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501.
Jacob P 《Consciousness and cognition》2009,18(1):229-243
The tuning-fork model of human social cognition, based on the discovery of mirror neurons (MNs) in the ventral premotor cortex of monkeys, involves the four following assumptions: (1) mirroring processes are processes of resonance or simulation. (2) They can be motor or non-motor. (3) Processes of motor mirroring (or action-mirroring), exemplified by the activity of MNs, constitute instances of third-person mindreading, whereby an observer represents the agent's intention. (4) Non-motor mirroring processes enable humans to represent others' emotions. After questioning all four assumptions, I point out that MNs in an observer's brain could not synchronically resonate with MNs in an agent's brain unless they discharged in a single brain in two distinct tasks at different times. Finally, I sketch a conceptualist alternative to the resonance model according to which a brain mechanism active in both the execution and the perception of e.g., the act of grasping is the neural basis of the concept of e.g., grasping. 相似文献
502.
Arnaud Rey Pierre Courrieu Florian Schmidt-Weigand Arthur M. Jacobs 《Psychonomic bulletin & review》2009,16(3):600-608
Standard factorial designs in psycholinguistics have been complemented recently by large-scale databases providing empirical
constraints at the level of item performance. At the same time, the development of precise computational architectures has
led modelers to compare item-level performance with item-level predictions. It has been suggested, however, that item performance
includes a large amount of undesirable error variance that should be quantified to determine the amount of reproducible variance
that models should account for. In the present study, we provide a simple and tractable statistical analysis of this issue.
We also report practical solutions for estimating the amount of reproducible variance for any database that conforms to the
additive decomposition of the variance. A new empirical database consisting of the word identification times of 140 participants
on 120 words is then used to test these practical solutions. Finally, we show that increases in the amount of reproducible
variance are accompanied by the detection of new sources of variance. 相似文献
503.
Pierre Collerette Marina Manghi Paul Legris 《Psychologie du Travail et des Organisations》2009,15(1):77-99
This article is about a case of successful introduction of a technological change in a police department. It presents the links observed between the approach used to manage the transition and the perception that end-users reported regarding their stress, their health condition, and their efficiency at work. End-users of the new system reported a high level of satisfaction towards the method used, with few problems related to their stress, their health condition, and their global efficiency. People who reported such problems also reported more problems integrating the change. Close guidance provided to workers at field level and active support to enhance a fast mastering of the new skills seem to have played a major role. 相似文献
504.
All experimental psychologists understand the importance of randomizing lists of items. However, randomization is generally
constrained, and these constraints—in particular, not allowing immediately repeated items— which are designed to eliminate
particular biases, frequently engender others. We describe a simple Monte Carlo randomization technique that solves a number
of these problems. However, in many experimental settings, we are concerned not only with the number and distribution of items
but also with the number and distribution of transitions between items. The algorithm mentioned above provides no control
over this. We therefore introduce a simple technique that uses transition tables for generating correctly randomized sequences.
We present an analytic method of producing item-pair frequency tables and item-pair transitional probability tables when immediate
repetitions are not allowed. We illustrate these difficulties and how to overcome them, with reference to a classic article
on word segmentation in infants. Finally, we provide free access to an Excel file that allows users to generate transition
tables with up to 10 different item types, as well as to generate appropriately distributed randomized sequences of any length
without immediately repeated elements. This file is freely available from http://leadserv.u-bourgogne.fr/IMG/xls/TransitionMatrix.xls. 相似文献
505.
Time and cognitive load in working memory 总被引:2,自引:0,他引:2
Barrouillet P Bernardin S Portrat S Vergauwe E Camos V 《Journal of experimental psychology. Learning, memory, and cognition》2007,33(3):570-585
According to the time-based resource-sharing model (P. Barrouillet, S. Bernardin, & V. Camos, 2004), the cognitive load a given task involves is a function of the proportion of time during which it captures attention, thus impeding other attention-demanding processes. Accordingly, the present study demonstrates that the disruptive effect on concurrent maintenance of memory retrievals and response selections increases with their duration. Moreover, the effect on recall performance of concurrent activities does not go beyond their duration insofar as the processes are attention demanding. Finally, these effects are not modality specific, as spatial processing was found to disrupt verbal maintenance. These results suggest a sequential and time-based function of working memory in which processing and storage rely on a single and general purpose attentional resource needed to run executive processes devoted to constructing, maintaining, and modifying ephemeral representations. 相似文献
506.
Lima FS Simioni S Bruggimann L Ruffieux C Dudler J Felley C Michetti P Annoni JM Schluep M 《Behavioural neurology》2007,18(2):81-90
Acquired behavioral changes have essentially been described in advanced multiple sclerosis (MS). The present study was designed to determine whether behavioral modifications specifically related to the MS pathological process could be identified in the initial phase of the disease, as compared to control patients with chronic, relapsing and progressive inflammatory disorders not involving the central nervous system (CNS). Eighty-eight early MS patients (Expanded Disability Status Scale score 相似文献
507.
In this study, we developed a digitizing tablet-based instrument for the clinical assessment of human voluntary movements targeting motor processes of planning, programming and execution. The tool was used to investigate an adaptation of Fitts' reciprocal tapping task [10], comprising four conditions, each of them modulated by three indices of difficulty related to the amplitude of movement required. Temporal, spatial and sequential constraints underlying the various conditions allowed the intricate motor processes to be dissociated. Data obtained from a group of elderly healthy subjects (N=50) were in agreement with the literature on motor control, in the temporal and spatial domains. Speed constraints generated gains in the temporal domain and costs in the spatial one, while spatial constraints generated gain in the spatial domain and costs in the temporal one; finally, sequential constraints revealed the integrative nature of the cognitive operations involved in motor production. This versatile instrument proved capable of providing quantitative, accurate and sensitive measures of the various processes sustaining voluntary movement in healthy subjects. Altogether, analyses performed in this study generated a theoretical framework and reference data which could be used in the future for the clinical assessment of patients with various movement disorders, in particular Parkinson's disease. 相似文献
508.
The clinical representativeness of outcome studies is defined as the generalizability of recruitment processes, assessment/diagnostic procedures, treatment protocols, and therapeutic results from research settings to naturalistic treatment settings. The main goal of the present study was to examine the clinical representativeness of couple therapy in outcome studies. The data set was formed by 50 published clinical trials, including 34 couple therapy outcome studies for marital distress (CTMD) and 16 couple therapy outcome studies for comorbid relational and mental disorders (CTMD + C). The present findings showed that, overall, the clinical representativeness of couple therapy outcome studies is only fair (i.e., the mean global score is slightly lower than the midpoint of the rating scale used to assess representativeness). CTMD + C studies fared better than CTMD studies on many dimensions of clinical relevance. Studies in which pretherapy training was less intensive (for CTMD studies only), treatment was less structured, and therapists were more experienced showed larger effect sizes than those in which such was not the case. 相似文献
509.
This paper describes aggressive behaviour in the cockroach Schultesia nitor, a tropical forest species living in bird nests. Young S. nitor nymphs are known to show active dispersal while old nymphs and adults are contrastingly strongly gregarious, a combination of features never observed in other cockroach species. Our laboratory experiments using video recording of confrontations between pairs show that aggressive behaviour towards conspecific nymphs is not exhibited towards nymphs of the species Phoetalia pallida, and thus can be considered species specific in S. nitor. But, it is not kin oriented: the mother and all adults of both sexes in different physiological states exhibit this behaviour as well. Six types of aggressive interactions were discriminated, occurring in age-symmetric pairs of nymphs and adults. Even more frequent aggression was exhibited by adults and last instar nymphs towards younger nymphs of all instars. The frequency of aggressive acts and types of aggressive interactions varied according to sex and size of the two interacting individuals. The possible function and evolution of this behaviour is discussed, with emphasis on the difficulty of interpreting obvious but weak and not kin-biased aggression. 相似文献
510.
Christian Sachse 《Erkenntnis》2007,67(2):201-205
In his work, Horgan argues for the compatibilism of agency, mental state-causation, and physical causal-closure. We generally
assume a causally closed physical world that seems to exclude agency in the sense of mental state-causation in addition to
physical causation. However, Horgan argues for an account of agency that satisfies the experience of our own as acting persons
and that is compatible with physical causal-closure. Mental properties are causal properties but not identical with physical
properties because there are different ontological levels. In this commentary, I shall reconsider the essential issues of
this compatibilism (1), focus on a problem for Horgan’s conception of agent causation that arises from the causal argument
for ontological reductionism (2), and propose to embed Horgan’s conception of agency within a reductionist approach in order
to vindicate the indispensable character of agency (3).
相似文献
Christian SachseEmail: |