语音在汉字语义通达中作用的研究述评

语音在汉字语义通达中的作用是二十多年来心理语言学研究的热点之一。直通假设和形音交互假设是学者们主张的理论观点,它们在语音和语义的相互关系上存在分歧,并分别有各自的实验证据。从比较语音语义激活时间进程、同音字效应、神经心理学与脑成像、语音作用的发展转换这四个方面对过去的研究进行回顾,指出了实验范式和实验材料中存在的问题,并提出结合汉字特点进行研究的思路。     

Rapid stimulatory effects of testosterone upon myotubule metabolism and sugar transport,as assessed by silicon microphysiometry

A considerable number of studies have revealed behavioral circumstances that give rise to small or transient differences in circulating testosterone concentrations; however, careful consideration of androgen physiology leads to the disquieting conclusion that these differences are often unlikely to have much physiologic or behavioral significance. In the present report, we observe that small transients of testosterone secretion could have very rapid anabolic effects on a cultured muscle-derived cell line. Specifically, we have examined the effects of testosterone on metabolism in cultured C2C12 myotubules, using a silicon microphysiometer. The instrument monitors cellular extrusion of protons and acidic metabolites, and such extrusion is directly linked to ATP hydrolysis, thus providing a real-time measure of cellular metabolism. Testosterone caused a small but significant increase in metabolism. The most striking feature of this effect was its rapidity, in that it occurred within 3 hr. This rapid enhancement of metabolism suggested that testosterone might be enhancing substrate uptake even more rapidly. Indeed, we found that testosterone increased 2-deoxyglucose uptake within 1 min. The rapidity of this effect seemed to preclude mediation by classical intracellular steroid receptors. In support of this, we were unable to detect specific intracellular binding of testosterone. These findings show that testosterone can exert rapid anabolic effects on substrate transport and metabolism in myotubules. Should this finding general to muscle in vivo, it suggests that relatively small individual differences in testosterone profiles, in response to various social interactions, may have very real consequence for subsequent muscle physiology. © 1996 Wiley-Liss, Inc.     

线索强度:检验提取练习效应内部机制的重要变量

研究采用提取练习效应研究的经典范式,通过比较学习材料的线索强度对不同学习策略效果的影响来探讨提取练习效应的内部机制。结果发现：（1）当最终测试为线索回忆时,线索强度与学习策略交互作用显著,强线索条件下两组成绩差异不显著,弱线索条件下提取练习组显著高于精细加工组;（2）当最终测试为再认测验时,线索强度与学习策略在虚报率和目标词再认反应时上交互作用显著,精细加工组在弱线索条件下的虚报率显著高于强线索条件,在强弱线索条件下的目标词再认反应时差异不显著;提取练习条件组在强弱线索条件下的虚报率差异不显著,在强弱线索条件下的目标词再认反应时差异边缘显著,弱线索条件下反应时要比强线索条件下更长。上述结果表明材料的线索强度是区分提取练习与精细加工的重要变量,揭示了提取练习的内部加工机制不同于精细加工,反驳了精细提取假设,支持情景语境假设。     

Energizing respites from work: a randomized controlled study on respite interventions

Increasing and new work demands drain employees’ energy resources at work. This 4-week longitudinal field experiment investigated the energizing potential of a respite intervention conducted at the workplace (either a simulated savouring nature intervention or a progressive muscle relaxation intervention). First, growth modelling analyses confirmed a linear trend for the growth of vigour and decline in fatigue across the days of the intervention group, indicating a typical upward resource trajectory. No changes appeared in the control group. Mediation analyses indicated that repeatedly engaging in a daily respite intervention influenced more stable energy levels after the intervention period indirectly through the immediate changes in daily energy levels during the intervention period. Findings suggest that, in some cases, respite interventions may present a useful tool to replenish and build energy resources at work. Implications for using respite intervention in organizational research and practice are discussed.     

自我效能感和认知风格对刻板印象激活效应的影响

通过两个实验考察了自我效能感与认知风格在刻板印象激活效应(个体刻板印象的激活会影响个体随后的行为表现,使之符合所激活的刻板印象)中的作用,初步探讨了刻板印象的激活引发行为改变的内在心理机制。实验1采取单因素被试间实验设计,将被试随机分配到实验组和控制组,接着完成智力测试与自我效能感评价任务。结果发现自我效能感在刻板印象激活效应对于智力测试成绩的影响中起着中介作用。在此基础上,实验2进一步纳入认知风格,首先对被试的握力进行前测,1周后再将被试随机分配到高耐力组和低耐力组进行再测。结果表明:自我效能感在刻板印象激活引发的行为表现中依然起着中介作用。与此同时,虽然场依存的被试更易受刻板印象激活效应的影响,而场独立的被试则不易受到这种情境的影响,但是认知风格未起到中介作用。     

Gender Stereotype Activation versus Lexical Semantic Activation: An ERP Study

It is an open question whether social stereotype activation can be distinguished from nonsocial semantic activation. To address this question, gender stereotype activation (GSA) and lexical semantic activation (LSA) were directly compared. EEGs were recorded in 20 participants as they identified the congruence between prime-target word pairs under four different conditions (stereotype congruent, stereotype incongruent, semantic congruent, and semantic incongruent). We found that congruent targets elicited faster and more accurate responses and reduced N400 amplitudes irrespective of priming category types. The N400 congruency effect (i.e., the difference between incongruity and congruity) started earlier and had greater amplitude for GSA than for LSA. Moreover, gender category priming induced a smaller N400 and a larger P600 than lexical category priming. These findings suggest that the brain is not only sensitive to both stereotype and semantic violation in the post-perceptual processing stage but can also differentiate these two information processes. Further, the findings suggest superior processing (i.e., faster and deeper processing) when the words are associated with social category and convey stereotype knowledge.     

Cross-linguistic phonotactic competition and cognitive control in bilinguals

The current study examines the relation between cognitive control and linguistic competition resolution at the sublexical level in bilinguals. Twenty-one Spanish–English bilinguals and 23 English monolinguals completed a non-linguistic Stroop task (indexing inhibitory control) and a linguistic priming/lexical decision task (indexing Spanish phonotactic-constraint competition during English comprehension). More efficient Stroop performance (i.e. a smaller Stroop effect) in bilinguals was associated with decreased competition from Spanish phonotactic constraints during English comprehension. This relation was observed when nonword targets overlapped in phonotactic constraints and phonological form with preceding cognate primes (e.g. prime: stable (Spanish: estable)/target: esteriors). Findings suggest a link between non-linguistic cognitive control and co-activation of linguistic structures at the sublexical level in bilinguals.     

Differences in numeric,verbal, and spatial reasoning between engineering and literature students through a neurocognitive lens

This study used electroencephalography to investigate the brain activations of college students of various disciplines when they responded to questions in numeric, verbal, and spatial reasoning tasks. In total, 15 engineering students and 15 literature students were recruited in this experiment and were asked to respond to 12 intelligence test questions. The results were as follows: (i) the participants’ brain activations increased in the frontoparietal network during the numeric reasoning task, and the spectral power in the right anterior temporal cortex was generally higher in the literature students than in the engineering students. (ii) Activations of the language network were observed during the verbal reasoning task, and the spectral power in the right-biased posterior frontal cortex was generally higher in the literature students than in the engineering students; by contrast, the spectral power in the left lateral frontal cortex was generally higher in the engineering students than in the literature students. (iii) The participants’ brain activations increased in the spatial processing network during the spatial reasoning task, and the spectral power in the right posterior temporal cortex was generally higher in the literature students than in the engineering students.     

何以近朱者赤、近墨者黑?特质激活理论的缘起、现状和未来

特质激活理论旨在阐明适宜的外部情境如何激活个体的内在特质, 以及这种激活如何促使潜藏的隐性特质表达出显性的行为。文章综述了特质激活理论, 剖析了其从思想诞生到基准模型, 再到拓展模型的两次飞跃, 重点阐释了情境分层、情境特征、激活后果的反馈等系统, 辨析了特质激活的内涵及其与“人-环境”匹配理论、与情境强度理论的异同, 从深化验证、拓展现有理论模型等视角提出未来研究走向。