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61.
Tracking tasks known to facilitate or interfere with one another were investigated under various sequences of alternation. Double and treble alternating sequences of 2 tasks were used. 6 groups of 12 Ss practiced for 20 10-sec. trials, with 50-sec. intertrial intervals. Trend analyses were employed in comparing the results of the double and treble alternating sequences with the single alternating sequence and postshift trials of the previous study (Laszlo & Pritchard, 1969). The results showed that facilitation or interference lost with single alternation was recovered with double or treble alternating sequences. Rate and degree of recovery appeared to depend upon the degree of transfer between tasks and strategies employed by S. These results were discussed in terms of motor program consolidation. 相似文献
62.
This paper explores the ramifications of the extended cognition thesis in the philosophy of mind for contemporary epistemology. In particular, it argues that all theories of knowledge need to accommodate the ability intuition that knowledge involves cognitive ability, but that once this requirement is understood correctly there is no reason why one could not have a conception of cognitive ability that was consistent with the extended cognition thesis. There is thus, surprisingly, a straightforward way of developing our current thinking about knowledge such that it incorporates the extended cognition thesis. 相似文献
63.
64.
Scott R. Carlson Ashley A. Pritchard Rachelle M. Dominelli 《Personality and individual differences》2013
The UPPS-P Impulsive Behavior scale is a promising measure of impulsivity facets involved in the etiology of Externalizing behaviors (e.g., substance abuse, antisocial behavior, and aggression). The purpose of this study was to determine whether measures of motivational systems, specifically Reward and Punishment Sensitivity, accounted for variance in Externalizing behaviors beyond the UPPS-P scales. Undergraduates (N = 282; 50% men) completed online self-reports of alcohol and drug use, antisocial behavior, and aggression, as well as the UPPS-P and measures of Reward and Punishment Sensitivity. Principal components analysis was used to create summary Externalizing scores related to Disinhibition and Aggression. Lack of Premeditation, low Perseverance and Sensation Seeking had significant partial relationships with Disinhibition, but Reward Sensitivity accounted for additional variance. Both Reward Sensitivity and (Low) Punishment Sensitivity were related to Aggression, beyond variance explained by UPPS-P Negative Urgency and (lack of) Perseverance. Impulsivity facets appear to have differential relationships with measures of Externalizing and, although the UPPS-P accounts for a significant portion of individual differences, it does not fully account for variance associated with Reward and Punishment Sensitivity. 相似文献
65.
Duncan Pritchard 《Philosophical Studies》2009,143(3):407-416
66.
67.
Duncan Pritchard 《Metaphilosophy》2003,34(1-2):106-130
The recent movement towards virtue–theoretic treatments of epistemological concepts can be understood in terms of the desire to eliminate epistemic luck. Significantly, however, it is argued that the two main varieties of virtue epistemology are responding to different types of epistemic luck. In particular, whilst proponents of reliabilism–based virtue theories have been focusing on the problem of what I call "veritic" epistemic luck, non–reliabilism–based virtue theories have instead been concerned with a very different type of epistemic luck, what I call "reflective" epistemic luck. It is argued that, prima facie at least, both forms of epistemic luck need to be responded to by any adequate epistemological theory. The problem, however, is that one can best eliminate veritic epistemic luck by adducing a so–called safety–based epistemological theory that need not be allied to a virtue–based account, and there is no fully adequate way of eliminating reflective epistemic luck. I thus conclude that this raises a fundamental difficulty for virtue–based epistemological theories, on either construal. 相似文献
68.
THE STRUCTURE OF SCEPTICAL ARGUMENTS 总被引:2,自引:0,他引:2
It is nowadays taken for granted that the core radical sceptical arguments all pivot upon the principle that the epistemic operator in question is 'closed' under known entailments. Accordingly, the standard anti-sceptical project now involves either denying closure or retaining closure by amending how one understands other elements of the sceptical argument. However, there are epistemic principles available to the sceptic which are logically weaker than closure but achieve the same result. Accordingly the contemporary debate fails to engage with the sceptical problem in its strongest form. 相似文献
69.
Executive functions (EF) necessary for purposeful goal-directed activities undergo rapid change and development during the preschool years. However, of the few psychometrically valid measures of EF suitable for use with preschoolers, information on task sensitivity and predictive validity is scant. The neurodevelopmental correlates of early executive difficulties are also largely unknown. In this study, the discriminant and predictive validity of the recently developed Shape School task (Espy, Bull, Martin, & Stroup, 2006) was examined with data from a regional sample of 209 preschool children at age 4 years. A 2-tiered measurement approach was used, with task completion examined in addition to efficiency. Children's performance was also examined in relation to functioning in a range of neurodevelopmental domains. The Shape School task showed some usefulness in capturing expected differences between at-risk and typically developing children. Performance loaded heavily on language and global cognitive abilities. However, several other factors were also implicated, including attention, motor skills, and ocular control. In addition, task completion and efficiency scores appeared to reflect different aspects of performance, and their associations with neurodevelopmental function and later academic achievement on the Woodcock-Johnson Tests of Achievement at age 6 years also differed. Implications for the application of the Shape School task are discussed. 相似文献
70.
Duncan Pritchard 《Philosophical Studies》2006,130(1):35-45
I outline Greco’s response to the Pyrrhonian challenge to epistemic externalist theories of knowledge and offer two points
of criticism. I also argue, however, that there is an account of epistemic luck available which can cast some light on the
dispute that Greco is concerned with, and which could, in principle at least, be regarded as being in the spirit of the proposal
that Greco sets out. 相似文献