On the possibility and desirability of constructing a neutral conception of disability

Disagreement about the properattitude toward disability proliferates. Yetlittle attention has been paid to an importantmeta-question, namely, whether ``disability' isan essentially contested concept. If so, recentdebates between bioethicists and the disabilitymovement leadership cannot be resolved. Inthis essay I identify some of the presumptionsthat make their encounters so contentious. Much more must happen, I argue, for anydiscussions about disability policy andpolitics to be productive. Progress depends onconstructing a neutral conception ofdisability, one that neither devaluesdisability nor implies that persons withdisabilities are inadequate. So, first, I clearaway the conceptual underbrush that makes usthink our idea of disability must bevalue-laden. Second, I sketch someconstituents of, and constraints upon, aneutral notion of disability. This revised version was published online in June 2006 with corrections to the Cover Date.     

驾驶员的动态反应时研究

本研究应用DFY-1型动态反应时测试仪,以解放CA10B 型卡车为实验用车,结合日常运输任务,对三种年龄组(20—29岁、30—39岁、40—49岁)的30名驾驶员,在三种车速(静态,30公里/小时及50公里/小时)条件下的反应时、动作时及制动反应时进行了测试。结果表明:车速对驾驶员的反应时及制动反应时有显著影响,而对动作时则无显著影响;驾驶员的年龄对反应时、动作时及制动反应时均无显著影响.本研究结果为加强驾驶员的安全教育与管理,控制车速提供了佐证。更高车速条件下驾驶员的反应时特点尚待进一步研究。     

Psychological aspects of scuba diving injuries: Suggestions for short-term treatment from a psychodynamic perspective

Dive medicine is described as an area of practice in which psychologists may choose to expand their clinical service and research activities. The author argues that most research studying risk behavior and sports take into account biological, behavioral or cognitive approaches, while ignoring unconscious conflict in risk-taking and injury management. The present paper uses a psychodynamically-oriented, interview-based approach to studying psychological reactions to decompression sickness in three experienced scuba divers. Brief interventions and their outcomes are described.     

学生的自我妨碍行为及其教育干预

学校是典型的能力评价情境,学生的自我妨碍行为较为常见。自我妨碍行为的潜在认知机制是防御性归因模式,学生会有意无意地采取不努力等多种方式为学业成功设置障碍,这样在失败时以避免对自己做缺乏能力的归因,从而保护自我价值和他人心目中的能力形象。文章从自我妨碍行为的动机、结果、归因、影响因素等多方面进行了探讨,并在此基础上提出了一系列有效的预防和干预措施。     

Stimulus affectivity of the Danish Word Association Test as measured by response heterogeneity and Rasch scaled number of prolonged reaction times

With the purpose of increasing the knowledge of the psychometric properties of the 70-item Danish Word Association Test, data from three samples of non-patients and psychiatric patients (N = 326) were used to provide two measures of affectivity of the stimulus words, response heterogeneity and reaction time prolongation. It was possible to fit an item response theory one-parameter measurement (Rasch) model to the number of reaction time prolongations (> or =3 seconds) for 54 of the stimulus words. Correlation between Rasch-model item parameters and response heterogeneity was high (r = 0.86), while no correlation was found between either of these measures and frequency of the stimulus words in the Danish language. Both measures of stimulus affectivity supported a theoretically based classification of stimulus words as emotional or neutral. Response heterogeneity measures and Rasch measurement item and person parameters for reaction time prolongations are provided.     

Effects of time uncertainty and instructed muscle tension on fractionated reaction time

Abstract: An experiment was conducted to examine the effects of time uncertainty and instructed muscle tension on the reaction time of elbow flexion. Twenty-two right-handed subjects were asked to respond to an audio stimulus by flexing their right elbow under four conditions (2 time uncertainty × 2 instructed muscle tension). Electromyograms (EMGs) were recorded from the biceps and triceps on the subject's right side. Reaction time was divided into premotor time and motor time, based on the difference between the EMG and elbow flexion response. Analysis of reaction time showed that the effects of time uncertainty and instructed muscle tension were additive. Time uncertainty affected premotor time only, and instructed muscle tension affected motor time only. These results are discussed in terms of the assumption that premotor time is a reflection of the central nervous system and motor time is a reflection to the peripheral muscle system.     

按键位置对手机键盘拇指操作绩效的影响

本研究假设对于同样的手机键盘操作任务,手机各按键的位置不同,在操作绩效上存在差异。该研究实验从被试的客观操作绩效(反应时和正确率)和主观满意度评价两方面证实了该假设的成立:在保持被试自然姿势操作手机键盘的情况下,各按键在手机键盘中的位置确实对操作工效有较大影响。     

组织支持对工作压力的中介效应研究——基于知识型员工样本的实证分析

采用中介变量分析的一般范式,以知识型员工为研究样本,实证检验了组织支持在工作压力源与压力反应之间的中介效应。研究表明:组织支持在良性压力源(如任务要求、能力要求)与积极压力反应(如组织承诺、工作满意度、工作参与感)之间发挥显著的中介作用;在负性压力源(如人际冲突、组织结构问题、时间冲突)与积极和消极压力反应(如消极工作情绪)之间都发挥显著的缓冲作用。管理者在知识型员工压力管理过程中,应高度重视组织支持的中介缓冲作用。     

Is implicit sequence learning impaired in schizophrenia? A meta-analysis

Cognition in schizophrenia seems to be characterized by impaired performance on most tests of explicit or declarative learning contrasting with relatively intact performance on most tests of implicit or procedural learning. At the same time there have been conflicting results for studies that have used the Serial Reaction Time (SRT) task to examine implicit learning in people with schizophrenia. In the present research, we used meta-analysis to clarify whether or not people with schizophrenia show impaired performance on the SRT task. A systematic review found nine studies published in peer review journals that had each compared the performance of a group of people with schizophrenia with healthy controls on the standard SRT task or a variant of it. The resulting meta-analysis represented the responses of 205 participants with schizophrenia and 159 healthy controls on the SRT task. The analysis found that participants with schizophrenia perform less well than controls reflected by a pooled effect size of 0.51. A secondary analysis of all nine studies found that they all reported a point estimate of the change in reaction time between sequence and random trials that was greater for the controls. We conclude that there is a moderate impairment in implicit sequence learning among people with schizophrenia and speculate on the implications of this for understanding this disorder. Suggestions for improving the methodological quality and statistical reporting of studies of this topic are made.     

Don't get stuck in the mother: regression in analysis

This paper was part of an afternoon workshop on regression. It re views the author's recollections of her own analysis and clinical work with the purpose of discovering the sources of her own ideas on regression. Two specific forms of regression are then delineated – negative therapeutic reaction as described by Rosenfeld and 'umbilical transference' as a possible future development.