Differential cerebral involvement in the cognitive functioning of bilinguals

The cognitive processing strategies of two groups of French-English bilinguals were studied by means of an auditory Stroop test designed to evaluate cerebral hemispheric involvement. An “early bilingual” group were bilingual before the age of 5, and a “late bilingual” group were bilingual after the age of 10. Stimuli were words uttered in pitches that were related to word meanings either congruently (as in the word “high” uttered in a high pitch) or incongruently (the word “haute” uttered in a low pitch). In one condition, subjects were to differentiate low from high pitches, disregarding meaning, while in a second condition, they were to disregard pitch and respond to word meanings. Measures of field independence were also taken. Results of data analyses suggest that male early bilinguals—the most field independent subgroup—process meaning efficiently in both cerebral hemispheres, but process pitch better in the right hemisphere. However, male late bilinguals and female bilinguals, both early and late, process meaning more rapidly in the right cerebral hemisphere and pitch equally rapidly in both hemispheres. The findings are interpreted as reflecting hemisphere-based strategy and sex differences in information-processing by the two bilingual groups.     

Spatial visualization and sex differences in quantitative ability

The hypothesis that sex differences in spatial visualization ability might account for sex differences in mathematical ability was supported for a group of 183 male and 81 female college students. With spatial visualization statistically controlled, no significant sex differences in Quantitative Scholastic Aptitude Test (QSAT) scores was found; including sex as a predictor variable increased the variance explained by less than 1%. Although the slope of the regression of mathematics on spatial visualization did not differ as a function of sex, males were somewhat more predictable than females. As the OSAT of both males and females high on spatial visualization was more predictable than the QSAT of those scoring less well, it appears that the sex difference in predictability is due to males having higher spatial ability than females.     

The skillful means and meanings of philosophy: Attention and immersion in the philosophical art of writing

This response to Richard Shusterman's Philosophy and the Art of Writing focuses on his concern that philosophy is, first and foremost, a way of life, illustrated in the West by the Socratic ideal of the philosopher and in the East by the example of the scholar-artist-gentleman. This paper examines the process of Buddhist meditation and the process of creating novels, supplementing the authors Shusterman carefully examines with examples from Black American literature, the author's own teacher John Gardner, and artistic colleagues the author has known. The basic thrust of the response is that the skillful means used in writing can indeed be a form of self-creation, but it can also be a means of liberation from the self.     

流行性感冒近期会大流行吗?

流行性感冒是为数不多的可能造成世界大流行的急性传染病之一。大流行的基础是人与动物的流感病毒相互接触与不断变异,在复制过程中基因重组而产生新的亚型,并侵袭对新亚型毫无抵抗力的人群,迅速蔓延而成大流行。大流行的结果是人群的高发病率与高致死率,对人类生命财产和社会经济发展带来灾难性打击。目前,H5N1亚型可能巳经具备了从禽鸟直接向人类传播的能力,流感大流行已向我们走来。面对威胁只有加强监测,力争在大流行来到之前,采取有科学依据的综合性措施,随时应对疫情先兆,方有可能遏制流行势头。     

The Christified Universe and the Vanquished Creatures: The Perspectives of Ilia Delio and Elizabeth A. Johnson

This article is a study of Christology in which Christ, the center of cosmos, is on the side of creatures in pain. I examine the argument of Jesuit paleontologist and mystic Teilhard de Chardin that the whole universe is in the process of Christification. With Ilia Delio and Elizabeth A. Johnson, I contend that Christ takes the side of suffering creatures going extinct just like Christ opts for the people on the margins of power. First, I sketch a background in which natural evil must be placed within an evolutionary framework. Second, in highlighting Delio's and Johnson's views, I ask, where is Christ in evolution? Finally, I revisit christological notions implied in Colossians 1 and John 1.     

婴儿指示性手势与其语言学习的关系

指示性手势是指明空间中某个物体、处所或事件的手部动作,在婴儿1岁时出现,与婴儿的语言学习存在着较强的相关,然而目前尚不清楚为什么会存在此相关。可能存在两种内在机制:(1)指示性手势影响婴儿的学习环境——引发了适时的语言输入;(2)影响学习者本身——帮助婴儿创造有效的学习状态并示意给他人。未来的研究需要探讨这两种机制如何交互作用,以及如何将指示性手势作为诊断或干预工具,用于识别和帮助有语言障碍风险的个体。     

Fitting Attitude Analyses of Value and the Partiality Challenge

According to ‘Fitting Attitude’ (FA) analyses of value, for an object to be valuable is for that object to have properties—other than its being valuable—that make it a fitting object of certain responses. In short, if an object is positively valuable it is fitting to favour it; if an object is negatively valuable it is fitting to disfavour it. There are several variants of FA analyses. Some hold that for an object to be valuable is for it to be such that it ought to be favoured; others hold that value is analyzable in terms of reasons or requirements to favour. All these variants of the FA analysis are subject to a partiality challenge: there are circumstances in which some agents have reasons to favour or disfavour some object—due to the personal relations in which they stand to the object—without this having any bearing on the value of the object. A. C. Ewing was one of the first philosophers to draw attention to the partiality challenge for FA analyses. In this paper I explain the challenge and consider Ewing's responses, one of which is preferable to the other, but none of which is entirely satisfactory. I go on to develop an alternative Brentano-inspired response that Ewing could have offered and that may well be preferable to the responses Ewing actually did offer.

围生期双酚A暴露对不同性别子代小鼠行为的影响

探讨围生期母体双酚A(bisphenol A, BPA)暴露对幼年期(生后21~30天, postnatal day 21~30, PND 21~30)和青年期(生后56~63天, PND 56~63)不同性别子代小鼠行为的影响。母鼠从妊娠第7天至断乳前(产后21天)进行BPA(0.05、0.5、5、50 mg/kg/day)灌胃染毒, 同时设对照组。每个剂量组分别在PND 21和PND 56开始测试雌雄子代小鼠各项行为。以旷场行为检测小鼠的自发活动及探究行为, 以高架十字迷宫检测小鼠的焦虑行为, 以水迷宫检测小鼠的空间学习记忆能力, 以跳台检测小鼠的被动回避记忆行为。结果表明, BPA使PND 21雌雄子鼠和PND 56雄性子鼠自发活动减少(p<0.05或p<0.01), 理毛和站立行为发生性别分化(p<0.05或p<0.01); PND 21子鼠的3分钟跑动格数有明显的剂量效应关系, 其中5~50 mg/kg/day组特别显著。BPA显著增加PND 21雌雄子鼠和PND56雌性子鼠在高架十字迷宫中进入开放臂次数和停留时间(p<0.05或p<0.01)并减少封闭臂的进入时间, 但没有明显的剂量效应关系; BPA减少PND 56雄性子鼠开放臂的进入并增加其封闭臂的进入, 干扰了幼年期和青年期小鼠焦虑行为的性别分化。BPA剂量依赖性地延长PND 21和PND 56雄性子鼠在水迷宫搜索平台的平均距离, 其中5~50 mg/kg/day剂量组具有差异显著性(p<0.05或p<0.01), 但对雌性子鼠空间学习记忆行为没有影响。此外, 5~50 mg/kg/day BPA增加PND 21雄性子鼠在跳台实验中的错误次数并缩短其跳下平台潜伏期, PND 56雌雄子鼠的被动回避记忆仅被50 mg/kg/day BPA减弱。以上结果提示, 围生期BPA暴露可影响子代小鼠幼年期和青年期的多种行为及行为的性别差异, 不同行为对BPA的敏感程度不同, 其中以自发活动和探究行为最敏感。