多义词意义间的联系程度对词汇判断时间的影响

采用词汇判断法,考察双字多义词各意义间的联系程度对词汇判断时间的影响,同时考察,意义间联系程度不同的多义词与单义词的词汇判断时间的关系。实验结果表明:汉语中双字多义词意义间联系程度的高低没有对多义词词汇判断的时间产生影响。在低频词的条件下,双字多义词,不管其意义间联系程度的高低,词汇判断的时间都快于单义词的判断时间,这表明汉语词汇识别中,存在低频多义词的识别优势效应。     

关于临床决策问题

医生在临床工作中做出明确诊断,并据此给予有效的处理均属于决策过程。制定决策的整个过程,同时也是进行决策思维的过程。近年来高新技术的迅猛发展以及医疗费用急剧增加,使制定决策更加复杂。如何进行正确的决策思维,做出最切实可行的和最佳的决策,对避免决策的盲目性、局限性及惰性具有重要的现实意义。     

构建科学的冠心病介入治疗临床决策

临床决策已成为临床医学的重要内容,但目前还为许多冠心病介入医生所忽视。阐述了临床决策的概念,分析了冠心病介入治疗决策中存在的问题及原因,探讨了如何构建科学的冠心病介入治疗决策,为冠心病介入治疗合理应用提供科学的决策方法。     

器官移植的临床决策难题——医务人员面临的伦理尴尬

器官移植技术在临床的推广应用,在有效救治病人同时,也面临着复杂的伦理问题,医务人员身处诸多两难的尴尬境地,已成为临床决策过程中亟待解决的难题。     

The role of self‐esteem and anxiety in decision making for self versus others in relationships

Previous research has documented a tendency for people to make more risk‐seeking decisions for others than for themselves in relationship scenarios. Two experiments investigated whether this self–other difference is moderated by participants' self‐esteem and anxiety levels. In Experiment 1, lower self‐esteem and higher anxiety levels were associated with more risk‐averse choices for personal decisions but not for decisions for others. Therefore, participants with lower self‐esteem/higher anxiety showed greater self–other differences in comparison to participants with higher self‐esteem/lower anxiety levels. Experiment 2 demonstrated that this effect was largely mediated by participants' expectations of success and feelings about potential negative outcomes. These results are discussed in the context of “threats to the self,” with a central role played by anxiety and self‐esteem threats in personal decision making but not in decision making for others. Copyright © 2005 John Wiley & Sons, Ltd.     

赌博障碍的认知功能缺陷及神经基础

赌博障碍是指持续且反复的赌博行为,给个人、家庭和社会都带来了严重后果,近年来受到越来越多研究者的关注。本研究总结了赌博障碍的认知功能缺陷及其神经基础,主要集中在如下四个方面：①认知扭曲、②奖赏和惩罚敏感性、③注意偏向和④决策。未来研究应多从认知神经科学角度深入探究赌博障碍的发生机制和发展过程,关注大脑结构变化及功能网络改变,并将其整合到一个统一的神经生物机制框架中,找到更加有效的干预和治疗手段。     

Evaluating a dual‐process model of risk: affect and cognition as determinants of risky choice

In three studies we addressed the impact of perceived risk and negative affect on risky choice. In Study 1, we tested a model that included both perceived risk and negative affect as predictors of risky choice. Study 2 and Study 3 replicated these findings and examined the impact of affective versus cognitive processing modes. In all the three studies, both perceived risk and negative affect were shown to be significant predictors of risky choice. Furthermore, Study 2 and Study 3 showed that an affective processing mode strengthened the relation between negative affect and risky choice and that a cognitive processing mode strengthened the relation between perceived risk and risky choice. Together, these findings show support for the idea of a dual‐process model of risky choice. Copyright © 2008 John Wiley & Sons, Ltd.     

行为决策研究的新取向——基于经验的决策

基于经验的决策是指,在统计概率情境中,个体通过重复选择与反馈获得选项的收益分布信息后进行的决策.基于经验的决策的研究范式主要包括探索-利用范式和探索→利用范式.其暗含的决策人假设是朴素直觉统计学家.其研究关注的主要内容是描述-经验的差异及其原因,以及基于经验的决策内部过程.未来的研究主要从描述-经验差异的原因、描述性决策范式下的结论的重新检验、基于经验的决策的解释模型及其应用研究等方面进行探讨.     

Predicting the Vote: Implicit Attitudes as Predictors of the Future Behavior of Decided and Undecided Voters

Two studies assessed the predictive validity of implicit political attitudes in relation to voting behavior. In Study 1 , we demonstrated the validity of the adopted measure (i.e., the IAT; Greenwald, McGhee, & Schwartz, 1998 ) with a sample of voters who clearly sided with one of the opposing parties. In Study 2 , implicit political preferences were measured in a sample of undecided voters one month before the election, and actual voting behavior was assessed immediately after the election. Results demonstrated that implicit political attitudes were good predictors of future voting behaviors. These findings support the hypothesis of the presence of embryonic attitudes even in the case of those voters who at the explicit and conscious level deny any preference for one of the two opposing candidates.     

Spoken-word processing in aphasia: effects of item overlap and item repetition

Two studies were carried out to investigate the effects of presentation of primes showing partial (word-initial) or full overlap on processing of spoken target words. The first study investigated whether time compression would interfere with lexical processing so as to elicit aphasic-like performance in non-brain-damaged subjects. The second study was designed to compare effects of item overlap and item repetition in aphasic patients of different diagnostic types. Time compression did not interfere with lexical deactivation for the non-brain-damaged subjects. Furthermore, all aphasic patients showed immediate inhibition of co-activated candidates. These combined results show that deactivation is a fast process. Repetition effects, however, seem to arise only at the longer term in aphasic patients. Importantly, poor performance on diagnostic verbal STM tasks was shown to be related to lexical decision performance in both overlap and repetition conditions, which suggests a common underlying deficit.