004,(4):97-102,120
与康德认为只有表现在意识行为中的“形式范畴”才具有先天性不同,胡塞尔认为不论是形式范畴还是质料范畴都具有先天性;先天与后天的区别,表示的正是一般对象与个体对象在本体论上的区别。这意味着在胡塞尔那里,“先天’’不再是“行为的名称”.而是“存在的名称”。海德格尔在充分肯定胡塞尔的这个思想的理论价值的同时,又对它做了“实质性的修正”,把先天与后天的区别最终归结为存在与存在者的“本体论区别”。  相似文献   

17.
The purpose of the present study was to examine initial interpersonal attraction as a function of locus of control orientation. Subjects, previously tested for internality and externality, listened to a tape of an alleged stranger of the same age and sex as the subject. In reality the tapes were prepared to be either primarily internal or external in emphasis. Subjects were then asked to make some judgments about the supposed stranger. Among these judgments was the degree of attraction felt toward the individual on the tape. It was hypothesized that similarity of locus of control orientation between a subject and a stranger would lead to greater initial attraction than would a complementary locus of control orientation. Contrary to prediction, the results showed that both internal and external subjects were significantly more attracted to an internal stranger than to an external stranger. These results were discussed within an interpersonal attraction framework which suggested the need for a two-factor theory as the basis for interpersonal attraction.  相似文献   

18.
Pigeons' not pecking or pecking constituted choice between a delayed, large reinforcer and an immediate, small reinforcer (self-control) and at other times between a delayed reinforcer and no reinforcer (omission). Both a tone and a keylight were tested as choice signals, and the delayed reinforcer was either response independent or response dependent. Pigeons pecked during the choice signals on over 95% of the trials in the self-control procedure, and pecked during the choice signals on over 75% of the trials in the omission procedure. Consistent pecking was observed with either the tone or the keylight as a choice signal, with the exception that a tone paired with a response-independent delayed reinforcer did not maintain pecking in the omission procedure. Pigeons pecked during more choice signals when delayed reinforcers were response dependent than when the delayed reinforcers were response independent. These results indicate that Pavlovian conditioning influences self-control experiments, especially in single-key procedures.  相似文献   

19.
A procedure is described for minimizing a class of matrix trace functions. The procedure is a refinement of an earlier procedure for minimizing the class of matrix trace functions using majorization. It contains a recently proposed algorithm by Koschat and Swayne for weighted Procrustes rotation as a special case. A number of trial analyses demonstrate that the refined majorization procedure is more efficient than the earlier majorization-based procedure. The research of H. A. L. Kiers has been made possible by a fellowship from the Royal Netherlands Academy of Arts and Sciences.  相似文献   

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知识资本是知识经济的灵魂,在知识资本化的条件下,伦理价值也会随着知识的功能扩张而扩张,伦理“知识”也会物化为资本。人力资本理论的诞生为伦理价值的资本化提供了条件和途径,使伦理价值资本化成为现实。伦理资本除了具有人力资本的一般特征外,还有自己的特殊性。  相似文献   

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