Effect of language proficiency and executive control on verbal fluency performance in bilinguals

We use a time-course analysis to examine the roles of vocabulary size and executive control in bilinguals’ verbal fluency performance. Two groups of bilinguals and a group of monolingual adults were tested in English with verbal fluency subtests from the Delis–Kaplan Executive Function System. The two bilingual groups were equivalent in their self-rated English proficiency but differed in levels of receptive and expressive vocabulary. We hypothesized that the difference between the two bilingual groups in vocabulary and between the monolingual and bilingual groups in executive control would lead to differences in performance on the category and letter fluency tests and dissociate the roles of vocabulary knowledge and executive control in verbal production. Bilinguals and monolinguals performed equivalently in category fluency, but the high-vocabulary bilingual group outperformed both monolinguals and low-vocabulary bilinguals in letter fluency. An analysis of the retrieval time-course functions in letter fluency showed dissociable effects of resources available at the initiation of the trial, considered to reflect vocabulary size, and ability to monitor and retrieve new items using a novel phonemic-based word searching strategy, considered to reflect executive control. The difference in slope of the best-fitting curves reflected enhanced executive control for both bilingual groups compared to monolinguals, whereas the difference in the starting point of the logarithmic functions reflected higher levels of vocabulary for high-vocabulary bilinguals and monolinguals compared to low-vocabulary bilinguals. The results are discussed in terms of the contributions of linguistic resources and executive control to verbal performance.     

学生智力与反应时的关系的教育神经心理学研究

通过比较不同智商者的大脑两半球的反应时发现,小学生中智力较高者大脑西半球的反应时较智力较低者明显为短,说明智力水平与大脑反应明显相关;选择反应时与智力水平的关系较简单反应时尤为密切。但正确反应率在两组之间未见有明显差异。     

Dynamic self‐representation of interdependent Chinese: The effect of bicultural experience

The process of globalisation has increased the opportunity for Chinese individuals to utilise influences from other cultures that differ from their own collectivistic culture. The explorations of the impact of acculturation on Chinese individuals' self‐construals have become intriguing. Thus, we recruited German‐Chinese (N = 192) people who live in Germany and had direct bicultural experiences, as well as Mainland‐Chinese (N = 192) people who live in Mainland China and had internalised a second culture through more indirect means of exposure. We investigated their accessibility to both interdependent and independent cultural frameworks using temporal self‐construal priming. The results showed that priming effects were observed in both cultural groups. However, the self‐construals of the German‐Chinese participants were more flexible than those of Mainland‐Chinese under self‐construal priming. Also, the results suggested that women were easier to be influenced by direct bicultural experiences, due to their private and collective self were different between the two cultures. These findings provide evidence regarding the opinion that individuals could use influences from more than one culture. More importantly, these results suggest that the acculturation induced by direct bicultural experiences facilitates cultural frame switching.     

The location-, word-, and arrow-based Simon effects: An ex-Gaussian analysis

Task-irrelevant spatial information, conveyed by stimulus location, location word, or arrow direction, can influence the response to task-relevant attributes, generating the location-, word-, and arrow-based Simon effects. We examined whether different mechanisms are involved in the generation of these Simon effects by fitting a mathematical ex-Gaussian function to empirical response time (RT) distributions. Specifically, we tested whether which ex-Gaussian parameters (μ, σ, and τ) show Simon effects and whether the location-, word, and arrow-based effects are on different parameters. Results show that the location-based Simon effect occurred on mean RT and μ but not on τ, and a reverse Simon effect occurred on σ. In contrast, a positive word-based Simon effect was obtained on all these measures (including σ), and a positive arrow-based Simon effect was evident on mean RT, σ, and τ but not μ. The arrow-based Simon effect was not different from the word-based Simon effect on τ or σ but was on μ and mean RT. These distinct results on mean RT and ex-Gaussian parameters provide evidence that spatial information conveyed by the various location modes are different in the time-course of activation.     

Parental Rearing Behaviors and Adolescent’s Social Trust: Roles of Adolescent Self-esteem and Class Justice Climate

Research on the antecedents and underlying mechanisms of the formation of adolescent social trust is scant. Family and school are two major environments in which adolescents become socialized. The current study examined the effect of parental rearing behaviors (rejection, emotional warmth and overprotection) on adolescent social trust, exploring the mediating role of adolescent self-esteem and the multilevel moderated role of the Level 2 variable class justice climate. The sample included 612 (12–16 years old) middle school students in China. Participants completed the s-EMBU, the Rosenberg Self-esteem Scale, Rosenberg’s Faith in People Scale and the perceptions of class justice scale, along with other control variables. The results suggested that parental rearing behaviors significantly predicted adolescent social trust, regardless of adolescent gender or age. Additional mediation analysis suggested that parental rearing behaviors had both direct effects on adolescent social trust and indirect effects through adolescent self-esteem. Further multilevel structural equation modeling indicated that class justice climate moderated the effect of parental rejection on adolescent self-esteem. The findings suggest that family and school practice jointly shape adolescents’ social trust. How parents treat their children has a huge influence on the degree to which their children trust other people. In addition, perceived class justice could buffer the harmfulness of negative parental rearing behaviors.     

Age-related differences in affective and cognitive empathy: self-report and performance-based evidence

The correlation between age and empathy is not clear, with prior findings yielding mixed and inconsistent results. Here, we distinguished between two aspects of empathy and respectively investigated the effects of age on the affective and cognitive facets of empathy using a self-report measure (interpersonal reactivity index, IRI) and performance-based tasks (viewing films). The results showed that older adults manifested age-related deficits in both trait and state cognitive empathy, with the latter being positively associated with memory. Otherwise, the overall affective empathy increased in the elderly, but the age-related differences in affective empathy may be qualified by the valence of the film clips. Specifically, older participants showed more empathic concern (EC) and less personal distress (PD) to other people’s emotions than the younger participants for the distress film. Interestingly, for the amusing film, older participants demonstrated more EC and PD. Overall, the two aspects of empathy have different development trajectories.     

The influence of self-construals on the ERP response to the rewards for self and mother

Individual self-construal (independent vs. interdependent) could be temporarily modulated by the priming effect. Our previous studies have found that when Chinese participants gambled for mother and for self, outcome feedback evoked comparable neural responses between two conditions. However, it remains unclear if the response to rewards for mother and for self would differ after independence self-construal priming. In this study, we manipulated participants’ self-construal (independent vs. interdependent) before a simple gambling task. The event-related potential (ERP) results reveal that when an interdependent self-construal was primed, the participants exhibited a comparable feedback-related negativity (FRN) elicited by outcome feedback for self and for mother. In contrast, independent self-construal priming resulted in a greater FRN elicited by outcome feedback for self than for mother. Meanwhile, the P3 component was insensitive to self-construal manipulation. These findings indicate the modulation effect of self-construal priming on the response to rewards for others.     

抑制控制在被动与主动语码切换中的作用

本研究探讨被动与主动语码切换过程中的语码切换代价及抑制控制的作用。该实验以阿拉伯数字为实验材料,随机选取高校汉-英双语大学生为被试,要求被试完成数字命名任务。结果表明,被动语码切换过程存在语码切换代价且代价对称,这一现象既可以用特定语言选择假说解释,也可以用抑制控制模型来解释,但未能直接支持抑制控制真正参与被动语码切换,有待进一步研究; 主动语码切换过程中,目标语言为汉语时存在语码切换代价,而目标语言为英语时不存在语码切换代价,可能是抑制控制机制与词汇选择策略共同参与的结果。     

Moral Evaluations of Lying for One's Own Group

This study investigated the development of moral judgments of blue lies, which occur when a speaker makes false statements to benefit a group of which he or she is a member. We investigated this issue in China, where there is substantial emphasis on the nature of children's associations with groups they belong to. Participants ranged in age from 9 to 17, and we asked them to evaluate lies that were told to benefit a team representing a speaker's class, school, or country. Judgments varied systematically as a function of age, with the 17‐year‐olds rating lying for any form of collective less negatively than did the younger age groups. In addition, across the age groups, children's affinity tended to shift from smaller groups to broader and more abstract collectives: 9‐ and 11‐year olds were least critical of blue lies told to benefit a speaker's class, 13‐year olds were least critical of blue lies told to benefit a speaker's school, and 17‐year olds were least critical of blue lies told to benefit a speaker's country. Copyright © 2015 John Wiley & Sons, Ltd.