A central circuit of the mind

The methodologies of cognitive architectures and functional magnetic resonance imaging can mutually inform each other. For example, four modules of the ACT-R (adaptive control of thought - rational) cognitive architecture have been associated with four brain regions that are active in complex tasks. Activity in a lateral inferior prefrontal region reflects retrieval of information in a declarative module; activity in a posterior parietal region reflects changes to problem representations in an imaginal module; activity in the anterior cingulate cortex reflects the updates of control information in a goal module; and activity in the caudate nucleus reflects execution of productions in a procedural module. Differential patterns of activation in such central regions can reveal the time course of different components of complex cognition.     

《管子》与《蜜蜂的寓言》消费观之比较

在人类消费文化发展史上,有两本书的消费观点格外引人注目。分别是成书于我国先秦时期的《管子》和西方18世纪荷兰经济学家曼得维尔的《蜜蜂的预言》。撇开时间和空间的诸多差异,两书的消费思想竟有惊人的相似之处：它们都在一片尚俭声中主张适度消费,发挥消费对社会生产的积极作用;反对过度节俭,认为奢靡能增加社会财富、提供就业机会;两书虽是它们所处时代论述消费问题的开天辟地之作,却并未受重视,反而对后人产生了深远影响。     

The "model minority" and their discontent: examining peer discrimination and harassment of Chinese American immigrant youth

Using an ecological framework, the authors explore the reasons for peer discrimination and harassment reported by many Chinese American youth. They draw on longitudinal data collected on 120 first- and second-generation Chinese American students from two studies conducted in Boston and New York. Our analyses suggested that reasons for these experiences of harassment lay with the beliefs about academic ability, the students' immigrant status and language barriers, within-group conflicts, and their physical appearance that made them different from other ethnic minority or majority students. Implications and future research are also discussed.     

小学一年级儿童简算策略发现的意识性研究

考察不同问题呈现方式和不同问题情境对小学一年级儿童简算策略发现的影响,及策略发现有无意识性。结果表明,问题呈现方式与问题情景对相反数策略发现影响显著,完整呈现比不完整呈现,封闭问题情景比混合问题情景更容易促使儿童发现新策略。研究证实了无意识策略的存在。通常情况下是先出现无意识策略,再出现有意识策略。但并非所有有意识策略出现之前都出现无意识策略。     

不同延迟条件下语音词的重复效应

采用连续再认范式, 考察了不同延迟条件下, 汉语口语词的重复效应。结果发现, 立即重复产生了最大的反应时的易化, 随着延迟的增加, 易化作用逐渐减小甚至消失。在ERP上, 与首次呈现相比, 重复呈现的词会诱发广泛分布的更正的波形; 并且随着延迟的增加, 重复效应出现的时间越来越晚：立即重复条件从200ms左右开始, 间隔一个词重复条件从300ms左右开始, 间隔8~10个词时, 重复效应从400ms左右开始。三种条件下的重复效应分别反映了对再次呈现的词的声学语音特征加工的易化、语义加工的易化和情景信息的提取。     

幼儿社会行为各维度的内部及相互关系的研究

本研究采用随机抽样法对12个小、中、大班共435名幼儿的社会行为各维度内部及相互关系进行了研究.结果表明,幼儿积极行为内部和消极行为内部均存在着非常显著的正相关;幼儿积极行为和消极行为间则存在着显著的负相关,但两者间的关系并非必然和绝对,幼儿积极和消极行为间存在着四种主要关系类型;在不同活动中,幼儿积极行为与消极行为间的关系不同.     

超常的声称要有超常的证据——关于就无神论教育问题与中学生的系列对话（一）

北京八中开展无神论教育课题后,中学生们提出了很多困惑与思考的问题,非常值得研究与讨论。它不仅反应了同学们日常从社会上、家庭中接收到各种有神论思想的信息而产生疑问,同时也反映出无神论教育的缺位导致他们世界观认识的不稳定性。尽管思想政治教育课在哲学、理想、道德、法律和心理上有所涉猎,但是如何建立正确的世界观,还是需要科学无神论的教育。我们将根据同学们提出的疑惑问题,与无神论专家们共同展开讨论,在思想撞击中产生新的认识火花。本期刊登有关“如何认识超自然现象问题”,今后几期还将讨论有关如何看待宗教信仰问题、如何看待迷信问题、科学家信教和名人迷信问题。希望广大读者和专家加入我们的讨论。     

国有企业与民营企业员工工作价值观的比较研究

采用修订后的工作价值观调查表对我国大陆6省市的257名国有企业员工和219名民营企业员工进行了调查。结果表明,国有企业员工的工作价值观在舒适与安全维度上显著高于民营企业员工;在能力与成长维度上显著低于民营企业员工;在地位与独立维度上二者差异不显著。     

小学生创造性科学问题提出能力的发展研究

运用实验的方法,对371名小学生创造性科学问题提出能力的发展进行了研究。结果表明:(1)小学生创造性科学问题提出能力整体呈上升趋势;(2)男女生的创造性科学问题提出能力发展趋势基本相同,男生整体上要略高于女生,差异不显著;(3)小学生创造性科学问题提出能力的学校类型差异主要表现在发展趋势上,城市小学二到三年级停滞不前,乡村小学则迅速发展,之后发展趋势相同;(4)三到四年级是小学生创造性科学问题提出能力发展的“关键期”。     

Restrictions in means for suicide: an effective tool in preventing suicide: the Danish experience

Restriction of means for suicide is an important part of suicide preventive strategies in different countries. The effect on method-specific suicide rate and overall suicide rate of restrictions on availability of carbon monoxide, barbiturates, and dextropropoxyphene was examined. From 1970 to 2000, overall suicide mortality and method-specific suicide mortality in Denmark were compared with official information about availability of barbiturates and analgesics and carbon monoxide in vehicle exhaust and household gas. Restrictions on availability of household gas with carbon monoxide content and barbiturates was associated with a decline in the number of suicides and suicides by self-poisoning with these compounds after controlling for the effect of calender year. Restricted access occurred concomittantly with a 55 percent decrease in suicide rate.