“非典”流行期大学生面对非典的压力源和压力研究

该研究旨在探索非典流行期大学生面对非典的压力源和压力状况,用“大学生非典压力状况调查表”和“大学生非典压力源调查表”测查了723名大学生。结果表明:(1)大学生的非典压力源来自3个方面,它们是非典疾病压力源、非典信息压力源和应对非典措施压力源。(2)非典流行期大学生对非典的恐慌程度、所感受到的非典压力强度以及非典压力对其造成的影响程度均处于中等水平。     

知觉组织影响时序知觉的认知机制:ERP研究的证据

以往研究显示,知觉组织影响时序知觉,采用ERP技术拟探讨知觉组织影响时序知觉的认知机制。采集23名被试完成同时判断任务的脑电数据。行为结果发现,知觉组织影响时序知觉,具体表现为知觉组织条件的同时判断频率显著高于非知觉组织条件。ERPs结果发现,在P1和P2成分上,知觉组织条件与非知觉组织条件引发的波幅没有显著差异; 而在N1成分上,知觉组织条件诱发的N1波幅显著大于非知觉组织条件。这表明,知觉组织对时序知觉的影响可能发生在视觉刺激加工的早期阶段,视觉刺激的知觉组织先于时序信息加工。     

知觉组织对时序知觉的双重影响:同时判断任务的证据

本研究探讨知觉组织对时序知觉的双重影响。实验采用三条线段构成的C形为实验材料,操纵图形朝向和SOA水平(实验1和实验2)、图形颜色(实验3)以及反应限制(实验4),要求被试完成同时判断任务。结果发现,在不同的SOA条件下,图形对向条件的同时判断频率均显著高于图形反向条件(实验1),即使在知觉组织线索弱化时这种现象仍然存在(实验2和实验3),而且知觉组织对时序知觉的影响不是由于被试的反应偏向导致的(实验4)。结果说明知觉组织对时序知觉存在双重影响:当两个刺激同时出现时,知觉组织能够提高时序知觉表现; 而当两个刺激非同时出现时,知觉组织显著降低时序知觉表现。     

Kainic acid lesions disrupt fear-mediated memory processing

Previous research has shown that hippocampal lesions impair the expression of fear conditioning. This fear conditioning deficit may be due to memory impairment or a reduction in fear in lesioned animals. To address these possibilities, the authors examined unconditioned and conditioned fear in male Sprague-Dawley rats that had received intracerebroventricular (ICV) infusions of kainic acid (KA) 30 days prior to testing. Animals that had received bilateral ICV infusions of KA (1.0 microl of 0.8 mg/ml solution per side) exhibited cell loss that was primarily confined to the CA3 region of the dorsal hippocampus. Kainic acid lesions impaired contextual and cued fear conditioning but did not affect unconditioned fear in a light:dark test of anxiety. Moreover, animals with KA lesions did not habituate to the light:dark apparatus when tested over a 3-day period. These data suggest that decreases in fear conditioning produced by hippocampal lesions reflect a memory deficit and not a lack of fear.     

Behavioral and cognitive correlates of exercise self-schemata

The purpose of this study was to examine the relationship of exercise self-schemata to both cognitive and behavioral concomitants including exercise self-efficacy, attitudes toward fitness, self-perceptions of fitness, and self-report of exercise behavior. Participants were 161 undergraduate students who subsequently were categorized into groups defined by the authors as "exercise schematics," "nonexercise schematics," "aschematics," and unclassified. Results indicated that exercise schematics reported greater total caloric expenditure, higher frequency of exercise behavior in the past as well as future expectations to exercise, greater self-perceptions of physical fitness, and more favorable attitudes toward fitness than either nonexercise schematics or aschematics. Furthermore, exercise schematics expressed higher levels of exercise self-efficacy than did nonexercise schematics. The results clearly support earlier findings concerning exercise self-schemata and exercise behavior and further indicate that schematics also differ from others in important cognitive-motivational determinants of exercise such as self-efficacy and perceptions of physical fitness. Future research should define the role of exercise self-schemata both theoretically and practically in order to enrich our understanding of and facilitate the enhancement of exercise adherence.     

Stability of Family Interaction from Ages 6 to 18

Research has demonstrated the stability of juvenile offending during childhood and adolescence but generally has not focused on the continuity of family interactions associated with juvenile offending. The present report focused on the stability of several family interaction events and attributes (i.e., physical punishment, communication, supervision, positive parenting, and parent–child relationship) for a large sample of male adolescents and their primary caretakers, drawn from a multiyear longitudinal study that represented middle childhood through late adolescence (ages 6–18). We also assessed the impact of ethnicity, family composition, teenage motherhood, and youth delinquency on these interactions. Test–retest correlations and growth-curve analyses were used to assess relative and absolute stability of the interactions, respectively. As predicted, relative stability of family interaction was high. There was an absolute change in scores of physical punishment (decreased) compared to poor supervision and low positive parenting (both increased), whereas poor communication and bad relationship with the caretaker did not measurably change with age. Single-parent families and families with teenage mothers experienced significantly worse interactions over time than did families consisting of two biological parents present in the household. These findings are discussed in relation to the development of juvenile offending.     

多级估量法在大学生职业价值观研究中的应用

用模糊数学中的多级估量法对532名大学生的职业价值观进行调查研究,结论如下(1)当代大学生的职业价值观呈现出多元化的特点,在多元化的职业价值体系中,"充分发挥能力"、创造性"、"收入"处于前三位,"地位、名声"、"成长为领导者"、"冒险",处于后三位.(2)用多级估量法不但可以得到用排序法得到的信息,而且可以得到用排序法得不到的更加细致的信息.(3)就整体而言,大学生的职业价值观不因其所在的学校、所学的专业科类、是否临近毕业、性别等因素的不同而不同.就部分而言,上述四大因素都对大学生的某些职业价值项目有一定的影响.     

Is empathy associated with more prosocial behaviour? A meta-analysis

Empathy is an important prerequisite for prosocial behaviour (PB). However, different concepts and methodological tools have been used in research on the relationship between empathy and PB, leading to ambiguous results. This study used a meta-analysis to explore this relationship and to identify the moderating variables. After a literature search, 62 studies and 146 samples with 71,310 participants were included. Our random effects model revealed a positive correlation of PB with both cognitive empathy (r = .32) and affective empathy (r = .30). In addition, the relationship between empathy and PB is moderated by culture, publication type, education level, and empathy measures. Our conclusion is that there is a significant correlation between empathy and PB that is influenced by sample characteristics and methodological factors.     

心算对内外倾者的心率、T波幅度和呼吸频率的影响

该文旨在探讨内、外倾者在三种不同难度心算时,心率、Ｔ波幅度、呼吸频率变化的差异。通过艾森克个性问卷筛选出１５名内倾者和１５名外倾者作为被试,让其完成三种不同难度的心算任务。实验结果表明,心算时两组被试心率均显著上升,内倾组上升幅度大于外倾组;Ｔ波幅度显著降低,内倾组降低幅度大于外倾组但差异不显著;呼吸频率显著上升,但两组上升幅度差异不显著。此外,从心率变化上看,两组被试对心算均表现出适应,内倾组的适应速度比外倾组慢。本实验表明,焦虑性精神紧张比智力操作性精神紧张对心率的影响更大。