大脑机能一侧化和表意文字符号的认读

本实验在速示条件下探讨认读作为表意文字符号的汉字和阿拉伯数字时,视野(大脑半球)一侧化问题。实验结果表明,单个阿拉伯数字不表现出大脑一侧化;单侧视野呈现汉字或双字词以及双侧视野同时分别是现汉字和阿拉伯数字时,表现出右视野(左半球)认读的正确率显著的高;在双侧同时分别呈现双字词和数字以及中央视野与单侧视野同时呈现汉字时,左右视野差别虽不显著,但仍表明左半球在汉字、词的认读中起主要作用。     

彩色片常见物体记忆色及宽容度的研究

前言 在室外的景物中,最常见的颜色是人类肤色、树叶、绿草、蓝天和土这几种颜色,人们对这些常见色的评价往往是依据他们的记忆或印象去衡量的。当被还原的颜色与人们记忆中的相匹配时,人们才感到满意,因此,所谓记忆色也往往就是优选色或喜爱色。伊斯     

STM capacity for Chinese and English language materials

This paper delineates the theoretical implications of a program of research on short-term memory using Chinese characters as stimuli, and compares the findings with studies of short-term memory that use English language materials. The 14 experiments on which it is principally based, carried out in the People’s Republic of China and in the U.S.A., are reported in detail in Yu et al. (1984), W. Zhanget al. (1984), and G. Zhang and Simon (this issue). One major theoretical product of this research is an experimentally tested model that reconciles the chunking theory of STM capacity with the articulatory loop theory of Baddeley, making good quantitative predictions of capacity compatible with both. Another result, obtained by using homophones as stimuli, is a demonstration that STM is mainly acoustically encoded, but that there are an additional two or three chunks of visually or semantically encoded short-term memory available. Chunks are shown to play the same role in immediate recall and rote learning in both the Chinese language and English language stimuli; and STM capacity, measured in chunks, is essentially the same for materials in both languages.     

北京地区儿童内外倾向人格特征的研究

本研究使用艾森克人格问卷(少年),测试在校儿童370人,发现:男孩的外倾性和倔强性高于女孩,而女孩的情绪性和掩饰高于男孩;儿童的情绪性、外倾性和倔强性都有随年龄而增加的趋势,自身隐蔽和掩饰则随年龄减少;从量表统一关系分析:精神质低的儿童较多,精神质和神经质都低的也多;与前人文献相比,现在男孩的冒险性和女孩的社会活跃性较为明显。     

Dorsomedial prefrontal cortex 5-HT6 receptors regulate anxiety-like behavior

The dorsomedial prefrontal cortex (dmPFC) plays a very important role in decision-related and anxiety-related information processing. It has enriched 5-HT6 receptors; however, the precise role of dmPFC 5-HT6 receptors in anxiety remains to be fully investigated. In this study, we injected dmPFC with the 5-HT6 receptor agonist EMD 386088 and antagonist SB 271046 using stereotactic technology. 5-HT6 receptor activation in mice increased time spent in the center area on the open-field test, increased exploration of the open arms on the elevated plus maze test, and increased ratio on the social interaction test. 5-HT6 receptor inactivation induced the opposite effects. In brain slices, EMD 386088 decreased both spontaneous inhibitory postsynaptic currents (sIPSC) and spontaneous excitatory postsynaptic currents (sEPSC), while SB 271046 only increased sEPSC. These effects of EMD 386088 and SB 271046 could be reversed by the GABA_A receptor antagonist bicuculline (BMI) and positive allosteric modulator clonazepam (CLZ), respectively. Our results suggest that neurotransmission in the dmPFC by 5-HT6 receptor activation and inhibition may play an important role in anxiety-like behavior, and may provide new insight into the pathological mechanism and potential target of anxiety disorders.     

社会支持与城市移民子女生活满意度：学校适应的中介作用

该研究以城市移民子女作为研究对象,主要探讨社会支持对城市移民子女生活满意度的影响及预测作用,以及学校适应在社会支持与生活满意度之间的作用机制。研究结果表明：1）社会支持、学校适应与城市移民子女的生活满意度均呈显著相关,社会支持对城市移民子女生活满意度具有显著的正向预测作用。2）学校适应在社会支持影响城市移民子女生活满意度中起部分中介作用,即社会支持可以直接影响生活满意度,也可以通过学校适应间接影响生活满意度。但社会支持对生活满意度的直接影响是最主要的影响路径。．     

Gami-Chunghyuldan ameliorates memory impairment and neurodegeneration induced by intrahippocampal Aβ 1-42 oligomer injection

Soluble oligomeric forms of amyloid beta (AβO) are regarded as a main cause of synaptic and cognitive dysfunction in Alzheimer’s disease (AD) and have been a primary target in the development of drug treatments for AD. The present study utilized a mouse model of AD induced by intrahippocampal injection of AβO (10 μM) to investigate the effects of Gami-Chunghyuldan (GCD), a standardized multi-herbal medicinal formula, on the presentation of memory deficits and neurohistological pathogenesis. GCD (10 and 50 mg/kg/day, 5 days, p.o.) improved AβO-induced memory impairment as well as reduced neuronal cell death, astrogliosis, and microgliosis in the hippocampus. In addition, GCD prevented AβO-triggered synaptic disruption and cholinergic fiber loss. These results suggest that GCD may be useful in the prevention and treatment of AD.     

3-9年级儿童能力观干预比较研究

摘要：Dweck研究提出,通过蕴含特定能力观的故事和表扬可以形成儿童相应的能力和目标取向。作者认为,随着儿童能力的自我意识发展,干预会产生不同的效果。本研究以3-9年级885名学生为被试,采取“天分”、“努力”、“无关”三组故事和“聪明”、“努力”、“潜能”、“不表扬”四种评价方式进行能力观干预,将目标得分变化作为干预效果的指标。实验结果显示了年龄和干预方式的交互作用效应,在一定程度上支持了Dweck的研究结论,验证并丰富了作者关于能力观干预发展性效应的设想。