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This paper is concerned with the role of working memory resources in mental multiplication. In two experiments a dual-task paradigm was used. In the first experiment neutral tapping was contrasted to three modalityspecific secondary tasks: Irrelevant speech and articulatory suppression were used to disrupt the phonological loop and a visuo-spatial tapping was used to disrupt the visuo-spatial sketchpad. Multiplication sums needed to be solved mentally and results needed to be spoken aloud. Sums varied in difficulty (easy, e.g., 3 x 4 =, difficult, e.g., 8 x 17 =). Results from the first experiment revealed declines in performance on difficult sums under articulatory suppression but no interference effect for easy sums. To investigate the role of central executive processes, a second experiment extended the range of interference conditions to a central executive interference task (random letter generation). Now articulatory suppression and random generation caused a decrease of performance on difficult sums. In addition, performance on easy sums was negatively impacted by random letter generation as well. We infer that solving complex multiplication sums demands phonological loop and central executive processes, whereas retrieving numerical facts in solving simple multiplication sums requires only central executive processes. We found no evidence of modality-specific access to numerical facts stored in long-term memory. 相似文献
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The effective management of energy is an important dimension in the martial arts as well as the mental health professions. The Oriental concept of Ki is described, noting its Indian, Chinese, and Japanese development. Ki and the transfer of energy is studied through the martial encounter, using concepts borrowed from Japanese swordsmanship. Ki is also discussed from a developmental context as youngsters progress in Tae Kwon Do training. In examining the disciplines of Aikido, Tae Kwon Do, and Karate, it becomes clear that more is involved than kicking, punching, and throwing bodies on the floor. These martial arts have some important statements to make in the area of mental health, particularly in terms of energy--within our bodies, psyches, interpersonal relationships, and the universe. 相似文献
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Steven Thomas Seitz 《Synthese》1994,100(3):461-495
This paper examines the role of power structures and strategic decisions in trajectories toward war and peace. Part I introduces a fuzzy inference engine for computationally simulating balance of power. Part II compares simulation results from hegemonic, bi-polar, and multi-polar system structures, each with three actors. Part III explores strategies for maximizing peace under each of these system structures. Part IV applies these lessons to real-world event chronologies. 相似文献
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Language processing in bilinguals 总被引:2,自引:0,他引:2
The present study investigated the language processing strategies of three subgroups of adult bilinguals with different histories of language acquisition: infant bilinguals whose bilinguality dated from infancy; childhood bilinguals who became bilingual around 5 years of age; and adolescent bilinguals who had become bilingual at secondary school age only. All were completely balanced bilinguals in French and English at the time of testing. The experimental procedure, a language recognition task, required the subjects to indicate, by pressing a response button, whether each of a series of words, presented monaurally through earphones, was French or English. Concomitantly, left and right hemisphere EEG activity was monitored, with measures taken of latency to N1, latency to P2, and N1-P2 peak-to-peak amplitudes. Results indicated shorter latencies to N1 in the left than in the right hemisphere for the infant and childhood bilinguals but shorter latencies in the right hemisphere for the adolescent bilinguals. Overall, the N1 latency was shorter for the adolescent subgroup than for the two other subgroups. There were no RT differences. The findings appear to reflect strategy differences: The adolescent group seemed to rely more on a right hemisphere-based, possibly more gestalt-like or melodic strategy, while the early bilinguals relied more on a left hemisphere-based, possibly semantic or analytic type of strategy. The results are discussed in terms of previous research on bilingual subtypes and general forms of language processing among bilinguals. 相似文献
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The research examined an additional proposed moderator of the attitude-behavior relationship: the activity level of emotions associated with an attitude object. In Experiment 1, participants who self-generated active rather than passive emotions as being associated with gay men displayed greater attitude-behavior consistency in hiring recommendations for a gay job applicant, as did participants who rated active rather than passive experimenter-provided emotions as being associated with gay men. In Experiment 2, participants who were instructed to associate active rather than passive emotions with gay men subsequently displayed greater attitude-behavior consistency in similar hiring recommendations. It is suggested that future research on the affective component of attitudes might benefit from going beyond consideration of whether the associated emotions entail displeasure or pleasure. 相似文献