Conscious and unconscious forms of memory in different implicit tests

This study investigated how shallow processing (complexity rating), deep processing (pleasantness rating), and semantic generation (translating from English) of Chinese words affects conscious memory (CM) and unconscious memory (UM) of the words with three implicit tests: word association, word identification, and word-stem completion. A metacognition-based dissociation procedure was used to estimate the two forms of memory for each test. Except for the shallow condition preceding the word-association test, all three study conditions produced a positive effect on the estimate of CM. The estimate of UM did not benefit from any of the study conditions in the word-association test, it benefited from the shallow and deep conditions but did not benefit from the generation condition in the stem-completion test, and it benefited from the shallow condition but did not benefit from the deep and generation conditions in the word-identification test. Implications of these results for CM and UM operations are discussed.     

限制性饮食者对食物线索的认知偏向：行为和脑机制的证据

限制饮食是为了控制体重, 长期严格地控制进食的倾向。大量研究表明相对于非限制性饮食者, 限制性饮食者对食物线索尤其是高能量或高美味食物线索存在认知偏向。这种偏向是基于一定的脑神经基础的如前额叶背内侧, 小脑等区域。未来研究应设置严格的筛选标准, 运用视觉odd-one-out和学习-再认实验范式, 重视认知神经机制的探讨, 开展中国限制性饮食者对食物线索加工的认知机制和主要影响因素模型的系统研究。     

中国城市农民工子女心理健康研究述评

城市农民工子女是指户籍身份还是农民, 有承包土地, 但主要从事非农产业、以工资为主要收入来源的进城务工人员的子女, 他们一般为6~18周岁的适龄上学儿童少年。中国城市农民工子女心理健康的总体水平低于城市当地儿童, 社会认知方面存在着一定的歧视知觉、相对剥夺感和身份认同危机, 情绪情感方面表现为情绪不平衡、孤独(抑郁)倾向较强和自卑(自责)心理严重, 社会适应方面显示出社会适应不良、人际关系紧张与敏感、学习适应性较差和问题行为较多。性别、年龄、人格、应对方式、生活满意度等个体因素以及家庭、学校、社会等环境因素是其心理健康水平的主要影响因素。而关于城市农民工子女的教育干预还没有形成系统, 主要是一些质性的研究。今后研究的重点应包括研究对象与内容的拓宽、研究方法的改进与完善及系统研究和理论建构的加强等。     

Who shapes the self of independents and interdependents? Explicit and implicit measures of the self's relatedness to family,friends and partner

We suggest that social relationships shape the self in different ways, depending on whether persons define themselves as independent or interdependent. While the self of independents is most strongly associated with mental representations of others to whom they are related because of their own deliberate action (e.g. friends), the self of interdependents is most strongly connected with representations of others with whom they share allocated group memberships (e.g. family members). We took both explicit (Study 1) and implicit measures (Studies 2, 3 and 4) on how strongly independent and interdependent selves are associated with self‐chosen versus allocated close others. In Studies 3 and 4, we additionally primed the independent or interdependent self. Both explicit and implicit measures indicated that mental representations of family members were more strongly associated with the interdependent self than with the independent self, while romantic partners and friends were connected with both the independent and interdependent self. Copyright © 2006 John Wiley & Sons, Ltd.     

Implicit Cognition and Addiction

ABSTRACT— Extensive recent research has begun to unravel the more implicit or automatic cognitive mechanisms in addiction. This effort has increased our understanding of some of the perplexing characteristics of addictive behaviors. The problem, often, is not that substance abusers do not understand that the disadvantages of continued use outweigh the advantages; rather, they have difficulty resisting their automatically triggered impulses to use their substance of abuse. Existing interventions may help to moderate these impulses. In addition, new techniques aimed at directly modifying implicit cognitive processes in substance abuse are being developed.     

精子介导转基因技术的进展与争论

随着生物医学的不断发展,精子介导转基因技术正成为有希望的转基因方法。与其他基因转移方法相比,精子介导具有简单、高效、低廉、安全的特点。我们探讨精子结合外源DNA和DNA内化的分子模型,介绍精子介导转基因技术的改进方法,并指出存在的问题和伦理学争论,旨在推动该技术在生物技术领域的进一步发展。     

关于恶性肿瘤发病年轻化的思考

恶性肿瘤的发病多在50岁以后,以中老年人常见。近年发现青年(≤40岁)患癌有增高趋势。从恶性肿瘤的高危因素及分子机制方面,探讨恶性肿瘤发病年轻化的可能原因。辩证地剖析机体内部和外界环境之间的关系,是研究恶性肿瘤发病年轻化的重要环节。     

从能量观疾病

能量在机体的各种离子、分子、细胞、器官、组织、系统间协调分布,共同维持着健康状态。某一病因作用于人体后,“协调分布”会被不同程度地打破,当超过一定的阈值,就会产生疾病。对于人体,各种能量的直接表现形式和能量的携带者——各种营养物质,都与疾病之间有着千丝万缕的联系。从“能量”角度,我们既可进一步探讨尚未阐述清楚的疾病发生机制,又可以设计更为完美的治疗方案与医学仪器。     

胃肠道干细胞

胃肠道是人体内各系统细胞更新频率最高的器官,其干细胞的增生分化也很旺盛。尽管胃肠道干细胞本身未分化成熟,其细胞表型无法确认而不利于鉴别,但随着一些干细胞标志物的发现及对细胞信号传导通路的不断了解,我们对胃肠道干细胞的调控机制的认识正在不断加深。胃肠道干细胞的基本特征:(1)胃肠道干细胞的数量、定位和组织起源;(2)胃肠道干细胞的主要功能,包括分化转化成胃肠道各成熟的细胞系及维持组织的动态平衡和稳定;(3)从其他组织的干细胞获得胃肠组织细胞系用以胃肠道疾病的治疗;(4)胃肠道组织癌变的基因变化及形态学观察。     

自尊结构的压力调节作用研究

内隐自尊和外显自尊是自尊的两种不同元素,自尊结构指的是外显自尊和内隐自尊在个体身上的不同结合形式。本研究探讨了自尊结构对个体压力的调节作用。研究发现:个体的高内隐自尊/外显自尊结构表现出对压力性生活事件的调节作用,高外显自尊/低内隐自尊、低外显自尊/高内隐自尊、低外显/内隐自尊个体没有表现出压力的调节效应。研究最后探讨了自尊结构研究的可能发展方向。