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11.
Gregor Betz 《Synthese》2008,163(1):25-44
This paper shows how complex argumentation, analyzed as dialectical structures, can be evaluated within a Bayesian framework
by interpreting them as coherence constraints on subjective degrees of belief. A dialectical structure is a set of arguments
(premiss-conclusion structure) among which support- and attack-relations hold. This approach addresses the observation that
some theses in a debate can be better justified than others and thus fixes a shortcoming of a theory of defeasible reasoning
which applies the bivalence principle to argument evaluations by assigning them the status of being either defeated or undefeated.
Evaluation procedures which are based on the principle of bivalence can, however, be embedded as a special case within the
Bayesian framework. The approach developed in this paper rests on the assumptions that arguments can be reconstructed as deductively
valid and that complex argumentation can be reconstructed such that premisses of arguments with equivalent conclusions are
pairwise independent. 相似文献
12.
The present investigation examined the singular and interactive effects of anxiety sensitivity and perceived control over anxiety-related events in the prediction of panic symptoms using a CO(2)-enriched air biological challenge. Two hundred and twenty-nine adult participants (M(age)=21.02, SD=7.55, 124 females) were recruited from the greater Burlington, Vermont community. Results indicated that pre-challenge anxiety sensitivity, but not perceived control over anxiety-related events, significantly predicted post-challenge panic attack symptoms, anxiety focused on bodily sensations, and, interest in returning for another challenge (behavioral avoidance). In regard to physiological findings, anxiety sensitivity was significantly related to skin conductance level whereas perceived control over anxiety-related events was related to respiration rate. Neither anxiety sensitivity nor perceived control over anxiety-related events was related to heart rate. There also were no interactive effects between anxiety sensitivity and perceived control over anxiety-related events for any of the studied dependent variables. Results are discussed in relation to multi-risk factor models of cognitive vulnerability for panic psychopathology. 相似文献
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Gregor Betz 《Journal of Philosophical Logic》2009,38(3):283-312
This paper develops concepts and procedures for the evaluation of complex debates. They provide means for answering such questions
as whether a thesis has to be considered as proven or disproven in a debate or who carries a burden of proof. While being
based on classical logic, this framework represents an (argument-based) approach to non-monotonic, or defeasible reasoning.
Debates are analysed as dialectical structures, i.e. argumentation systems with an attack- as well as a support-relationship.
The recursive status assignment over the arguments is conditionalised on proponents in a debate. The problem of multiple status
assignments arising on circular structures is solved by showing that uniqueness can be guaranteed qua reconstruction of a
debate. The notion of burden of proof as well as other discursive aims rational proponents pursue in a debate is defined within
the framework. 相似文献
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16.
We designed and tested a novel technology that enables us to capture the entire stream of behavior in perseverative reaching tasks. Beyond fitting the criteria of the conventional A-not-B task, the novel technology gives us better access to the core features of perseverative reaching, such as timing, behavior history, and reinforcement. The technology allows us to quantitatively manipulate reinforcement characteristics, to accurately program onsets, delays, and stimulus durations as well as locations and salience of the targets, and to automatically record the number of reaches to each target and compute timing. We did a validation study on this new technology, investigating the influence of a number of novel factors on perseverative reaching. We replicated the A-not-B phenomenon and associated developmental changes. In addition, results demonstrated that the new technology offers insights into infants' behavior beyond the first reaching action. Moreover, data collection is fully automated, yielding precise, quantitative data. Future studies using this technology will capitalize on the salient advantages of this technology to more precisely measure goal-directed actions and understand the development of reaching skill. 相似文献
17.
McLeish AC Zvolensky MJ Smits JA Bonn-Miller MO Gregor KL 《Cognitive behaviour therapy》2007,36(1):1-11
The aim of this investigation was to evaluate the incremental validity of anxiety sensitivity (fear of arousal-related physical and psychological sensations) relative to health factors (smoking variables, alcohol use and exercise level), in predicting perceived health and disability among a sample of 225 young adult daily smokers (102 females; M(age) = 23.9 years, SD = 8.8). Consistent with prediction, anxiety sensitivity, relative to smoking-relevant variables, alcohol consumption (a single frequency by quantity composite) and exercise activity, predicted lower perceived general health and impairments in mental health and social functioning; no incremental effects were evident for anxiety sensitivity for predicting impairments in physical functioning, role functioning, or increased healthcare usage. These findings are discussed with respect to better understanding cognitive factors that affect perceptions of health status and functioning among daily smokers. 相似文献
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Ohne ZusammenfassungDie vorliegende Arbeit stellt einen Auszug aus einer Semesterarbeit über Probleme des guten Eindrucks dar, die auf Anregung von Prof. Dr. E. Rausch von H. Gregor im Sommer 1960 dunchgeführt wurde. 相似文献
20.
In the current study, 24‐ to 27‐month‐old children (N = 37) used pointing gestures in a cooperative object choice task with either peer or adult partners. When indicating the location of a hidden toy, children pointed equally accurately for adult and peer partners but more often for adult partners. When choosing from one of three hiding places, children used adults’ pointing to find a hidden toy significantly more often than they used peers’. In interaction with peers, children's choice behavior was at chance level. These results suggest that toddlers ascribe informative value to adults’ but not peers’ pointing gestures, and highlight the role of children's social expectations in their communicative development. 相似文献