Interaction and representational integration: evidence from speech errors

We examine the mechanisms that support interaction between lexical, phonological and phonetic processes during language production. Studies of the phonetics of speech errors have provided evidence that partially activated lexical and phonological representations influence phonetic processing. We examine how these interactive effects are modulated by lexical frequency. Previous research has demonstrated that during lexical access, the processing of high frequency words is facilitated; in contrast, during phonetic encoding, the properties of low frequency words are enhanced. These contrasting effects provide the opportunity to distinguish two theoretical perspectives on how interaction between processing levels can be increased. A theory in which cascading activation is used to increase interaction predicts that the facilitation of high frequency words will enhance their influence on the phonetic properties of speech errors. Alternatively, if interaction is increased by integrating levels of representation, the phonetics of speech errors will reflect the retrieval of enhanced phonetic properties for low frequency words. Utilizing a novel statistical analysis method, we show that in experimentally induced speech errors low lexical frequency targets and outcomes exhibit enhanced phonetic processing. We sketch an interactive model of lexical, phonological and phonetic processing that accounts for the conflicting effects of lexical frequency on lexical access and phonetic processing.     

内侧颞叶系统在知觉启动中的作用及其机制

以ll例内侧颞叶(MTL)损伤病人为被试,探讨MTL与知觉启动的关系及其内在机制。被试依次完成学习颜色词、快速词命名和再认任务。在实验l的词命名中包括旧词、重组颜色词和新词,结果表明,MTL损伤病人没有表现出旧词的命名时间短于重组颜色词的现象,颜色启动效应受损,其再认成绩也低于正常被试。但是当用新颜色词代替重组颜色词后(实验2),MTL损伤病人读旧词的时间明显短于新颜色词,颜色启动与正常对照组之间没有明显差别,但他们的再认成绩仍比对照组低。这表明,当任务要求被试加工项目与其特性之间的关系时(词与颜色),MTL损伤对启动效应会有影响,提示MTL在一些形式的知觉启动中起重要作用。     

论药物治疗安全：药疗错误的科学定位与安保革新

面对越来越多的最普遍的一种医疗错误—药物治疗错误,以及由此带给患者的身体损害和经济损失,必须对药疗错误进行科学定位和对患者安全保障体系与措施的革新。本文不在于详尽地论述药疗错误和安保的革新,而是通过对药疗错误的科学定位,提出对药疗错误的预防优先和以医者与患者为中心的药疗安全保障,强调重在研究和应用与药疗安全问题相关的健康信息技术和改变认知与处理药。总的认为:关于药疗安全与药疗错误,执行安全措施的障碍和改善药疗管理的当前和可能的机制以及我们应当知道什么和可以怎样做为好。     

Comparisons of women with high and low trait impulsivity using behavioral models of response-disinhibition and reward-choice

Two types of behavioral models of impulsive behavior, response-disinhibition/attentional and reward-choice response models, were used to compare women grouped by high (Impulse+, n=43) and low (Impulse−, n=43) self-reported impulsive behavior on the Eysenck I₇ Questionnaire. Two of the four different tasks tested were response-disinhibition/attentional models; these included the Immediate and Delayed Memory Task and the GoStop Task. The other two tasks were based on the reward-choice model of impulsivity and included the Single Key Impulsivity Paradigm and the Two-Choice Reward Task. Of particular interest was whether commission errors (response-disinhibition/attentional paradigms) or a preference for smaller–sooner rewards over larger–later rewards (reward-choice) would differ between the groups. Participants completed one session of each task in a single day. The most significant findings were that the Impulse+ group had: (1) elevated commission errors; (2) lower stimulus discriminability (between target and catch stimuli); and (3) poorer response inhibition to a stop signal. Responding on the response-disinhibition/attentional tasks distinguished between the impulsivity groups while the reward-choice tasks did not. These results demonstrate that women who report higher levels of trait impulsivity respond in a manner consistent with previous studies examining impulsive behavior.     

不同注意条件下的知觉启动及其机制

采用快速命名方法探讨不同注意条件下的知觉启动效应及其机制。实验中呈现一系列颜色词,要求被试分别完成集中和分散注意任务,然后进行词命名和再认测验。在词命名任务中．实验1包括旧词、重组颜色词和新词,而在实验2中重组颜色词改为新颜色词。结果表明,在实验1中,只有在集中注意条件下,被试对旧词的命名时间明显短于重组颜色词．即表现出知觉启动效应。而在实验2的两种注意条件下,被试对旧词的命名时间均明显短于新颜色词。这提示,在不同注意条件下的学习会影响其后的颜色知觉启动,并且与词和颜色的联结捆绑有关。     

Self-reference enhances relational memory in young and older adults

The present study investigated the influence of self-reference on two kinds of relational memory, internal source memory and associative memory, in young and older adults. Participants encoded object–location word pairs using the strategies of imagination and sentence generation, either with reference to themselves or to a famous other (i.e., George Clooney or Oprah Winfrey). Both young and older adults showed memory benefits in the self-reference conditions compared to other-reference conditions on both tests, and the self-referential effects in older adults were not limited by low memory or executive functioning. These results suggest that self-reference can benefit relational memory in older adults relatively independently of basic memory and executive functions.     

Reasonable Impartiality and Priority for Compatriots. A Criticism of Liberal Nationalism’s Main flaws

Distinguishing between reasonable partiality and reasonable impartiality makes a difference in resolving the serious clashes between priority for compatriots versus cosmopolitan global duties. Defenders of a priority for compatriots have to acknowledge two strong moral constraints: states have to fulfil all their special, domestic and trans-domestic duties, and associative duties are limited by distributive constraints resulting from the moral duty to fight poverty and gross global inequalities. In the recent global context, I see four main problems for liberal-nationalist defenders of priority for compatriots: (i) Reasonable particularists often forget that associative duties for compatriots compete with many sub-national and trans-domestic associative duties. (ii) They tend to forget that associative national duties compete with other, strong special (contractual, reparative) obligations regarding not only citizens and residents inside nation-states but also trans-domestic obligations across state borders. (iii) They do not properly discuss the problem of unallocated duties in addressing global poverty and insecurity. (iv) The design of supra-national and global mediating institutions, and the crafting of policies to remedy the misallocation of duties and to coordinate the required state activities is an urgent task neglected by liberal nationalists. In the recent context, reasonable partialitys bias towards partiality is most unwelcome and morally dubious. Reasonable impartialitys bias towards cosmopolitanism helps to stimulate a drastic shift in obligations and stimulates productive trans-national institutional design.     

Morphological units in the Arabic mental lexicon: evidence from an individual with deep dyslexia

An ongoing debate in Arabic morphology concerns the nature of the smallest unit governing lexical organization and representation in this language. A standard model maintains that Arabic words are typically analyzable into a three-consonantal root morpheme carrying the core meaning of words and a prosodic template responsible mostly for grammatical information. This view has been largely supported by research in both theoretical linguistics and psycholinguistics. An alternative theory holds that the meaning of words in Arabic is, rather, encoded in the 'etymon' comprising two unordered consonants of the root only. Results from a recent priming experiment have shown that the etymon induces strong morphological priming effects, supporting its morphological/lexical status. In this paper we present data from a patient with deep dyslexia questioning the role of the etymon as a psychologically real representational unit in Arabic and arguing, instead, for the central role of the root in both morphological and lexical representation in this language.     

Associations Among Selective Attention, Memory Bias, Cognitive Errors and Symptoms of Anxiety in Youth

The purpose of this study was to examine the linkages among selective attention, memory bias, cognitive errors, and anxiety problems by testing a model of the interrelations among these cognitive variables and childhood anxiety disorder symptoms. A community sample of 81 youth (38 females and 43 males) aged 9-17 years and their parents completed measures of the child's anxiety disorder symptoms. Youth completed assessments measuring selective attention, memory bias, and cognitive errors. Results indicated that selective attention, memory bias, and cognitive errors were each correlated with childhood anxiety problems and provide support for a cognitive model of anxiety which posits that these three biases are associated with childhood anxiety problems. Only limited support for significant interrelations among selective attention, memory bias, and cognitive errors was found. Finally, results point towards an effective strategy for moving the assessment of selective attention to younger and community samples of youth.