Bimodal bilinguals reveal the source of tip-of-the-tongue states

Bilinguals report more tip-of-the-tongue (TOT) failures than monolinguals. Three accounts of this disadvantage are that bilinguals experience between-language interference at (a) semantic and/or (b) phonological levels, or (c) that bilinguals use each language less frequently than monolinguals. Bilinguals who speak one language and sign another help decide between these alternatives because their languages lack phonological overlap. Twenty-two American Sign Language (ASL)-English bilinguals, 22 English monolinguals, and 11 Spanish-English bilinguals named 52 pictures in English. Despite no phonological overlap between languages, ASL-English bilinguals had more TOTs than monolinguals, and equivalent TOTs as Spanish-English bilinguals. These data eliminate phonological blocking as the exclusive source of bilingual disadvantages. A small advantage of ASL-English over Spanish-English bilinguals in correct retrievals is consistent with semantic interference and a minor role for phonological blocking. However, this account faces substantial challenges. We argue reduced frequency of use is the more comprehensive explanation of TOT rates in all bilinguals.     

The evidence for relativism

The aim of this paper is to examine the kind of evidence that might be adduced in support of relativist semantics of a kind that have recently been proposed for predicates of personal taste, for epistemic modals, for knowledge attributions and for other cases. I shall concentrate on the case of taste predicates, but what I have to say is easily transposed to the other cases just mentioned. I shall begin by considering in general the question of what kind of evidence can be offered in favour of some semantic theory or framework of semantic theorizing. In other words, I shall begin with the difficult question of the empirical significance of semantic theorizing. In Sect. 2, I outline a relativist semantic theory, and in Sect. 3, I review four types of evidence that might be offered in favour of a relativistic framework. I show that the evidence is not conclusive because a sophisticated form of contextualism (or indexical relativism) can stand up to the evidence. However, the evidence can be taken to support the view that either relativism or the sophisticated form of contextualism is correct.     

网络成瘾者不同情绪状态下的认知加工特征

取在校大学生454人,通过《青少年病理性互联网使用量表》（Adolescent Pathological Internet Use Scale, APIUS),筛查出网络成瘾者31名为实验组,随机抽取样本中其他非成瘾大学生31人为对照组。使用词首－词尾对应三重意义组合图片60个为实验材料,用人物图片为情绪启动刺激,研究被试在不同情绪状态下的认知选择,记录被试选择词组性质和反应时间。研究发现,所有被试对积极词语的选择最多,对消极词语的选择最少,表现出“趋乐避苦”的认知选择倾向;成瘾组被试对积极词语的选择比对照组少,但是对消极词语选择比对照组多。悲伤启动情况下,成瘾组被试对积极词语的选择比对照组少,但是对消极词语的选择则比对照组多。成瘾组被试对积极信息的选择速度比对照组慢,但是对中性信息和消极信息的选择速度则比对照组快。愉快情绪启动下,成瘾组被试的反应时间比对照组短,在悲伤情绪启动下,成瘾组被试的反应时间比对照组长。悲伤情绪启动下,成瘾组被试对积极词语的反应时间比对照组慢,但是对消极词语的反应时间比对照组快。这些研究结果对网络成瘾的治疗有重要的参考价值。     

糖尿病酮症酸中毒急救措施

辩证思维是最重要的科学思维方法,是指导临床工作的重要科学方法。糖尿病酮症酸中毒（DKA）为糖尿病的急性并发症,是导致糖尿病死亡的主要原因之一。在临床诊治过程中,应科学合理运用辩证思维方法,对DKA快速正确地诊断,积极及时地救治,从而降低糖尿病的病死率,提高患者的生存质量。     

细菌耐药性与抗菌药物的合理应用

面对细菌耐药性的客观存在,分别从四个方面讨论抗菌药物的合理应用,即首先是人类如何对待细菌、真菌等微生物,第二是人类如何对待抗菌药物,第三是人类如何认识细菌耐药性,第四是临床医师如何合理应用抗菌药物以确保最佳疗效及遏制细菌耐药性。笔者提出“六化”,即做到用药适应证规范化,做到感染性疾病病原学诊断常规化,提倡感染性疾病病原学治疗选药合理化,逐步做到推广病原菌耐药性信息监测与反馈制度化,强调抗感染治疗用药方案个体化,评价疗效制度日常化。它是追求抗感染疗效最佳化,遏制病原菌耐药性有效化,力争抗菌药物不良反应最小化的基本措施。     

Tool use as a way to assess cognition: how do captive chimpanzees handle the weight of the hammer when cracking a nut?

Tool use in apes has been considered a landmark in cognition. However, while most studies concentrate on mental operations, there are very few studies of apes’ cognition as expressed in manual skills. This paper proposes theoretical and methodological considerations on movement analysis as a way of assessing primate cognition. We argue that a privileged way of appraising the characteristics of the cognitive abilities involved in tool use lies at the functional level. This implies that we focus on how the action proceeds, and more precisely, on how the functional characteristics of the task are generated. To support our view, we present the results of an experiment with five captive chimpanzees investigating the way how chimpanzees adapt to hammers of various weights while cracking nuts. The movement performed in the hammering task is analyzed in terms of energy production. Results show that chimpanzees mobilise passive as well as active forces to perform the compliant movement, that is, they modulate the dynamics of the arm/tool system. A comparison between chimpanzees suggests that experience contributes to this skill. The results suggest that in tool use, movements are not key per se, but only in as much as they express underlying cognitive processes. Electronic supplementary material  The online version of this article (doi:) contains supplementary material, which is available to authorized users.

青少年病理性互联网使用量表的编制与验证

参照国内外研究并结合我国青少年的实际情况,旨在编制出更适合我国情况的青少年病理性互联网使用量表（Adolescent Pathological Internet Use Scale,APIUS）。探索性因素分析和验证性因素分析的结果表明APIUS由6个维度构成,即突显性、耐受性、强迫性上网/戒断症状、心境改变、社交抚慰、消极后果。APIUS显示了良好的信、效度指标,可以作为我国青少年病理性互联网使用的测量工具     

Incremental Validity of Coping-oriented Marijuana Use Motives in the Prediction of Affect-based Psychological Vulnerability

The present investigation examined whether coping-oriented motives to use marijuana, as measured by the Marijuana Motives Measure (MMM; Simons et al. in J. Couns. Psychol. 45:265–273, 1998), were uniquely related to affect-based psychological vulnerability factors among marijuana users. Participants were 131 adult current marijuana users (72 women, M _age = 20.14, SD = 3.37 years). As hypothesized, after controlling for gender, cigarettes smoked per day, past 30-day marijuana use, total years of marijuana use, and alcohol consumption, coping motives were significantly and incrementally related to negative affect-based psychological vulnerability factors. No other marijuana use motives demonstrated a similar type of relationship to the dependent variables, providing a high degree of explanatory specificity. These data suggest that coping-oriented motives to use marijuana may be an important explanatory construct in better understanding marijuana and psychological vulnerability relations.     

不同动机网络使用者对网络使用线索的注意偏向

以29名信息获取性动机者和21名人际情感性动机者为被试,采用情绪Stroop范式,以网络信息获取线索、网络情感满足线索、一般负性情绪线索和中性线索为刺激材料,考察了不同网络使用动机者对网络相关线索和负性情绪线索的注意加工特性。结果发现,基于信息获取性动机的网络使用者对网络信息获取线索具有显著的注意偏向,而基于人际情感性动机的网络使用者对网络情感满足线索或负性情绪线索具有显著的注意偏向。该研究为解释网络相关线索和负性情绪线索诱发不同动机者上网欲望的认知机制提供了实验证据。     

Impact of a comprehensive safety program on bicycle helmet use among middle-school children

A bicycle helmet program was evaluated in three middle schools using a multiple baseline across schools design. Two of the three schools had histories of enforcement of helmet use. During baseline many students riding their bikes to and from school did not wear their helmets or wore them incorrectly. A program that consisted of peer data collection of correct helmet use, education on how to wear a bicycle helmet correctly, peer goal setting, public posting of the percentage of correct helmet use, and shared reinforcers, all of which were implemented by the school resource officer, increased afternoon helmet use and afternoon correct helmet use in all three schools. Probe data collected a distance from all three schools indicated that students did not remove their helmets once they were no longer in close proximity to the school, and probe data collected in the morning at two of the schools showed that the behavior change transferred to the morning.