The cortical organization of lexical knowledge: a dual lexicon model of spoken language processing

Current accounts of spoken language assume the existence of a lexicon where wordforms are stored and interact during spoken language perception, understanding and production. Despite the theoretical importance of the wordform lexicon, the exact localization and function of the lexicon in the broader context of language use is not well understood. This review draws on evidence from aphasia, functional imaging, neuroanatomy, laboratory phonology and behavioral results to argue for the existence of parallel lexica that facilitate different processes in the dorsal and ventral speech pathways. The dorsal lexicon, localized in the inferior parietal region including the supramarginal gyrus, serves as an interface between phonetic and articulatory representations. The ventral lexicon, localized in the posterior superior temporal sulcus and middle temporal gyrus, serves as an interface between phonetic and semantic representations. In addition to their interface roles, the two lexica contribute to the robustness of speech processing.     

“Does degree of asymmetry relate to performance?” A critical review

In a recent paper, Chiarello, Welcome, Halderman, and Leonard (2009) reported positive correlations between word-related visual field asymmetries and reading performance. They argued that strong word processing lateralization represents a more optimal brain organization for reading acquisition. Their empirical results contrasted sharply with those of another such large-scale study, by Boles, Barth, and Merrill (2008). We reported negative correlations between asymmetry and performance when both were measured using the same visual lexical tasks. Most recently, within-task negative correlations were also reported by Hirnstein, Leask, Rose, and Hausmann (2010). Here two major differences between studies are explored. Task purity refers to the influence of the same mental processes on both the asymmetry and performance measures, and is arguably maximal in studies measuring both within the same task. The other difference concerns the measurement of asymmetry. Linear corrections for ceiling and floor effects were used by Chiarello et al. and Hirnstein et al., while we used a more appropriate nonlinear one. Their results are difficult to interpret for those reasons. The operation of a third variable to which both asymmetry and performance are positively correlated could also be a factor in the Chiarello et al. findings. The Boles et al. findings reflect a negative correlation between an asymmetric visual lexical process and performance measured within the same task.     

So You Want to Do an Online Study: Ethics Considerations and Lessons Learned

The use of the Internet in conducting psychological research has become increasingly common over the past few decades, as Internet access has become more widespread. Although web-based work has a number of benefits, including lower cost, easy access to large samples, and strict standardization of administration, the limitations must also be considered. Among these limitations are the ethics concerns related to conducting psychological research online. These concerns include limitations in maintaining confidentiality, conducting thorough informed consent, and conducting valid assessment. Particular focus is given to the limitations inherent in conducting a fully automated online study. All of these limitations are discussed in detail through both a review of existing literature and the brief review of a recent study. The recent study identified areas in which participants struggled with completing a fully automated online task. This article discusses the ethics implications of Internet research as well as offering suggestions for researchers who intend to conduct web-based research, and thoughts on future directions as psychology moves forward in web-based research and assessment.     

Narrative vignettes and online enquiry in researching therapist accounts of practice with children in schools: An analysis of the methodology

Aims: This article reviews a research methodology that uses an Internet mediated qualitative, narrative approach to provide in‐depth analysis of vignettes. The research sought to investigate the ways in which dramatherapists, based in different countries, understood the nature of therapeutic change in their work with children. Method: The article describes a qualitative approach to the generation of data by a combination of therapist‐authored vignettes, live, synchronous Internet mediated communication (aMSN Messenger) and email. Participants kept a diary of their response to the research and the article draws on this data within its analysis of the methodology. Findings: Samples of the data are used to analyse how such innovative, online methodology can develop effective access and relationships with geographically dispersed participants and as an effective way of investigating therapist practitioners' understanding of their practice.     

Self-esteem,personality and Internet Addiction: A cross-cultural comparison study

Previous work from Germany and Austria highlighted the importance of personality and excessive private Internet usage for Internet Addiction (IA). In a cross-cultural approach we tried to replicate a negative association between IA and the personality trait of self-directedness in Bulgaria, Germany, Spain, Colombia, China, Taiwan and Sweden and as well the finding that persons with a damaged self-esteem have a higher proclivity for becoming Internet addicted in Bulgaria, Spain, Germany and Colombia. In total N = 989 took part in the study. Results show that the personality dimension self-directedness was negatively correlated to the IA score of the participants in all samples. In contrast, no interaction effect between implicit and explicit self-esteem on IA could be observed.     

Psychotherapie und Internet

Zusammenfassung  Die Außendarstellung im Internet ist wichtig und in der Zukunft unverzichtbar. Jedoch hat die Liberalisierung des Werberechts der freien Berufe keineswegs zur absoluten Schrankenlosigkeit geführt. Vielmehr sind die zu beachtenden Regeln auf verschiedene Gesetze und Rechtsgebiete verstreut, so dass ohne fachkundige Hilfe—etwa durch die Kammern oder durch juristische Beratung—die Selbstdarstellung im Internet schnell zu einem bösen Erwachen führen kann.

青少年大五人格对网络成瘾的影响:家庭功能的中介作用

目的:探究家庭功能在人格特征与网络成瘾之间的中介作用。方法:973名中学生被试完成基本人口学问卷、网络成瘾量表、人格五因素问卷、家庭功能评定量表。结果:(1)人格特征可以显著预测网络成瘾。其中,情绪性人格可以显著正向预测网络成瘾,责任心、宜人性显著负向预测网络成瘾。(2)家庭功能在情绪性、责任心对网络成瘾的影响具有部分中介作用、在宜人性对网络成瘾的影响具有完全中介作用。结论:在治疗中,可针对网络成瘾者的家庭功能进行积极干预,从而减轻其成瘾症状。     

青少年亲子关系、消极社会适应和网络成瘾的关系:一个有中介的调节作用

为探讨亲子关系、消极社会适应和网络成瘾的关系,采用问卷法对六个城市共2324名中学生进行研究。结果表明：（1）冲突型青少年网络成瘾倾向得分最高,依恋型青少年网络成瘾倾向得分最低;（2）消极社会适应在亲子依恋和亲子冲突对网络成瘾的预测中均起部分中介作用;（3）消极社会适应的中介作用受到性别的调节。这一研究结果揭示了积极和消极亲子关系对网络成瘾的共同作用机制,为从家庭层面干预和预防青少年网络成瘾状况提供了参考。     

发展性计算障碍儿童的数量转换缺陷

本研究拟考察发展性计算障碍儿童的认知缺陷成因。实验1要求被试在三种形式(点/点,数/数,点/数)下进行数量比较,实验2仅将点集替换为汉字数字词。结果表明障碍组和正常组在数/数、点/数和汉字/汉字比较任务上的成绩存在显著差异,而在点/点和汉字/汉字比较上没有差异。据此推论,计算障碍儿童符号加工能力受到损伤,符号与非符号数量转换能力存在缺陷,但非符号加工能力和不同符号间数量转换没有缺陷,支持语义提取缺陷假设。