Blood pressure and heart rate responses to an intrusion on personal space

Abstract: Yaezawa and Yoshida's (1981 ) findings on the effects of an intrusion on personal space were reinvestigated. Thirty-five female students were confronted with the approach of a male stranger, and blood pressure (BP) and heart rate (HR) were monitored. Throughout the model's approach, HR showed a significant triphasic change (an initial decrease, a subsequent increase, and then a secondary decrease), whereas subjective feelings of anxiety and tension showed significant, gradual increases. These trends were similar to those of Yaezawa and Yoshida's . Nonetheless, their explanation that the triphasic change in HR reflected once hightened and then relieved tension, which was incongruent with the subjective ratings, seemed questionable. As the BP elevated to a moderate degree in spite of the modest HR changes, total peripheral resistance must have been increasing during the model's approach. Blood pressure elevations via this sort of hemodynamic pressor mechanisms have often been reported when a person can only tolerate passively during exposure to stress. This seems to be the case in an intrusion on personal space.     

Solo status, stereotype threat, and performance expectancies: Their effects on women’s performance

Women working in male-dominated environments may find themselves to be the only woman present, and that negative stereotypes about women persist in the environment. This experiment tested women’s performance in solo status (SS: being the only woman present) and under stereotype threat (ST: when women are stereotyped as poor performers). White male and female participants (157) learned information, then tested on it in an opposite-gender (SS) or same-gender group (nonsolo). In addition, the information was described as being traditional math material (ST) or a type of math information impervious to gender stereotypes (no threat). Women performed more poorly in SS than nonsolos, and under ST than no threat. Experiencing both factors was more detrimental to women’s performance than experiencing one or the other. Men’s performance was the same across all conditions. Performance expectancies partially mediated the effect of SS, but not ST, on performance.     

愤怒有度:领导表达愤怒情绪对领导绩效的影响

领导表达愤怒情绪一定不好吗?最近研究发现,领导表达愤怒情绪对领导绩效(任务绩效和关系绩效)存在积极影响与消极影响的不一致结论。文章尝试使用双阈限模型揭示领导的愤怒情绪产生积极影响或消极影响的边界条件。进一步明确领导表达愤怒情绪的阈限是影响领导绩效的关键因素,拓展了双阈限模型对领导愤怒情绪影响其领导绩效的理论解释。     

The cognitive antecedents and motivational consequences of the feeling of being in the zone

The feeling of being in the zone (related to “flow”) is marked by an elevated yet effortless sense of concentration. Prior research suggests that feelings of being in the zone are strongest when the demand posed by a task matches one’s level of ability (i.e., the balance hypothesis). In the present article, we tested this hypothesis using a novel experimental paradigm. By collecting numerous zone judgments for each participant, we were able to examine intra-individual sources of variance that explain why people often feel more or less in-the-zone on the same task from one moment to the next. The results of two experiments provide support for what we have termed the balance-plus hypothesis, which posits that zone experiences are strongest (Experiments 1–2) and have the greatest motivational force (Experiment 2) when the balance between task demand and ability is accompanied by positive assessments of one’s own performance.     

运动视觉中计时行为的控制操作理论

运动视觉中的计时行为分为两类 :拦截行为和制动行为。“环境—活动者系统”(EAS)中的信息决定着计量行为的控制操作。本文阐明了信息和EAS的特性 ,通过对 tau-margin在拦截行为中的作用以及视觉变量τ对于制动操作重要性的分析 ,论述了运动视觉中计时行为的控制操作理论。     

When to Self-Correct?: A Comparison of Two Procedures on Spelling Performance

We compared the effects of two self-correction procedures on the spelling performance of 5 elementary school students with learning disabilities. Previous studies consistently have demonstrated self-correction to be more effective than traditional approaches to spelling instruction. However, we could find no single-subject design experiments analyzing the procedural details of how or when self-correction should be conducted to be most effective. For 4 days each week students practiced a list of 20 spelling words by listening to an audiotape on which the weekly list was dictated and writing the words. For half of each week's words, students checked and self-corrected after attempting each word; for the other half of the list, the students self-corrected after attempting all 10 words. An alternating treatments design showed self-correction after each word to be more effective for acquisition of new spelling words as measured by end-of-the-week tests for all 5 students, and maintenance of previously studied spelling words as measured by 1-week maintenance tests for 4 of the 5 students.     

Structural Stability within the Lateral Cerebellar Nucleus of the Rat Following Complex Motor Learning

Complex motor learning, but not mere motor activity, has been previously shown to induce structural modifications within the cerebellar cortex. The present experiment examined whether similar changes occur within one of the primary output targets of the region of the cerebellar cortex in which these structural changes were described, the lateral cerebellar nucleus (LCN; dentate nucleus). Adult female rats were randomly allocated to one of three training conditions. Acrobatic condition (AC) rats were trained to complete a complex motor learning task consisting of a series of elevated obstacles while motor control (MC) condition animals were forced to traverse a flat obstacle-free runway equal in length to the AC task. Inactive condition (IC) animals received no motor training. Unbiased stereological techniques and electron microscopy were used to obtain estimates of synapse number and postsynaptic density (PSD) length within the LCN. Results showed that neither synapse number nor PSD length was significantly altered as a function of training condition. These results indicate that complex motor skill learning is associated with structural plasticity within the cerebellar cortex and with structural stability within the lateral cerebellar nucleus.     

成就目标对青少年成就动机和学业成就影响的研究

本研究在迈尔（Maehr）等人研究的基础上,考察了成就目标（任务目标和能力目标）与动机和学业成就之间的关系。结果表明,任务目标通过内部动机对学业成就产生积极的影响,能力目标通过外部动机对学业成就产生消极的影响。