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211.
Elisa Infanti Clayton Hickey Nicholas Menghi Massimo Turatto 《Visual cognition》2017,25(9-10):956-971
Reward can benefit visual processing of reward-associated objects in a non-strategic way. Recent studies have suggested that such influence extends also to visual working memory (VWM) representations of reward-associated stimuli. However, it is not clear yet which mechanisms underlie the behavioural effects in VWM tasks: reward could directly impact on our ability to maintain representations in VWM or it could influence memory indirectly via priming of attentional selection. To distinguish between these alternatives we measured event-related potential indices of selective attention – the N2pc – and VWM maintenance – the CDA (contralateral delay activity) – while participants completed a VWM task. Results show that reward outcome in one trial caused similarly coloured targets to be strongly represented in VWM in subsequent trials, as expressed in a larger-amplitude CDA This was not preceded by a corresponding effect on attentional selection, in so far as our key manipulation had no impact on the N2pc. In a second experiment, we found that reward priming produced a behavioural benefit that emerged over time, suggesting that the representations of reward-associated items stored in VWM are more resistant to interference and decay. We conclude that when the task stresses VWM maintenance, it is at this representational level that reward will have impact. 相似文献
212.
Evangelia-Chrysanthi Kouklari Trevor Thompson Claire P. Monks Stella Tsermentseli 《Journal of cognition and development》2017,18(4):399-418
Previous research has clearly demonstrated that autism spectrum disorder (ASD) involves deficits in multiple neuropsychological functions, such as executive function (EF) and theory of mind (ToM). A conceptual distinction is commonly made between cool and hot EF. In ASD, continued attention has been paid to the cool areas of executive dysfunction. Cool EF has been strongly related to ToM, but research has not taken into account the association between hot EF and ToM in ASD. The present study investigated the associations between hot and cool EF and ToM in 56 school-aged children with ASD and 69 controls on tasks tapping cool EF (i.e., working memory, inhibition, planning), hot EF (i.e., affective decision making, delay discounting), and ToM (i.e., mental state/emotion recognition and false belief). Significant group differences in each EF measure support an executive dysfunction in both domains in ASD. Strong associations between delay discounting and ToM mental state/emotion recognition were found, suggesting that hot EF makes a unique contribution to ToM above and beyond cool EF in typical development and ASD. This study improves understanding of the profile of higher-order cognitive deficits in children with ASD, which may inform diagnosis and intervention. 相似文献
213.
A microswitch‐based program for promoting initial ambulation responses: An evaluation with two girls with multiple disabilities 下载免费PDF全文
Fabrizio Stasolla Alessandro O. Caffò Viviana Perilli Adele Boccasini Anna Stella Rita Damiani Vincenza Albano Concetta Damato 《Journal of applied behavior analysis》2017,50(2):345-356
We assessed the use of a microswitch‐based program for promoting ambulation responses by two children with multiple disabilities. The goals of the study were to: (a) evaluate the importance of the contingency between the target behavior (forward step) and the programmed consequence (preferred stimuli), (b) measure effects of the intervention on indices of happiness, and (c) assess the social validation of the procedure using 20 physiotherapists as external raters. The intervention involved the automatic delivery of preferred stimuli contingent on forward steps. Results showed that both participants improved their performance (forward steps and indices of happiness) during contingent reinforcement phases compared to baseline and noncontingent reinforcement phases. Moreover, physiotherapists rated the intervention as socially valid. 相似文献
214.
Huttenlocher J Hedges LV Lourenco SF Crawford LE Corrigan B 《Journal of experimental psychology. General》2007,136(3):502-519
In this article, the authors present and test a formal model that holds that people use information about category boundaries in estimating inexactly represented stimuli. Boundaries restrict stimuli that are category members to fall within a particular range. This model posits that people increase the average accuracy of stimulus estimates by integrating fine-grain values with boundary information, eliminating extreme responses. The authors present 4 experiments in which people estimated sizes of squares from 2 adjacent or partially overlapping stimulus sets. When stimuli from the 2 sets were paired in presentation, people formed relative size categories, truncating their estimates at the boundaries of these categories. Truncation at the boundary of separation between the categories led to exaggeration of differences between stimuli that cross categories. Yet truncated values are shown to be more accurate on average than unadjusted values. 相似文献
215.
Using geometry to specify location: implications for spatial coding in children and nonhuman animals
The study of spatial cognition has benefited greatly from a technique known as the disorientation procedure. This procedure
was originally used with rats to show that they relied on the geometry of an enclosed space to locate a target hidden in that
space. Disorientation has since been used with a variety of mobile animals, including human children, to examine the coding
of geometric information. Here, we focus mostly on our recent work with young children. We examine a set of issues concerning
reorientation—namely, the nature of geometric coding, the processes invoked by disorientation, and the developmental origins
of using geometric information to determine location. We have employed a variety of methods to examine these issues; the methods
include analyzing search behaviors, using spaces of different shapes, varying viewing position, and comparing different disorientation
procedures. The implications for how children and nonhuman animals code geometric information are discussed. 相似文献
216.
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218.
Massimo Ammaniti 《Infant mental health journal》1991,12(3):246-255
This paper deals with the influence of maternal representations during pregnancy on the subsequent mother-infant relationship and the infant's style of attachment at 1 year of age. Psychoanalytic thinking, beginning with Freud to the most recent contributions, has considered the great importance of the mental dynamics between parents and children to which empirical research according to Bowlby's theoretical perspective has contributed. The current research project was planned in order to study the intergenerational processes. Starting during pregnancy, the woman was interviewed specifically to study maternal representations of herself as a mother and of the future baby. When the child was 1 year old, the style of attachment was studied during the Ainsworth Strange Situation paradigm and, at the same time, the mother was given the Adult Attachment Interview. Case studies are presented to illustrate, from the clinical point of view, the mental dynamics during pregnancy and the influence on the style of attachment of the baby. The clinical implications are discussed especially in terms of the fantasies in pregnancy and their relevance for the subsequent mother-infant relationship. 相似文献
219.
We present an account of semantics that is not construed as a mapping of language to the world but rather as a mapping between individual meaning spaces. The meanings of linguistic entities are established via a “meeting of minds.” The concepts in the minds of communicating individuals are modeled as convex regions in conceptual spaces. We outline a mathematical framework, based on fixpoints in continuous mappings between conceptual spaces, that can be used to model such a semantics. If concepts are convex, it will in general be possible for interactors to agree on joint meaning even if they start out from different representational spaces. Language is discrete, while mental representations tend to be continuous—posing a seeming paradox. We show that the convexity assumption allows us to address this problem. Using examples, we further show that our approach helps explain the semantic processes involved in the composition of expressions. 相似文献
220.
Luigi Solano Massimo Costa Lydia Temoshok Simonetta Salvati Rosamaria Coda Fernando Aiuti 《Psychology & health》2013,28(5):641-655
This study examined the effects of specific psychosocial factors on the progression of HIV infection in 200 HIV-1 seropositive but asymptomatic men and women. At baseline, participants' disease status was determined, and they were administered self-report assessments of coping style, social support and loneliness. Participants were classified at 6 and 12 month follow-ups as progressed or unchanged, compared to their baseline status. In logistic regression analyses, higher baseline Type C coping scores (indicating emotional inexpressiveness and decreased recognition of needs and feelings) significantly predicted progression at 6 months ( p <0.01) and 12 months ( p <0.02), but only among participants classified at baseline as CDC-A2 (between 200-499 CD4 cells/mm 3 ). In participants originally classified as CDC-A1 (CD4 cell counts > 500/mm 3 ), no psychosocial variable showed any significant relationship. Results emphasize the need to consider the disease context, as well as the interaction between biological and psychological factors in contributing to disease progression. 相似文献