阅读障碍儿童语音提取

儿童在提取短时记忆系统的语音信息时,往往会造成部分信息的丢失和回忆量的下降,这种信息丢失量的多少与中央执行系统功能有着密切的联系。为了考察阅读障碍儿童的语音提取特点,挖掘他们记忆失败的本质,使用自由回忆和再认两种任务,考察阅读障碍儿童在无意义音节和汉语词汇上的提取特点,结果发现：（1）阅读障碍儿童在语音提取时,丢失的信息率要显著多于正常儿童,这种丢失可能是由于他们落后的中央执行功能所致;（2）阅读障碍儿童单纯的语音保持能力正常,但不擅长利用语义编码来促进短时记忆效果,而正常儿童却能够较好地利用语义线索。     

The Effect of Reviewer Profile Photo on Purchase Decision: Evidence from Event-Related Potentials

Although the number of studies on online reviews is growing, the impact of reviewer photo on consumer purchase decision-making has not yet been examined systematically. In particular, the underlying neural mechanisms have remained underexplored. Thus, the present study investigated whether and how reviewer photos affects consumers to make a purchase decision by using eventrelated potentials (ERPs). At the behavioral level, participants demonstrated a higher purchase rate with a shorter RT in situations with reviewer photos compared to situations without reviewer photos. Meanwhile, at the neural level, compared with situations without reviewer photos, situations with reviewer photos attracted more rapid attention resources at the early automatic processing phase, which induced a greater P2 amplitude, then mobilized more sustained attention allocation at the cognitive monitoring phase due to its evolutionary significance which elicited a more negative N2 amplitude, and finally resulted in a better evaluative categorization with higher motivational and emotional arousal due to its social presence which evoked a larger late positive potential (LPP) amplitude at the late elaborate cognitive processing phase. Those results illuminated the neural pathway of purchase decision-making when consumers were exposed in different conditions of reviewer photo. Moreover, the current study provided evidence for the underlying influence of reviewer photo on purchase decision-making in online shopping.     

Parametrically Dissociating Speech and Nonspeech Perception in the Brain Using fMRI

Candidate brain regions constituting a neural network for preattentive phonetic perception were identified with fMRI and multivariate multiple regression of imaging data. Stimuli contrasted along speech/nonspeech, acoustic, or phonetic complexity (three levels each) and natural/synthetic dimensions. Seven distributed brain regions' activity correlated with speech and speech complexity dimensions, including five left-sided foci [posterior superior temporal gyrus (STG), angular gyrus, ventral occipitotemporal cortex, inferior/posterior supramarginal gyrus, and middle frontal gyrus (MFG)] and two right-sided foci (posterior STG and anterior insula). Only the left MFG discriminated natural and synthetic speech. The data also supported a parallel rather than serial model of auditory speech and nonspeech perception.     

发展性计算障碍儿童的数认知

发展性计算障碍作为一种特异性学习障碍,影响儿童的数学成就与数学学习观念,因而引起了多学科研究的关注和重视。文章分析了发展性计算障碍领域在数认知方面的已有研究,揭示了发展性计算障碍的数认知缺陷及内部差异,从一般认知加工障碍与数字加工模块障碍两个角度阐述了发展性计算障碍的可能成因,最后对当前研究进行了小结与展望,认为数认知缺陷的复杂关系、亚类型特征、成因之间的相互作用与机制还需进一步研究     

印象整饰对强迫服从后态度改变的影响

以194名大学生为被试,采用实验室实验法和利克特型态度量表,对Festinger和Carlsmith“强迫服从的认知性后果”实验进行了验证研究,并对个体印象整饰水平—自我监控力的差异对强迫服从后的态度中庸现象的影响作用进行了实验研究。结果表明：（1）自我监控性高低极端组在强迫服从后的态度得分不支持Festinger等实验的结果;（2）个体的印象整饰水平的差异对强迫服从中出现的态度中庸现象有显著影响作用。仅从个体内在的心理因素来解释复杂的社会行为是不够的,我们既要考虑个体自身的因素也要考虑外在环境的作用     

西北农村地区母亲抑郁与幼儿社交退缩:母亲回应性的中介作用

以甘肃省陇南市成县6所幼儿园301名农村幼儿及其母亲为研究对象,采用流调中心抑郁量表（CES-D）、母亲教养方式量表和Achenbach儿童行为量表（CBCL）分别考察母亲抑郁、母亲回应性和幼儿社交退缩的现状及相互关系。主要结果如下：（1）西北农村地区母亲抑郁发生率较高,父亲外出打工和贫困家庭的母亲抑郁发生率更高;（2）母亲抑郁与幼儿社交退缩行为显著正相关,母亲抑郁水平越高,幼儿社交退缩得分越高;（3）母亲敏感性和反应性与幼儿社交退缩显著负相关,母亲敏感性和反应性得分越高,幼儿社交退缩得分越低;（4）母亲反应性在母亲抑郁和幼儿社交退缩之间起部分中介作用。     

儿童运用归纳法概括句组内词语能力的实验研究

本研究的目的是探讨儿童概括词语能力的发展问题。实验材料是9组分别有一、二或三个词语(“因素”)的句子,要求被试概括这些句组。被试是9至12岁以及8.5岁的小学生,每个年龄组有30人,共计150名小学生。 实验结果表明:儿童概括词语能力的发展并不与年龄的增长完全一致,在速度和等级方面其发展是不同的。在8.5-9岁以及11-12岁两个年龄组间差异是显著的,而在其他的年龄组,这种能力的发展是缓慢的。每个年龄组概括的广度也是不同的。     

Matrix derivatives and its applications in statistics

The scalar values of differentials rather than symbolic derivatives are treated here. This approach simplifies the differential calculus in statistics because, often, the linear representations of differentials in statistics (1) are complicated, (2) depend on the bases used, (3) can be obtained by the scalar values on elements of a given basis, and (4) are not necessary for many problems of finding maxima and minima. Among others, a product rule is obtained in a very general and simple form. The results are applied to certain problems in multivariate statistical analysis that are useful to psychology and other behavioral sciences.     

关于健康社会性格的跨文化研究

社会性格作为国民素质的重要组成,其健康程度将直接影响精神文明建设的成效。本研究发现,当代人健康社会性格体系由五个因素构成,分别是：进取心、道德感、安定感、领导性与家庭性,为进一步深入探究,本研究采用跨文化方式,将日韩、欧美的参照样本与当代中国人进行比较研究,发现性别与国别因素对于五个因素中的若干项具有显著性影响,体现出跨文化差异性。本研究对于成功塑造跨世纪中国人健康社会性格将具有积极的理论与实践意义。