睡眠剥夺对连续作业的影响

将18名青年被试随机分为三组,Sd21h、SD45h和SD69h,SD前后用内田—克莱佩林测试。结果为：(1)SD后组间比较,UK作业量、错误数、后期增减率各组之间有显著差异;订正数各组之间没有显著差异;(2)SD前后自身比较,各组UK总量、后一部分总量、错误数和后期增减率有显著差异;订正数无显著差异;SD21组前一部分总量有显著差异;而SD45和SD69组前一部分总量无显著差异。该结果表明,SD后警赏水平下降,在SD45小时后下降更为明显;UK测验中的后期增减率可较好地反映SD后警赏水平的变化。     

不同时间的睡眠剥夺对执行功能的影响

睡眠剥夺在日常生活工作中广泛存在,执行功能指需要很多认知过程参与,以使操作优化的机制.目前有关睡眠剥夺对认知功能的影响关注于对执行功能的影响,但是尚没有不同时间睡眠剥夺后执行功能情况的研究,并且研究缺乏系统.本研究应用卡片分类测验、词汇流畅性测验究了32名青年男性在不同睡眠剥夺条件下(睡眠剥夺21h、睡眠剥夺45h、睡眠剥夺69h、正常对照组)的执行功能情况.结果表明:睡眠剥夺后执行功能下降,同剥夺时间有一定关系,45h后下降显著.     

An Experimental Test of the Effects of Parental Modeling on Panic-Relevant Escape and Avoidance Among Early Adolescents

Escape and avoidance behaviors play a prominent role in the maintenance and possibly development of panic disorder, yet the literature regarding the etiology of these emotion-regulation strategies is relatively underdeveloped. The current study experimentally tests hypotheses that parental modeling of escape during a well-established panic-relevant biological challenge increases panic-relevant escape and avoidance among offspring. Fifty physically and psychologically healthy early adolescents (28 females; M_age = 11.58; 86% Caucasian), stratified by gender, were randomly assigned to observe one of their parents (39 females; M_age = 40.04): either (a) model completing a 3-min voluntary hyperventilation exercise (no escape modeling group) or (b) model premature termination of a similar procedure (escape modeling group). Offspring in the escape modeling group demonstrated a stronger escape response by discontinuing their own challenge sooner than those in the no-escape modeling group (r = .70). No group differences emerged in terms of avoidance responding, as indexed by nearly identical responding in terms of delay time before initiating the challenge, respiration rate, and self-reported willingness to engage in a second proposed challenge. Results suggest that parental behaviors may play an important role in the development of some forms of panic-relevant responding. These preliminary findings may have important implications for future prevention programs targeting parents and at-risk youth.     

小睡对40小时睡眠剥夺条件下短时记忆的影响

睡眠剥夺(sleep deprivation,SD)是指由于各种原因引起的睡眠丢失状态,并引起情绪、学习记忆、免疫功能等一系列改变。在生活节奏日益加快的今天,许多行业都有SD的存在。有关对抗措施目前主要有应用药物,包括镇静催眠药和中枢冲经系统兴奋药;注意睡眠卫生,包括预防性睡眠、小睡(在连续工作或St)中给予不超过30min的睡眠)和恢复性睡眠;作息制度的调整;训练等。     

The Effects of a Single Dose of Pemoline on Performance and Mood During Sleep Deprivation

Stimulants may be used to improve performance during sleep deprivation. A previous study found that multiple doses of pemoline (37.5 mg every 12 hr) during 64 hr of sleep deprivation improved speed of cognitive performance with variable effects on accuracy. In this study, a single dose of 37.5 mg of pemoline was administered once during the 2nd of 2 nights of sleep deprivation. With this administration schedule, participants showed improved performance, predominantly on accuracy (percentage correct) measures. Effects on speed were minimal. The three tasks which were primarily tests of reaction time showed no stimulant effects. Pemoline had no negative effects on performance, in contrast to the findings of the multiple-dose study. Administration at the time of maximum need (previous sleep deprivation added to the effects of the circadian low period for performance and alertness) may explain the change in effects.     

Responding to the Challenge of the Children's Health Act: An Introduction to Children in Research

This overview describes the breadth of topicscovered in this volume devoted to children inresearch. It summarizes how these articles areinterrelated and how they all respond to thechallenge proposed by the Children's Health Actof 2000: to consider what modifications, ifany, are necessary to current regulations ``toensure the adequate and appropriate protectionof children participating in research.'     

The Effect of State and Trait Self-Critical Rumination on Acute Distress: An Exploratory Experimental Investigation

Self-critical rumination is a process whereby individuals focus attention on past failures and inadequacies without consideration for improvement or problem-solving. Past research has demonstrated that self-critical rumination is a separate process from the experience of having intrusive self-critical thoughts and that engaging in self-critical rumination is strongly correlated with beliefs that it is uncontrollable or represents a weakness of character. What is less clear at this time, however, is the impact that self-critical rumination has on levels of distress when faced with failure. Thirty volunteers who were not experiencing significant levels of depression were randomly assigned across three groups: one rumination and two controls. Acute distress was measured prior to and immediately following a task, as well as upon debrief. Individuals expected to complete an impossible task, who experienced simulated self-critical rumination experienced greater levels of acute distress than controls immediately following the task. There was also a significant correlation between reported levels of trait self-critical rumination, negative metacognitive beliefs and self-esteem with levels of distress following debrief when controlling for initial levels of distress and group membership. The use of subjective self-reports and small sample size limits the findings of this exploratory study. Engaging in self-critical rumination, and associated negative metacognitive beliefs, may have a significant impact on levels of acute distress following a recent failure.

     

Effects of Acute Experimental Crowding1

Recent concern with population growth has begun to stimulate interest in the effect of crowding on humans. This report presents a model of crowding based on the concept of normative expectations concerning appropriate interaction distances. A study of acute experimental crowding was then conducted. Contrary to findings of prior research, the present study found that crowding produced arousal. Subsequent social behavior, however, was mediated by different sex-specific group processes. In general, crowded male groups displayed a competitive, fragmented orientation, whereas crowded women formed cohesive, cooperative groups. Contrary to preliminary expectations, subjects were differentially effected by crowding based on their seating position in the crowded room.     

An Experimental Investigation of Cognitive Defusion

The current study compared cognitive defusion with other strategies in reducing the impact of experimentally induced negative emotional states. Sixty-seven undergraduates were assigned to one of three conditions (cognitive defusion, thought suppression, or control) and instructed in standardized approaches relevant to each condition before viewing film clips intended to elicit fear, sadness, and disgust. Participants then rated their experience of each emotion and completed a Stroop task intended to indirectly measure emotional arousal. While participants did not show any differences in their experience of emotions through self-report, significant differences on the Stroop task provided evidence of varying degrees of arousal between participants using defusion, suppression, and control strategies, with thought suppression and defusion showing the greatest reduction in arousal. These findings were retained after controlling for individual differences in negative affect and suggest that defusion is an effective strategy for reducing emotional distress but raise questions about the specific mechanisms involved in the process.

     

Paradoxical Sleep Deprivation and Sleep Recording Following Training in a Brightness Discrimination Avoidance Task in Sprague–Dawley Rats: Paradoxical Effects

Previously, we reported that posttraining paradoxical sleep deprivation (PSD) resulted in an enhancement of the subsequent avoidance performance for rats trained for 15 trials in a Y-maze brightness avoidance discrimination task. A series of experiments were conducted to try to further understand the reasons for results which were contrary to those of the bulk of the sleep-learning literature. Experiment 1 investigated the effectiveness of the PSD technique. Rats (N= 4) were sleep recorded while residing on a “swimming pool” apparatus for 24 h. Compared to their baseline values, all animals showed a very large reduction in paradoxical sleep and spent significantly more time awake. Slow-wave sleep was unchanged. In Experiment 2, proactive motor effects were tested. Rats were deprived of PS for 24 h and then tested in a hole board motor activity task. There was a slight effect of PS deprivation on the day following the PSD and no effect when the rats were retested 1 week later. Experiment 3 investigated possible proactive effects of PSD on avoidance performance. Rats exposed to PSD in the 24 h before training in the Y-maze task did not demonstrate any facilitative effect on the subsequent avoidance performance. Experiment 4 investigated the possibility that the PSD facilitative effect could be due to partial training. Rats were given 75 acquisition trials in the brightness discrimination Y-maze avoidance before being subjected to 24 h of PSD. PS-deprived animals showed superior avoidance scores compared to non-PSD controls when retested 24 h later. In Experiment 5, the same strain of rats (N= 11) were sleep recorded after exposure to a partial acquisition in a Y-maze brightness avoidance discrimination task. They were then continuously monitored for 4 consecutive days. The percent PS for the Trained rats was significantly lower than that for the Control animals. This drop in percent PS was not confined to any particular time period in the 24-h day. None of the other sleep parameters reached significance. Analyses of the present results suggest that PSD exerts its facilitative effects on posttraining consolidation processes. We present arguments suggesting that PSD can have effects opposite to those generally reported, in animals demonstrating poor avoidance abilities, in an avoidance task.     

Masculinity and Emotionality: An Investigation of Men's Primary and Secondary Emotional Responding

In this study, we investigated the role of masculinity in men's affect intensity and men's fear of emotions. Men's masculine ideology and self-reported masculine gender role stress were assessed as cognitive and experiential factors of adherence to traditional masculine gender norms. Masculine ideology was negatively related to men's global affect intensity. However, on a 3-factor model of affect intensity, only negative reactivity was significantly related to masculine ideology. Both masculine ideology and masculine gender role stress were positively related to men's fear of emotions. Results are discussed in the context of theories of gender differences in emotion.     

Effects of Helper and Recipient Sex on the Experience and Outcomes of Comforting Messages: An Experimental Investigation

The purpose of this experimental study was to examine whether and in what ways the sex of the helper and the recipient moderate the effects of comforting messages in face-to-face interactions. A total of 216 participants disclosed an emotionally upsetting event to a confederate trained to display different levels of nonverbal immediacy and verbal person centeredness. Men and women responded very similarly to comforting messages that exhibited different levels of verbal person centeredness and nonverbal immediacy, and this response similarity was not moderated by the sex of the helper. Both men and women were most comforted by messages that exhibited high levels of person centeredness and nonverbal immediacy, and they were least comforted by messages that exhibited low levels of these qualities. Moreover, both sexes viewed highly person-centered and immediate messages as exhibiting the highest comforting quality, and, with one minor exception, both sexes viewed helpers who used these messages as the most competent.     

Effects of Responding or Not Responding to Hecklers on Audience Agreement with a Speaker

The hypothesis that responding to hecklers would produce more agreement with a speaker than not responding, stemmed from commodity theory (Brock, 1968). One hundred twenty-one introductory speech students participated in what they were told was a "speech workshop" (not a psychology experiment). Two types of responding to live hecklers were used: In one, the speaker responded in a calm, relevant manner; in the other, she responded in an upset, irrelevant manner. In a third condition, the speaker did not respond to the heckles. There were two additional conditions: One in which the speaker responded to interruptions, and a further control in which there were neither heckles nor interruptions. In these five conditions, the speaker either argued for or against the audience's position. Regardless of whether or not the speaker's position agreed with the audience's, upset-irrelevant responding decreased the speaker's persuasiveness over making no response, while calm-relevant responding tended to enhance persuasiveness. Finally, in agreement with all other empirical studies, it was clearly shown that heckling, whether responded to or not, did not improve the speaker's effectiveness.     

Stimulant Drug Effects on Performance and Behavior After Prolonged Sleep Deprivation: A Comparison of Amphetamine,Nicotine, and Deprenyl

Normal male subjects (N = 102) underwent total sleep deprivation in a laboratory environment for 48 hr. In separate dose-response, double-blind, placebo-controlled experiments, 36 subjects received single doses of d- amphetamine, 35 received intravenous nicotine, and 31 received l-deprenyl. All were deprived of sleep for an additional 12 hr. Amphetamine reversed the effects of sleep loss in a dose-related way, but the pattern and persistence of the reversal varied across measures. Neither nicotine nor I-deprenyl produced substantial persistent reversal of sleep deprivation effects. We conclude that these latter two agents are unlikely to be useful for the acute remediation of the effects of severe sleep loss. Although amphetamine is acutely effective, its usefulness in the treatment or prophylaxis of sleep loss requires further study.     

An Investigation into the Effects of Hypnosis on Basketball Performance

Abstract

The purpose of this study was to investigate the effects of hypnosis on set- and jump-shooting performance among male collegiate basketball players. A single-subject ABA research design combined with a procedure that monitors the internal experience of the participants (Wollman, 1986) was implemented. The results indicated that all three participants increased their mean jump- and set- shooting performance from baseline to intervention, with all three participants returning to baseline levels of performance postintervention phase. Finally, each participant reported they had felt the intervention had increased sensations they associated with peak performance. These results support the hypothesis that a hypnosis intervention can improve jump- and set-shooting performance and increase feelings and cognitions that are associated with peak performance.     

网络成瘾者的启动效应实验研究

本研究采用Tversky的社会认知实验范式对网络成瘾者的启动效应进行了研究.研究表明:(1)与非网络成瘾者相比,网络成瘾者具有更多的负性启动;(2)与非网络成瘾者相比,网络成瘾者具有更多的负性启动偏向.     

框架效应对公平判断影响的实验研究

本研究采用T(u)rnblom的概念框架和借鉴Eyal的框架公平原则的方法探讨了框架效应对公平判断的影响.研究揭示(1)在积极的框架方式下,被试在资源分配中认为非平均主义原则(如绩效、能力、努力、需要、工作年限)更公平;但总体上框架效应不显著.(2)被试对公平原则的评价受任务情境的影响.     

An Experimental Investigation of the Impact of Absolute and Relative Inequalities on Individual Satisfaction

Whereas recent evidences suggest absolute inequalities (i.e. inequalities between agents’ income measured in absolute terms) and relative inequalities (i.e. inequalities captured by the ratio between agents’ income) to have different cognitive implications, econometric models consider both measures as interchangeable when referring to individual satisfaction. Do income inequalities measured both on relative and absolute terms lead to the same effect on individual satisfaction? We implement an experimental protocol so as to investigate the impact of income inequalities on individual satisfaction. By implementing different treatments, we disentangle the impact of absolute income inequalities from the impact of relative income inequalities on individual satisfaction. We observe that individual satisfaction is significantly and negatively correlated to absolute income inequalities. Relative inequalities seem to have no effect on individual satisfaction.     

提纲策略对写作成绩影响的实验研究

本研究通过两个实验,考察了写作构思阶段的自我调控策略之一的提纲之运用对写作成绩的影响及其机制。实验一发现,书面提纲和心理提纲这两种常见的提纲形式对不同长度文章的写作质量有同等的积极影响;实验二发现,“半书面提纲”形式对写作质量的影响要显著好于书面提纲。研究表明,提纲策略效应的发挥,主要在于它帮助作者提高了构思阶段的认知加工水平。