The coupling of short sleep duration and high sleep need predicts riskier decision making

Abstract

Objective: To examine how risk-related decision making might be associated with habitual sleep variables, including sleep variability, sleep duration and perceived sleep need in young adults cross-sectionally and longitudinally.

Design: 166 participants completed a 7-day protocol with sleep and risk-related decision-making measures at baseline (T1) and 12 months later (T2).

Results: Habitual short sleep duration (averaging < 6?h nightly) was identified in 11.0% in our sample. After controlling for baseline demographic factors and risk-taking measures, self-reported sleep need at T1 interacted with habitual short sleep in predicting risk taking at follow-up (F_8,139=9.575, adjusted R²=.431, p<.001). T1 greater perceived sleep need predicted more risk taking among short sleepers, but decreased risk taking among normal sleepers at T2. Variable sleep timing was cross-sectionally correlated with making more Risky choices at baseline and fewer Safe choices after loss at follow up.

Conclusions: Young adults with variable sleep timing and those with short sleep duration coupled with high perceived sleep need were more likely to take risks. The moderating effects of perceived sleep need suggest that individual differences may alter the impact of sleep loss and hence should be measured and accounted for in future studies.     

全球视野下高等医学教育面临的挑战与改革出路

医学卫生人才培养质量和高等医学教育改革备受全球瞩目。分别从体制层面涉及的四个功能和教学层面涉及的四个方面分析了目前我国高等医学教育面临的一些问题及其原因,并从全球视野出发,重新定位医学教育改革的目标,探讨在全球视野下我国高等医学教育改革的出路,提出改革构想。     

DTC基因检测的伦理思考

直接面向消费者提供基因检测服务称为Direct-to-Consumer (DTC)基因检测.随着人类基因组计划测序工作的完成,DTC基因检测服务行业逐渐发展起来,它的出现与人们日益提高的健康需要相适应.但与此同时,一些社会伦理和法律问题也随之产生.对DTC基因检测的现状以及各国对其认可度进行阐述,剖析DTC基因检测存在的伦理问题,如隐私问题,有限的预测价值,检测信息的准确性,检测结果对受试者造成的负面心理影响,以及由此产生的基因歧视和卫生保健资源的浪费等.     

TKA术后夹闭和开放引流管对出血量和输血量影响的比较研究

前瞻性研究全膝关节置换术（TKA）术后引流管夹闭4小时对患者术后出血量和输血量的影响。将我院2010年2月至2011年2月因骨性关节炎晚期行TKA的患者71例,随机分为两组。一组为夹闭引流管组,另一组为持续开放引流管组。两组均于术后48小时拔出引流管。将两组患者术前及术后1天、2天、3天的血红蛋白（HB）计数、术后引流液量及术后输血量进行比较。结果显示,夹闭引流管组与持续开放组患者相比,两组切口引流量存在差异。因此,与持续开放引流管方法相比,TKA术后采用夹闭引流管4小时的方法可以减少引流量,但不减少术后出血量及输血量。     

汉语“主观词”的表征及其加工

本文提出了"主观词"的概念,并探讨主观词存在的心理现实性以及主观词的加工特征。包括3项研究:研究1考察了普通大学生对双字结构的词汇辨别情况,发现他们倾向于将短语和词主观判断为词,即他们按照个体对词的独特表征认知词,证实了主观词存在的心理现实性。研究2和研究3分别采用"词优效应"研究中使用的强迫选择作业和词汇判断任务考察主观词加工的特征。研究2发现,读者加工词和主观词(语法上是短语但主观评定为词)的正确率和反应时没有差异,但与非词条件相比,表现为正确率高,反应时短;研究3的反应时结果同研究2,而3种条件的正确率均在90%以上且不存在显著差异。在本研究条件下,得出以下结论:(1)主观词的存在具有心理现实性:读者对汉语词语的表征是主观的,不一定符合词的语法学规定;(2)在强迫选择作业下,与非词相比,表现出词优效应,主观词作为整体被识别。(3)在词汇判断任务下,主观词与词相同,与非词相比,表现出加工优势。     

重构我国医德规范体系论要

由于我国现有医德规范体系构成混乱、规定抽象、功能低下,已严重不适应医学发展尤其是医德建设的现实需要,因此,亟需对现有医德规范体系加以解构,并在解决人道理念与功利理念相统一、传统规范体系现代化与外来规范体系本土化相统一、先进性要求与普遍性要求相统一、宣传教育功能与实际调节功能相统一等关键问题中,按照"一个原则、六个准则、十二个范畴"的总体框架进行科学、合理的重构.     

亲子沟通类型与青少年社会适应的关系

从北京市一所普通中学和济南市一所重点中学选取初一至高三六个年级720名学生为被试,探讨亲子沟通类型与青少年社会适应的关系。要求被试分别报告亲子沟通、学习成绩、自尊、抑郁、羞怯和问题行为的情况。结果发现:(1)在青少年与父母的沟通中,关系定向的沟通明显多于观念定向的沟通;随着年级的增长,关系定向和观念定向的沟通都有明显的增加;(2)在亲子沟通的类型中,保护型亲子沟通最多,其次为多元型亲子沟通,放任型和一致型亲子沟通最少;四种亲子沟通的年级分布存在明显的差异,初中生的放任型和保护型亲子沟通多于高中生,而高中生的多元型和一致型亲子沟通多于初中生;(3)同一种亲子沟通既可能促进青少年的积极社会适应,同时也可能增加青少年的消极社会适应。     

Inventory of college challenges for ethnic minority students: psychometric properties of a new instrument in Chinese Americans

The Inventory of College Challenges for Ethnic Minority Students (ICCEMS) is a newly developed instrument that assesses challenges faced by ethnic minority college students across a range of cultural, academic, social, and practical domains. The present study tested the ICCEMS among Chinese American students in an attempt to identify its factor structure and assess its psychometric properties. A total of 13 factor domains emerged. The Cronbach's alpha and 1-month test-retest reliability of the subscales and the overall scale supported their reliability. Both criterion and construct validities were also demonstrated. Chinese American college students faced the greatest challenges in terms of unclear career direction and academic demands.