阈下启动与记忆分类

20多年来,阈下启动研究有了重要进展,取得了一系列成绩。不仅研究领域有了明显扩展,研究方法和技术也有了很大改进。更为重要的是,阈下启动研究的结果对记忆结构和分类的理论有重要启示。     

青老年组不同难度下心算活动的脑功能磁共振成像研究

应用功能磁共振成像技术研究不同心算难度下脑区的活动以及年龄的影响。14名志愿者（20～29岁青年和60～69岁老年被试各7名）参加了该实验。实验任务为2个难度水平的连续减法心算,分别为1000—3和1000—17。结果表明：（1）心算加工激活了额叶和顶叶的许多脑区;（2）大脑左半球是心算加工的优势半球,但随着心算难度加大,大脑一侧化程度下降,而年老加剧了这一趋势;（3）青年组进行简单心算（1000—3）时,额中回未见明显激活,而老年组进行简单心算时,该脑区被明显激活。总体上,额叶和顶叶在心算活动中起着重要作用,而任务难度和年龄对心算加工时脑活动的影响以额中回区最为明显。     

Family meaning of self-starvation: themes discerned in family treatment in Hong Kong

This study aims to identify themes from the treatment of Chinese families with an adolescent or an adult member suffering from anorexia nervosa (AN), through a multiple case study. This study reveals that self-starvation may be regarded as a cultural metaphor. Four major themes emerged at the family level: self-starvation as an expression of love and control, coalition of the AN daughter with the mother, family loyalty, and the powerlessness and helplessness of the mother. The themes identified are narrative accounts of the Hong Kong Chinese families, rather than causal explanations proposed by Western literature. The emerging themes are believed to be constructed and legitimized by traditional Chinese cultural values, with females being subordinated to and dependent on males and the self being subjugated to or sacrificed for the collective. Treatment implications are discussed.     

教师上级信任、知识分享与工作绩效的关系

知识分享和组织信任能够有效提高绩效,已在企业组织中得到证实,但在学校组织中是否成立及作用路径如何鲜有实证研究探讨。本研究以天津市10所学校的168名教师为研究对象,通过问卷调查探讨教师对直接上级的信任、知识分享及教师工作绩效之间的关系。路径分析结果显示：教师上级信任和知识分享的不同维度对教师工作绩效的影响存在差异;教师知识分享的质量在教师上级信任的依赖维度与工作绩效的关系中起部分中介作用。     

Interpersonal relations as a source of risk of mobbing in the local police

Social relations in the workplace are one of the main sources of risk for the onset of mobbing. In this work, we analyzed, through the perceived social climate, the influence of interpersonal relations on the characterization of the processes of mobbing, in a sample of local police (N = 235). In particular, the policemen and women's opinions of the quality of the personal relations among the group members and the treatment they receive from the command posts were assessed. The results of the study show that the development of guidelines of social interaction based on discrimination and abuse of authority are predicting variables of mobbing in this group.     

Cognitive plasticity in Alzheimer's disease patients receiving cognitive stimulation programs

The main purpose of this article is to examine whether cognitive plasticity increases after cognitive training in Alzheimer's disease patients. Twenty six patients participated in this study, all of them diagnosed with mild Alzheimer's disease, 17 of them received a cognitive training program during 6 months, and the other 9 were assigned to the control group. Participants were assigned to experimental or control conditions for clinical reasons. In order to assess cognitive plasticity, all patients were assessed before and after treatment with three subtests from the "Bateria de Evaluación de Potencial de Aprendizaje en Demencias" [Assessment Battery of Learning Potential in Dementia] (BEPAD). After treatment, Alzheimer's disease patients improved their performance in all the tasks assessing cognitive plasticity: viso-spatial memory, audio-verbal memory and verbal fluency. However, the cognitive plasticity scores of the patients in the control group decreased. In conclusion, this study showed that cognitive stimulation programs can improve cognitive functioning in mildly demented patients, and patients who do not receive any cognitive interventions may reduce their cognitive functioning.     

Cognitive impairment in the early phase of multiple sclerosis and its relationship with mood, demographic and clinical variables

Our aim was to study cognitive performance in the early phase of MS. In addition, we studied whether depression, demographic and clinical variables differentiate cognitively impaired patients from non-impaired patients. A group of 52 MS-RR patients with mild level of neurological disability and 51 healthy controls were administered a comprehensive neuropsychological battery. The MS group performed significantly worse on several measures of attention and processing speed and visuoperceptive/visuoconstructive tasks. Verbal memory is characterized by working memory deficits, whereas the visual memory impairment is attributable to deficits in acquisition and consolidation/recuperation. Results shows that cognitive impairment is evident even in MS patients in the early course of their disease. Depression scores were higher in cognitively impaired patients as compared with unimpaired patients. The effect of educational level suggests that higher education delays the onset of cognitive decline.     

Tangibles as predictors of customer satisfaction in sports services

This study investigates the power of tangible dimensions of service quality to predict customer satisfaction. For this purpose, we statistically controlled the effects of dimensions of service quality that describe social interaction between employees and customers, both functionally and relationally. A field survey was conducted with the participation of 556 customers of a sports centre. The results showed that tangible dimensions of service quality predicted an additional and significant amount of customer satisfaction variance, beyond the effects of service quality of the social interaction. The article concludes with the discussion of the implications of these results.     

Evaluation of Halpern's "structural component" for improving critical thinking

Halpern (1998) proposed a four-component model for promoting the transfer of critical thinking. One of them, the "structural component," focuses on how to organize teaching so that critical thinking skills can be generalized. Here, we assess the efficiency of that type of organization. Thus, one group of university students received instruction following the suggestions specified in that component and their performance was compared with that of other university students who received instruction in the same skills but using a different procedure, and with that of a control group. In comparison with the control group, the performance of both instructed groups was better after training. However, no significant differences were observed between either instruction group; both forms of instruction afforded very similar results.     

The development of academic competence among adolescents who bully and who are bullied

Using data from the first three waves (Grades 5, 6, and 7) of the 4-H Study of Positive Youth Development, this study assessed if being a bully or being a victim accounts for an adolescent's academic competence, if selected contextual and individual variables impact an adolescent's academic competence, and if such impact differs in relation to an adolescent's bullying status. The results of random coefficient hierarchical regression analyses indicated that being a bully predicted lower grades across time, and that being a bully was more detrimental for girls than for boys. Being a bully and being a victim negatively predicted self-perceived academic competence, but these predictive effects did not change over time or differ by sex. Teacher support positively predicted grades and greater parent support and teacher support independently predicted higher self-perceive academic competence. Greater educational expectations and school engagement independently predicted higher self-reported grades, while these two predictors positively interacted in explaining self-perceived academic competence. Unexpectedly, peer support negatively predicted self-reported grades for victims, and negatively predicted self-perceived academic competence for bullies. We discuss the importance of addressing the issue of academic competence in bullying interventions, as well as the utility of capitalizing on developmental assets in promoting academic competence among adolescents who bully and who are bullied.