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Working memory (WM) has been predominantly studied in adults. The insights provided by these studies have led to the development of competing theories on the structure of WM and conflicting conclusions on how strongly WM components are related to higher order thinking skills such as fluid intelligence. However, it remains unclear whether and to what extent the theories and findings derived from adult data generalize to children. The purpose of the present study is therefore to investigate children's WM (N = 161), who attended classes at the end of kindergarten in Luxembourg. Specifically, we examine different structural models of WM and how its components, as defined in these models, are related to fluid intelligence. Our results indicate that short-term storage capacity primarily explains the relationship between WM and fluid intelligence. Based on these observations we discuss the theoretical and methodological issues that arise when children's WM is investigated. 相似文献
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Executive dysfunctions can be frequently observed in schizophrenia. They are more persistent than psychotic symptoms and are assumed to contribute to a variety of clinical signs of the disease. However, the cognitive mechanisms underlying dysexecutive behaviors are not yet understood. The aim of this article is to demonstrate how saccade tasks can be used to analyze the mechanisms involved in the dysexecutive syndrome of schizophrenic patients. There are numerous reports showing that schizophrenic patients make many unwanted reflexive saccades in the antisaccade task. These errors are usually explained by an impairment of a distinct inhibitory mechanism. However, unwanted reflexive saccades may also be secondary to a more fundamental deficit in activating goal-directed behavior. Recent theoretical and empirical approaches to this issue are reviewed and discussed. An integrative view of deficits in inhibition, goal-directed behavior, and working memory in schizophrenic patients is proposed. 相似文献
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Sebastian Markett Christian Montag Martin Melchers Bernd Weber Martin Reuter 《Cognitive, affective & behavioral neuroscience》2016,16(6):1039-1049
The brain is an intricate network, not only structurally but also functionally. On the functional level, connectivity in the brain is organized in separable yet interacting networks that support information processing by maintaining a ready state, even in the absence of external stimulation. It has been hypothesized that an insular-opercular network underlies the processing of emotionally salient information and that individual differences in functional connectivity within this network correspond to individual differences in trait anxiety. Here, we tested this relationship by applying graph analysis to multiple regions of interests delineating the insular-opercular network to estimate the characteristic path length that quantifies the overall information exchange efficiency within a given network. We found that people scoring high on the anxiety-related temperament-dimension harm avoidance had decreased insular-opercular network efficiency in the resting state, as indicated by a higher characteristic path length. Furthermore, people scoring high on harm avoidance showed generally reduced functional connectivity between brain regions; the relationship between harm avoidance and insular-opercular network efficiency remained significant when controlling for mean connectivity within this network. No such results were found for other resting-state networks. The results provide insights into how personality is organized in the human brain and point toward clinically relevant endophenotypes for affective and mood disorders. 相似文献
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How does explicit theological knowledge emerge out of communal practices, who is involved in its production, and what are its procedures? These are neither neutral nor arbitrary methodological questions; they are themselves deeply theological. Digital innovations and the subsequent transformations of society and academia invite us to redefine the work of theology. Epistemologically drawing on a theology of the cross and centring the communal nature and vulnerable existence of the witnessing community, we develop a model of doing theology that is collaborative and exploratory within the medial transformations of the digital age. Taking cues from participatory research conceptions of “citizen science,” we propose going toward and beyond a “citizen theology.” We need the courage to conceive of a theology that is ultimately centreless. Therefore, we cannot aspire to testimonially responsible forms of doing theology without striving for epistemic justice and diaconal empowerment at a global level. The “distributed theology” we envision promotes global (catholic), decentral (apostolic), and communal (local) forms of knowledge production by the whole of the body of Christ in ever more distributed ways. 相似文献
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