初中生成就目标定向、学习策略与学业成绩之间的关系研究

以432名初中学生为被试,通过问卷调查,考察初中生成就目标定向、学习策略与学业成绩之间的关系。结果表明：成就目标定向、学习策略对学业成绩均存在显著的总体影响,其中学习策略对学业成绩产生显著的直接影响,并且主要是通过认知策略和动机策略来产生;成就目标定向对学业成绩不存在显著的直接影响,但通过学习策略这个中介变量产生显著的间接影响。成就目标定向主要是通过元认知策略对学习策略产生显著的直接影响。     

Biphasic ERK1/2 activation in both the hippocampus and amygdala may reveal a system consolidation of contextual fear memory

There is accumulating evidences to suggest that memory consolidation in some conditions involves two waves of neuronal plastic change. Using two fear conditioning procedures in male C57BL/6J mice, we have recently shown that consolidation of the foreground contextual fear memory required two waves of ERK1/2 activation in hippocampal CA1, while consolidation of cue conditioning was only associated with the early phase of activation. The present experiment further showed that this bi-phasic pattern of ERK1/2 activation was not restricted to hippocampal CA1, but could also be observed in other fear memory-related brain areas. The unpaired conditioning procedure (context in foreground) induced two waves of ERK1/2 activation in hippocampal CA1 and CA3, as well as in the LA and BLA nuclei of the amygdala. In contrast, the paired conditioning procedure (context in background) led to a transient early phase only in hippocampal CA1 and LA. In addition, ERK1/2 phosphorylation in the hippocampus was found to correlate with that in the amygdala nuclei specifically after the unpaired procedure. Taken together, our data suggest that the observed biphasic pattern of neuronal plastic events may reflect the interplay between hippocampal and amygdala activity-dependent plasticity critical for the system consolidation of contextual fear memory.     

无关声音效应研究述评

无关声音效应是在对注意与记忆进行研究时所发现的一个现象,有益于探讨噪音等无关声音刺激对个体认知过程、工作绩效及身心健康的影响作用。在简要回顾ISE现象的界定与理论解释争论的基础上,重点从对刺激强度不同的ISE现象之理论分析、应用价值及一些相关的近期研究方面作了介绍,从对ISE现象的理论解释、无关声音刺激的选取、研究方法的综合使用、ISE现象中的个体差异等方面做了展望。     

工作记忆中的词长效应

工作记忆中的词长效应是指在即时序列回忆中短单词列的成绩优于长单词列的现象。该文首先回顾与词长效应有关的实验研究及阐述对应的理论解释,包括经典的语音回路理论和新近提出的特征模型、整合理论、项目位置权衡理论和SIMPLE理论等,然后介绍在这一方面运用脑成像技术研究的进展,如ERP,PET和fMRI方面的研究,为词长效应理论解释提供了进一步的证据,接着讨论词长效应研究中存在的争议,最后简评各主要理论并展望了今后研究的趋势     

The perseverance effect in the debriefing paradigm: Replication and extension

A classic study conducted by Ross, Lepper, and Hubbard (1975) revealed a perseverance effect wherein people who received positive performance feedback on an alleged social perceptiveness test reported more favorable self-perceptions in this domain than those who received negative feedback despite the fact that they had received standard outcome debriefing (i.e., been informed about the false, predetermined, and random nature of the feedback) prior to reporting self-assessments. The present studies extend this past research by revealing that (a) there is a form of outcome debriefing (i.e., informing participants about the bogus nature of the test as well as the bogus nature of the feedback) that effectively eliminates the perseverance effect, (b) the perseverance effect that occurs after standard outcome debriefing is limited to perceptions of specific task-relevant skills rather than more global abilities, and (c) affective reactions do not underlie the perseverance effect that occurs in the false feedback paradigm.     

The development of memory for own- and other-race faces

This study demonstrates that experience and development interact to influence the "cross-race effect." In a multination study (n=245), Caucasian children and adults of European ancestry living in the United States, Norway, or South Africa, as well as biracial (Caucasian-African American) children and adults living in the United States, were tested for recognition of Asian, African, and Caucasian faces. Regardless of national or biracial background, 8- to 10-year-olds, 12- to 14-year-olds, and adults recognized own-race faces more accurately than other-race faces, and did so to a similar extent, whereas 5- to 7-year-olds recognized all face types equally well. This same developmental pattern emerged for biracial children and adults. Thus, early meaningful exposure did not substantially alter the developmental trajectory. During young childhood, developmental influences on face processing operate on a system sufficiently plastic to preclude, under certain conditions, the cross-race effect.     

12-20岁个体前瞻记忆的发展与影响因素的研究

以334名12～20岁个体为被试,采用两因素混合设计,探讨这一年龄阶段个体前瞻记忆的发展及影响因素。结果发现,被试前瞻记忆水平随年龄增长而提高,且在14～16岁发展最快;提高基于时间的前瞻记忆负载,会使前瞻记忆成绩降低;前瞻记忆与当前任务的完成呈负相关。表明前瞻记忆是一种策略加工过程。     

再探框架对风险决策行为的影响

期望理论运用Ｓ状的价值函数和非线性的权重函数来解释和预测框架效应。“齐当别”抉择模型将不同框架下的抉择行为简单地看成是“最好可能结果之间的取舍”或者“最坏可能结果之间的取舍”。本研究设计了一“匹配”技术,并用此对作者所报告过的支持框架效应与不支持框架效应的选择问题加以再检验。实验表明,采用不同的框架并不能预测性地决定不同的抉择偏爱,而匹配结果所示的“齐当别”策略则能更好地对所收集到的有关框架效应的数据作出解释。     

童年中期同伴关系与孤独感的中介变量检验

以571名小学三、四、五、六年级的儿童为被试,考察了儿童社会喜好、友谊质量、社交自我知觉与孤独感的关系,检验了社交自我知觉在同伴关系变量与孤独感间的中介作用。结果表明,社会喜好、友谊质量、社交自我知觉和孤独感间相关显著,并且存在显著的性别差异;社交自我知觉在同伴关系变量与孤独感间存在中介的作用;独立的中介效应检验中,社会喜好、友谊质量均通过社交自我知觉的中介作用与孤独感发生联系,同时,也存在直接的联系;综合模型中,社会喜好只通过社交自我知觉的中介作用与孤独感产生联系,不存在直接效应,而友谊质量与孤独感既存在中介的联系,同时也存在直接联系。     

图形和汉字视觉认知任务中的部分线索效应

给被试呈现一幅图的不完整信息作为线索会干扰被试对图形的辨认,这是一种部分线索效应。实验一的任务是对模糊图形的辨认,在轮廓相似组图形中,部分线索的干扰作用随呈现模糊级次数的增加而更加显著,但在轮廓非相似组图形中,模糊级呈现次数为２次和３次的情况下,也表现出了显著的部分线索效应。实验二在不完整汉字识别任务中进一步考察了部分线索效应,在事先学习的条件下,形状相似字组汉字的辨认表现出了显著的部分线索效应,而意义相似字组和随机字组汉字的辨认表现出了部分线索的促进作用。在事先不学习的条件下,随机字组和形状相似字组汉字的辨认表现出了显著的部分线索效应,而意义相似字组汉字的辨认没有表现出显著的部分线索效应。本研究用激活的观点对这些结果做出了合理的解释。