Attractiveness as a Function of Skin Tone and Facial Features: Evidence from Categorization Studies

Participants rated the attractiveness and racial typicality of male faces varying in their facial features from Afrocentric to Eurocentric and in skin tone from dark to light in two experiments. Experiment 1 provided evidence that facial features and skin tone have an interactive effect on perceptions of attractiveness and mixed-race faces are perceived as more attractive than single-race faces. Experiment 2 further confirmed that faces with medium levels of skin tone and facial features are perceived as more attractive than faces with extreme levels of these factors. Black phenotypes (combinations of dark skin tone and Afrocentric facial features) were rated as more attractive than White phenotypes (combinations of light skin tone and Eurocentric facial features); ambiguous faces (combinations of Afrocentric and Eurocentric physiognomy) with medium levels of skin tone were rated as the most attractive in Experiment 2. Perceptions of attractiveness were relatively independent of racial categorization in both experiments.     

原发性肾病综合征合并甲状腺功能异常患者临床资料分析

分析原发性肾病综合征合并甲状腺功能异常患者的临床特征,探讨其,I盏床意义。对37例原发性肾病综合征合并甲状腺功能异常患者的,陆床资料进行回顾性分析,治疗前检测甲状腺过氧化物酶抗体（Anti～TPO）、甲状腺球蛋白抗体（Anti—TG）,并分别于治疗前后检测血清游离T3（FT3）、血清游离甲状腺激素（FT4）、促甲状腺激...     

阿尔兹海默病患者中的范畴特异性语义记忆损伤

脑损伤可导致范畴特异性语义损伤, 即某一范畴的语义记忆选择性损伤或损伤更严重。阿尔兹海默病患者中的范畴特异性语义损伤可能来自不同范畴之间在熟悉度、词频、获得年龄、视觉复杂度、语义距离、加工要求以及所涉及的主要语义特征等方面的差别。然而, 有无生命范畴本身是否也是一个来源, 尚不清楚。进一步的研究不仅需要整合范畴途径和特征途径, 并区分语义记忆的存储和通达, 而且需要考查疾病严重程度如何影响语义记忆损伤模式。     

Frequency and Category Factors in the Reduction and Assimilation of Function Words: EPG and Acoustic Measures

Many studies have observed phonetic and phonological differences between function words and content words. However, as many of the most commonly cited function words are also very high in frequency, it is unclear whether these differences are the result of syntactic category or word frequency. This study attempts to determine whether syntactically defined function words are indeed phonologically and phonetically reduced or assimilated when word frequency is balanced. Three experiments were designed to distinguish the relative contributions of the factors of category and frequency on phonetic and phonological reduction and assimilation. Overall results suggest that syntactic category and word frequency interact with phonetic and phonological processes in a more complex way than previously believed. Experiment 1 measured final t/d dropping, a reduction process, using electropalatography (EPG). Experiment 2 examined vowel reduction using acoustic measures. In Experiment 3, palatalization, an assimilation process, was examined using EPG. Results showed that t/d dropping responds to the factor of syntactic category, whereas palatalization is affected by word frequency; vowel reduction responded to both factors, with a dominant syntactic category effect and a secondary within-category frequency effect. The implications of these findings for models of lexical representation and theories of language acquisition are discussed.     

A double-dissociation in infants' representations of object arrays

Previous studies show that infants can compute either the total continuous extent (e.g. Clearfield, M.W., & Mix, K.S. (1999). Number versus contour length in infants' discrimination of small visual sets. Psychological Science, 10(5), 408-411; Feigenson, L., & Carey, S. (2003). Tracking individuals via object-files: evidence from infants' manual search. Developmental Science, 6, 568-584) or the numerosity (Feigenson, L., & Carey, S. (2003). Tracking individuals via object-files: evidence from infants' manual search. Developmental Science, 6, 568-584) of small object arrays. The present experiments asked whether infants can compute both extent and number over a given array. Experiment 1 used a habituation procedure to show that 7-month-old infants can compute numerosity when the objects in the array contrast in color, pattern, and texture. Experiment 2 revealed that, with these heterogeneous arrays, infants no longer represent the array's total continuous extent. Since previous work shows that infants compute continuous extent but not numerosity when objects have identical rather than contrasting properties, these results form a double dissociation. Infants computed number but not extent over representations of contrasting objects, and computed extent but not number over representations of identical objects.     

元音和复合声识别中噪声分离机制的实验研究

该文用配对比较方法,从夫调谐波的数量对谐波筛的影响（实验一）、失调谐波的位置（实验二）以及谐波相位与其失调幅度之间的相互作用（实验三）等三个方面对失调谐波的分离机制进行探讨。研究结果表明：（1）多个谐波同时失调时其失调效应要比单个谐波强,即谐波失调存在累积效应;（2）谐波次数不同,其失调效应也存在差异,这种差异与谐波和共振峰之间的距离有关,谐波越靠近共振峰,其失调效应越明显,但对由等振幅的谐波系列构成的复合声而言,高次谐波的失调效应比低次谐波弱;（3）谐波相位对其失调效应产生间接影响,这种影响与谐波的起始振幅有关,当相位为π／2和3π／2时,失调效应更加明显。     

刺激属性对内隐社会知觉的影响

本文通过选择不同词性（消极词、积极词和中性词）的双字词64个,主要对“刺激属性”变量进行了实验操作;采用“意识过滤”技术和速示辨认测验对内隐社会知觉的特点进行了考察;结果发现,实验材料的笔划数和被试的性别对内隐社会知觉没有影响,刺激的特性和刺激的启动作用对内除社会知觉有显著的影响;同时还证明速示辨认测验不受意识的“污染”,将速示辨认作为内臆测验的方法是比较“纯净的”。     

Attentional demands and recall of verbal and color information in action events

Two experiments addressed the influence of secondary task performance at encoding on recall of different features of subject-performed tasks (SPTs) involving objects (e.g., turn the wallet). In Experiment 1, memory for verbs and colors of objects was assessed, with object names serving as cues. In Experiment 2, object and color memory were assessed, with verbs serving as cues. Results from both experiments indicated a greater deterioration of memory performance under divided attention for verbal features than for colors. In addition, intention to remember did not affect performance for any feature in either experiment. The overall pattern of outcome is discussed relative to the view that encoding of verbal features of SPTs is more attention-demanding than encoding of physical task features, such as color.     

Knowledge and knowledge gaps in semantic memory of technical artifacts

Two hypotheses have been considered regarding the relation between knowledge and semantic knowledge gaps: a “knowledge clash” hypothesis predicting more awareness of knowledge gaps with increasing knowledge, and a “knowledge deficit” hypothesis whereby the relation is the opposite. In order to examine these hypotheses, graduate and undergraduate students were asked to state what they knew and what they did not know about a sample of familiar and unfamiliar artifacts. None of the above hypotheses accounted for the results. Instead, knowledge was found to be differently related to various types of unknown features: increasing knowledge was related to less unknown features of the artifacts' function and to more unknown features about contingency relations. Unknown features of the artifacts’ behaviors were frequently reported in the two knowledge conditions. The results suggest new strands of research on the metacognition of “not knowing.”     

学龄儿童汉语正字法意识发展的研究

该研究以小学一年级、三年级、五年级儿童及大学生为被试,让他们对左右、上下和半包围三种结构类型的９０个真字、假字和非字进行词汇判断,以探讨儿童正字法意识的发展,结构类型的相应影响,以及年龄对汉字识别中结构类型效应的作用。结果表明;（１）儿童正字法意识的形成是以识字为基础的逐步发展的过程。小学一年级儿童已萌发了正字法意识,但至五年级时才基本达到了成人水平。（２）只有小学一年级被试的真字识别受结构类型影响。汉字识别中是否存在结构类型效应可能与被试识字经验、材料熟悉性等因素有关．（３）年级内部正字法意识的萌发和年级之间正字法意识发展的差异不受结构类型的影响,但萌发之后各年级内部均是对左右结构汉字正字法意识优于上下结构和半包围结构。