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451.
场依存—独立认知方式干扰抑制的比较 总被引:1,自引:0,他引:1
采用镶嵌图形测验筛选出28名被试完成Stroop干扰任务,探讨场依存—独立认知方式的个体在信息加工过程中对无关信息干扰抑制机制的特点和差异。结果表明:(1)场独立者在认知加工中具有较场依存者更强的对无关信息干扰的抑制效能。(2)在Stroop任务中,对字色也存在自动化加工,只是自动化程度较低。 相似文献
452.
453.
Michael Tomasello提出的用法建构语言获得理论认为儿童语言获得是一个以用法为基础、以功能为引导的逐步建构过程,而个体语言获得又以种系遗传的生物基础和文化历史积淀下来的语言环境为前提。本文在皮亚杰经典建构主义的框架下探讨Tomasello关于语言获得的建构观。 相似文献
454.
Internet gratifications and internet addiction: on the uses and abuses of new media. 总被引:9,自引:0,他引:9
Indeok Song Robert LaRose Matthew S Eastin Carolyn A Lin 《Cyberpsychology & behavior》2004,7(4):384-394
Internet addiction has been identified as a pathological behavior, but its symptoms may be found in normal populations, placing it within the scope of conventional theories of media attendance. The present study drew upon fresh conceptualizations of gratifications specific to the Internet to uncover seven gratification factors: Virtual Community, Information Seeking, Aesthetic Experience, Monetary Compensation, Diversion, Personal Status, and Relationship Maintenance. With no parallel in prior research, Virtual Community might be termed a "new" gratification. Virtual Community, Monetary Compensation, Diversion, and Personal Status gratifications accounted for 28% of the variance in Internet Addiction Tendency. The relationship between Internet addiction and gratifications was discussed in terms of the formation of media habits and the distinction between content and process gratifications. 相似文献
455.
It is now well-documented that exposures to uncontrollable (inescapable and unpredictable) stress in adulthood can have profound effects on brain and behavior. Converging lines of evidence from human and animal studies indicate that stress interferes with subsequent performances on a variety of hippocampal-dependent memory tasks. Animal studies further revealed that stress impedes ensuing induction of long-term potentiation (LTP) in the hippocampus. Because the hippocampus is important for key aspects of memory formation and because LTP has qualities congruent to an information storage mechanism, it is hypothesized that stress-induced modifications in hippocampal plasticity contribute to memory impairments associated with stress. Recent studies provide evidence that the amygdala, a structure important in stress- and emotion-related behaviors, plays a necessary role in the emergence of stress-associated changes in hippocampal LTP and memory. Early life stress also alters hippocampal plasticity and memory in a manner largely consistent with effects of adult stress exposure. This review focuses on endocrine-system-level mechanisms of stress effects in the hippocampus, and how stress, by altering the property of hippocampal plasticity, can subsequently influence hippocampal memory. 相似文献
456.
Humans show implicit memory for complex spatial layouts, which aids in subsequent processing of these layouts. Research efforts
in the past 5 years have focused primarily on a single session of training involving a dozen repeated displays. Yet every
day, people encounter many more visual layouts than were presented in such experiments. In this study, we trained subjects
to learn 60 repeated displays, randomly intermixed within 1,800 nonrepeated displays, spread over 5 consecutive days. On each
day, the subjects conducted visual search on 360 new displays and a new set of 12 repeated displays, each repeated 30 times.
Contextual memory was observed daily. One week after the fifth session, the subjects still searched faster on the repeated
displays learned previously. We conclude that the visual system has a high capacity for learning and retaining repeated spatial
context, an ability that may compensate for our severe limitations in visual attention and working memory. 相似文献
457.
Jiang Y Song JH 《Journal of experimental psychology. Human perception and performance》2005,31(6):1439-1448
Humans conduct visual search faster when the same display is presented for a 2nd time, showing implicit learning of repeated displays. This study examines whether learning of a spatial layout transfers to other layouts that are occupied by items of new shapes or colors. The authors show that spatial context learning is sometimes contingent on item identity. For example, when the training session included some trials with black items and other trials with white items, learning of the spatial layout became specific to the trained color--no transfer was seen when items were in a new color during testing. However, when the training session included only trials in black (or white), learning transferred to displays with a new color. Similar results held when items changed shapes after training. The authors conclude that implicit visual learning is sensitive to trial context and that spatial context learning can be identity contingent. 相似文献
458.
The authors propose a multidisciplinary model of the predictors of reemployment and test its predictive validity for explaining reemployment success. Predictor variables from the fields of economics, sociology, and psychology are incorporated into the model. Reemployment success is conceptualized as a construct consisting of unemployment insurance exhaustion and reemployment speed, and for reemployed persons, job improvement, job-organization fit, and intention to leave the new job. Direct, mediated, and moderated relationships were hypothesized and tested, clarifying the role of the variables in the reemployment process and outcome. The authors' proposal and examination of a multidisciplinary model of reemployment success contributes to a literature that has not tended to adequately cross disciplinary boundaries. 相似文献
459.
This article examines the evolution of musculoskeletal (MSK) disability and its impact on mortality and work patterns in the late 19th century in America, in the context of the Civil War disability policy scheme. The study was conducted on 17,702 Union Army (UA) Civil War veterans. Of these, 10,789 were examined and diagnosed with major MSK conditions, rheumatism, sciatica, and spinal curvature, between 1862 and 1907. Analyses examine MSK (i) prevalence rates by birth cohort and age group; (ii) fatality rates as compared with other disabilities; (iii) risk rates by occupation type; and (iv) lifespan for MSK patients. MSK conditions are commonly claimed disabilities within the Civil War data set, with prevalence rates increasing with age. Regression studies show that working in clerical and professional (relative to manual labor) occupations decreases the likelihood of being examined for and diagnosed with MSK conditions. MSK patients examined at older ages tended to have longer lifespan than those examined at younger ages. The findings suggest that changes in age, environmental, and occupational conditions during the late 19th century affected MSK condition prevalence and the average lifespan of MSK patients. Implications for contemporary disability policy are discussed. 相似文献
460.
Linking sight and sound: fMRI evidence of primary auditory cortex activation during visual word recognition 总被引:4,自引:0,他引:4
We describe two studies that used repetition priming paradigms to investigate brain activity during the reading of single words. Functional magnetic resonance images were collected during a visual lexical decision task in which nonword stimuli were manipulated with regard to phonological properties and compared to genuine English words. We observed a region in left-hemisphere primary auditory cortex linked to a repetition priming effect. The priming effect activity was observed only for stimuli that sound like known words; moreover, this region was sensitive to strategic task differences. Thus, a brain region involved in the most basic aspects of auditory processing appears to be engaged in reading even when there is no environmental oral or auditory component. 相似文献