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131.
采用给数取物任务和数量比较任务,考察表面相似性与共享标签知识对96名7~16岁智障儿童数量表征的影响。研究结果表明:(1)智障儿童数量表征能力随着年龄增长而提高,11~13岁和14~16岁智障儿童完成数量比较任务的正确率显著高于7~10岁;(2)智障儿童在高表面相似物体下完成数量比较任务的正确率显著高于低表面相似物体下的正确率;(3)擅长使用数字标签的智障儿童,在数量比较任务的表现显著优于不擅长组。  相似文献   
132.
基于生态系统理论和动机-意志整合模型,采用问卷法以930名青少年(年龄=15.24±1.66岁)及其父母为研究对象,构建一个有调节的中介模型,从家长与孩子双视角分析孩子体验到的亲子关系和父母教育卷入对青少年抑郁、自伤和自杀意念的影响路径。结果显示:(1)相比低亲子关系-低教育卷入一致的个体,高亲子关系-高教育卷入的青少年有着更低水平的挫败感,且相比于低亲子关系-高教育卷入的青少年,有着高亲子关系-低教育卷入的个体表现出更低水平的挫败感;(2)挫败感在亲子关系-教育卷入与青少年抑郁、自伤和自杀意念之间起部分中介作用;(3)人生意义感调节该中介模型后半段,即挫败感对青少年抑郁、自伤和自杀意念的影响,具体表现为随着人生意义感的增加,挫败感对抑郁、自伤和自杀意念的影响逐渐减小。研究从家庭关系中家长与孩子双视角,揭示了挫败感和人生意义感的中介与调节作用,为青少年抑郁、自伤和自杀意念的发生机制提供更多解释路径。  相似文献   
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134.
    
While cognitive changes in aging and neurodegenerative disease have been widely studied, language changes in these populations are less well understood. Inflecting novel words in a language with complex inflectional paradigms provides a good opportunity to observe how language processes change in normal and abnormal aging. Studies of language acquisition suggest that children inflect novel words based on their phonological similarity to real words they already know. It is unclear whether speakers continue to use the same strategy when encountering novel words throughout the lifespan or whether adult speakers apply symbolic rules. We administered a simple speech elicitation task involving Finnish-conforming pseudo-words and real Finnish words to healthy older adults, individuals with mild cognitive impairment, and individuals with Alzheimer's disease (AD) to investigate inflectional choices in these groups and how linguistic variables and disease severity predict inflection patterns. Phonological resemblance of novel words to both a regular and an irregular inflectional type, as well as bigram frequency of the novel words, significantly influenced participants' inflectional choices for novel words among the healthy elderly group and people with AD. The results support theories of inflection by phonological analogy (single-route models) and contradict theories advocating for formal symbolic rules (dual-route models).  相似文献   
135.
    
ABSTRACT

Whether colour information contributes to the process of face recognition remains controversial. We examine this question here by evaluating the face recognition performance of individuals who are colour blind. Specifically, we compared the performance profile of colour blind and matched control individuals on a colour face recognition task where shape information was progressively degraded. The colour blind participants performed significantly more poorly than controls on this task, as revealed through multiple dependent measures. There was, however, no difference between these two groups on a standardized grayscale control task of face recognition, ruling out a generic face recognition deficit. These results both uncover a face recognition deficit in colour blind individuals and provide evidence for the contribution of colour to everyday facial recognition.  相似文献   
136.
    
The present study aims to assess how the processing of basic visual perceptual (VP) components (length, surface, orientation, and position) develops in typically developing (TD) children (n = 215, 4–14 years old) and adults (n = 20, 20–25 years old), and in children with cerebral palsy (CP) (n = 86, 5–14 years old) using the first four subtests of the Battery for the Evaluation of Visual Perceptual and Spatial processing in children. Experiment 1 showed that these four basic VP processes follow distinct developmental trajectories in typical development. Experiment 2 revealed that children with CP present global and persistent deficits for the processing of basic VP components when compared with TD children matched on chronological age and nonverbal reasoning abilities.  相似文献   
137.
    
Objective: The extent to which positive (PA) and negative (NA) affect conjointly impact well-being is not yet well understood. Additionally, research investigating the role of affectivity in maintaining well-being among ethnic and racial minorities is scant. The current research demonstrates how polynomial regression and response surface methodology (PR and RSM) may be used to better understand how PA and NA jointly influence stress and well-being.

Design: In Study 1, 291 African-American undergraduates (Mage = 22.91, SD = 6.91; 67% female) completed measures of affectivity and psychological well-being. In Study 2, a community sample of 117 African-Americans (Mage = 31.87, SD = 13.83; 69% female) completed affectivity measures and a laboratory-based social stressor task to assess links between affectivity and salivary cortisol reactivity.

Main outcome measures: Study 1 included life satisfaction, perceived stress and self-reported depressive symptoms. Study 2 included salivary cortisol reactivity.

Results: Across both studies, PA ascendency (i.e. high PA combined with low NA) was associated with better well-being, while NA ascendancy (i.e. high NA combined with low PA) was associated with poorer outcomes.

Conclusion: PR and RSM may provide new insight into the conjoint influence of PA and NA on health and well-being. We discuss potential implications for affectivity research, including race-related explorations.  相似文献   

138.
    
Two experiments examined the ability to remember the vocal tempo and pitch of different individuals, and the way this information is encoded into the cognitive system. In both studies, participants engaged in an initial familiarisation phase while attending was systematically directed towards different aspects of speakers’ voices. Afterwards, they received a tempo or pitch recognition task. Experiment 1 showed that tempo and pitch are both incidentally encoded into memory at levels comparable to intentional learning, and no performance deficit occurs with divided attending. Experiment 2 examined the ability to recognise pitch or tempo when the two dimensions co-varied and found that the presence of one influenced the other: performance was best when both dimensions were positively correlated with one another. As a set, these findings indicate that pitch and tempo are automatically processed in a holistic, integral fashion [Garner, W. R. (1974). The processing of information and structure. Potomac, MD: Erlbaum.] which has a number of cognitive implications.  相似文献   
139.
中国人眼对表色色差辨别的实验研究   总被引:13,自引:0,他引:13       下载免费PDF全文
报导了中国人眼对表色色差辨别的实验研究中彩色类特性实验结果。研究中对颜色所具有的明度、色调、彩度三个属性分别开展了实验研究。研究结果表明了颜色中的色调、明度和彩度的特性变化不影响人眼对表面色色差的识别。中国人眼对彩色系表色色差辨别时,色差识别的量值△E值仅随感觉等级的不同而产生变化。将彩色类和非彩色类的实验结果进行比较时,发现了彩色类各感觉等级的△E值均大于非彩色类的△E值。根据二个类别的实验结果,研究者提出:中国颜色体系中非彩色系样品和彩色系样品色度坐标值的色差宽容度分别为:非彩色系△E<1.5;彩色系△E<3.0的建议。根据该项技术指标制作的《中国颜色体系样册》中的1322个颜色样品,经中国计量科学研究院在国家标准计量装置上测试,将其结果和国际上已有的颜色体系样册中样品的色差比较时,还是让人感到满意的。该项技术指标已作为《中国颜色体系》国家标准中颜色样品色差宽容度的技术参数。  相似文献   
140.
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