5～8岁儿童失言探测与理解的发展特点

失言探测与理解是一种融入了人际互动,需要个体体会交往双方心理感受的高级心理理论任务.本研究采用图片-故事法探讨失言情境(他人对自我、自我对他人和他人对他人 )对5～8岁儿童失言探测与理解的影响.结果发现,7～8岁儿童基本拥有了失言探测与理解能力,6、7、8岁儿童在所有情境下失言探测和理解能力同步发展,而5岁儿童在他人对自我情境下失言探测与理解的成绩显著好于自我对他人情境下的成绩,提示失言探测与理解能力在不同阶段会表现出不同的发展特点.     

Pictorial superiority effects in oldest-old people

We examined memory for pictures and words in middle-age (45-59 years), young-old (60-74 years), old-old (75-89 years), and the oldest-old adults (90-97 years) in the Louisiana Healthy Aging Study. Stimulus items were presented and retention was tested in a blocked order where half of the participants studied 16 simple line drawings and the other half studied matching words during acquisition. Free recall and recognition followed. In the next acquisition/test block a new set of items was used where the stimulus format was changed relative to the first block. Results yielded pictorial superiority effects in both retention measures for all age groups. Follow-up analyses of clustering in free recall revealed that a greater number of categories were accessed (which reflects participants' retrieval plan) and more items were recalled per category (which reflects participants' encoding strategy) when pictures served as stimuli compared to words. Cognitive status and working memory span were correlated with picture and word recall. Regression analyses confirmed that these individual difference variables accounted for significant age-related variance in recall. These data strongly suggest that the oldest-old can utilise nonverbal memory codes to support long-term retention as effectively as do younger adults.     

4~7岁儿童绘画摹写的语义编码特点

以二维模型为主对儿童绘画编码特点及发展进程的探讨。研究对象为4—7岁儿童,按年龄分为4组,共163人。主要实验有二：一是选择同一实物的三维和二维两类模型让被试摹写;二是选择语义熟悉程度和语义多寡不同的二维模型让被试摹写。个别实验,实验顺序随机安排。研究结果表明：儿童对维度不同的模型绘画编码具有共同的特点,表现出三种编码形式：其一,将模型的各构件分离,各自独立编码;其二,依模型的典型特征编码;其三,按各模型真实形象编码。儿童对不同维度模型绘画编码发展的进程不同。对二维模型绘画编码水平和发展速度比三维模型提早1年。模型语义的多寡及熟悉程度影响儿童二维模型绘画编码。     

Driving Under the Influence (of Stress): Evidence of a Regional Increase in Impaired Driving and Traffic Fatalities After the September 11 Terrorist Attacks

ABSTRACT— Did the September 11 terrorist attacks elicit a subsequent increase in traffic fatalities? Gigerenzer (2004) argued that decreases in flying and increases in driving in the 3 months after the attacks led to 353 "surplus" traffic fatalities. We applied a more systematic analysis to the same data and found no evidence of a significant increase in miles driven or of a significant increase in traffic fatalities. However, we did find evidence for a regional effect of the attacks on driving behaviors. We hypothesized that geographic proximity to the attacks increased stress, which in turn decreased driving quality. Our analyses revealed that in the last 3 months of 2001, the Northeast exhibited a significant increase in traffic fatalities, as well as a significant increase in fatal accidents involving an alcohol- or drug-related citation. Increased stress related to physical proximity to the attacks may explain the increase in traffic fatalities.     

Distributional analyses in auditory lexical decision: Neighborhood density and word-frequency effects

In the present article, the effects of phonological neighborhood density and word frequency in spoken word recognition were examined using distributional analyses of response latencies in auditory lexical decision. A density × frequency interaction was observed in mean latencies; frequency effects were larger for low-density words than for high-density words. Distributional analyses further revealed that for low-density words, frequency effects were reflected in both distributional shifting and skewing, whereas for high-density words, frequency effects were purely mediated by distributional skewing. The results suggest that word frequency plays a role in early auditory word recognition only when there is relatively little competition between similar-sounding words, and that frequency effects in high-density words reflect postlexical checking.     

Preserved visual representations despite change blindness in infants

Combining theoretical hypotheses of infant cognition and adult perception, we present evidence that infants can maintain visual representations despite their failure to detect a change. Infants under 12 months typically fail to notice a change to an object's height in a covering event. The present experiments demonstrated that 11‐month‐old infants can nevertheless maintain a viable representation of both the pre‐ and post‐change heights despite their ‘change blindness’. These results suggest that infants, like adults, can simultaneously maintain multiple representations, even if they do not optimally use them.     

在不同注意定向条件下是否出现返回抑制的知觉优先

返回控制中的知觉优先是指相对于非线索化位置,线索化位置的刺激被优先知觉到的现象。研究采用时序判断方法对不同注意定向下返回抑制的知觉优先现象进行了两个实验。实验１采用连续线索化的安排,发现当注意从线索化位置移开后知觉优先仍然存在;实验２采用同时呈现双线索的安排发现知觉优先也存在。     

关于短时记忆中范畴群集的定位实验

本研究通过对短时记忆的编码或提取阶段进行注意分散来探讨范畴群集的定位问题。以大学生为被试,应用双作业进行分散注意条件下的记忆实验,并与集中注意条件下的记忆实验进行比较。识记材料均为双范畴词表。结果表现无论在编码还是提取阶段分散注意,都导致范畴群集程度的降低。实验结果不支持认为范畴群集的组织过程仅仅发生在记忆信息加工的某一个阶段的看法,而有利于双重定位观点,即认为范畴群集既与编码阶段有关,也与提取阶段有关。     

触摸方式与触觉长度知觉

问 题 触觉长度知觉是触觉的重要空间功能,它在大小知觉中是一个基本因素。触觉长度知觉和面积、体积知觉等一样,经常通过不同方式的触摸动作而实现,主要属于主动触觉。在现实生活中,这些常见的触摸方式有:①以手掌或手指沿着物体表面从一端摸到另一端;②用拇指和食指或中指夹住物体两侧并触摸;③将短小的物体放在手心,合拢手指加以辨别;④用手指作为尺子(指尺)来丈量,等等。这些不同的触摸方式显示出