汉字部件信息数据库的建立──部件和部件组合频率的统计分析

用ＦｏｘＢＡＳＥ语言统计了６７６３个基本汉字集合中的部件和部件组合的频度信息,建立了“部件数据库”和“部件组合数据库”。前者包含５６７个部件;后者包含汉字中实际存在的７５８３个两部件组合。统计结果表明部件和部件组合均呈偏态分布,绝大多数的频率很低。这两个数据库不仅可应用于研究汉字认知中整体和局部的关系、汉字的学习和记忆,而且也可供汉字学的定量研究、中文信息的计算机处理研究参考。     

Reduction of faking with the use of a forced-choice personality test: Cross-cultural comparisons between South Korea and the United States

Forced-choice format tests have been suggested as an alternative to Likert-scale measures for personnel selection due to robustness to faking and response styles. This study compared degrees of faking occurring in Likert-scale and forced-choice five-factor personality tests between South Korea and the United States. Also, it was examined whether the forced-choice format was effective at reducing faking in both countries. Data were collected from 396 incumbents participating in both honest and applicant conditions (N_SK = 179, N_US = 217). Cohen's d values for within-subjects designs (ds_within) for between the two conditions were utilized to measure magnitudes of faking occurring in each format and country. In both countries, the degrees of faking occurring in the Likert-scale were larger than those from the forced-choice format, and the magnitudes of faking across five personality traits were larger in South Korea by from 0.07 to 0.12 in ds_within. The forced-choice format appeared to successfully reduce faking for both countries as the average ds_within decreased by 0.06 in both countries. However, the patterns of faking occurring in the forced-choice format varied between the two countries. In South Korea, degrees of faking in Openness and Conscientiousness increased, whereas those in Extraversion and Agreeableness were substantially decreased. Potential factors leading to trait-specific faking under the forced-choice format were discussed in relation to cultural influence on the perception of personality traits and score estimation in Thurstonian item response theory (IRT) models. Finally, the adverse impact of using forced-choice formats on multicultural selection settings was elaborated.     

汉语音节累积词频对同音字听觉词汇表征的激活作用

汉语同音字音节的累积词频是同音单字词的具体词频之和, 即音节作为词被听到的频数, 也称为音节词频。它对词汇通达的作用还没获得一致看法。本文探讨听觉词汇通达中同音字表征的激活如何受累积词频的影响, 构成累积词频的具体词频和同音字数又会在其中起何作用。研究采用跨通道的音-字同音判断范式和配套的协方差分析分离出听觉的词汇表征激活作用。实验1固定同音字数, 同时变化累积词频和具体词频(其中具体高、低频同时也是同音字族内的高、低频), 结果发现具体词频的提高对表征激活有积极作用; 累积词频的提高仅在错误率上产生微弱的抑制作用, 而这个微弱作用可以归结为同音字族内高频字表征的激活对低频字表征的抑制。实验2固定具体词频, 同时变化累积词频和同音字数, 结果发现同音字数增加对表征激活产生抑制, 没有发现累积词频的作用。两个实验的结果说明, 音节累积词频对同音字的听觉词汇表征激活不起确定作用, 能够起作用的是同音字族内的具体词频和同音字数; 但同音字数变化的抑制作用仅在具体词频不变时才发生, 因此起决定作用的是同音字族内高频字表征激活和低频字表征抑制的机制。     

图片命名中词汇频率效应的眼动研究

在延时命名范式的基础上,通过控制熟悉性并运用连续图片命名的眼动记录技术,考察图片的注视时间,将词汇提取的过程单独地呈现出来。实验结果表明,在控制熟悉性及延时命名的条件下,图片名称的频率仍影响着图片的注视时间,表现出频率效应,但对出声输出的快慢没有影响,从而进一步证实了图片命名频率效应的“词汇通达假设”。     

自我参照加工中的频率作用二重性

本实验在三种加工水平下考察了自我参照加工和频率作用二重性的关系,实验分为回忆部分和再认部分,三组被试分别进行自我参照、他人参照和一般语义加工,再认测验包括R／K判断。结果发现,在一般的回忆和再认模式下,自我参照加工中的频率作用二重性依然存在,即回忆中高频词的成绩优于低频词,而再认中低频词的成绩优于高频词;但在R／K判断上,对于低频词,无论哪一种参照加工的R都大于K,但对于高频词,只有自我参照加工的R仍大于K。最后,本文从自我参照加工的独特性对结果进行了讨论。     

Word frequency influences on the list length effect and associative memory in young and older adults

Many studies show that age deficits in memory are smaller for information supported by pre-experimental experience. Many studies also find dissociations in memory tasks between words that occur with high and low frequencies in language, but the literature is mixed regarding the extent of word frequency effects in normal ageing. We examined whether age deficits in episodic memory could be influenced by manipulations of word frequency. In Experiment 1, young and older adults studied short and long lists of high- and low-frequency words for free recall. The list length effect (the drop in proportion recalled for longer lists) was larger in young compared to older adults and for high- compared to low-frequency words. In Experiment 2, young and older adults completed item and associative recognition memory tests with high- and low-frequency words. Age deficits were greater for associative memory than for item memory, demonstrating an age-related associative deficit. High-frequency words led to better associative memory performance whilst low-frequency words resulted in better item memory performance. In neither experiment was there any evidence for age deficits to be smaller for high- relative to low-frequency words, suggesting that word frequency effects on memory operate independently from effects due to cognitive ageing.     

The role of vowel formant frequencies and duration in the perception of foreign accent

ABSTRACT

This study used synthesis to manipulate vowel formant frequencies and durations to evaluate their role on foreign accent perception. Formant frequencies and durations for the vowels /æ/, /?/, and /a/ were manipulated with changes toward and away from the mean native English and Spanish-accented values from Sidaras, S. K., Alexander, J. E. D., & Nygaard, L. C. (2009. Perceptual learning of systematic variation in Spanish-accented speech. The Journal of the Acoustical Society of America, 125, 3306–3316). Native listeners rated these stimuli on degree of accentedness and comprehensibility. Gradual changes in formant frequencies from native to non-native values impacted /a/ negatively, /?/ positively, and /æ/ minimally. Effects of vowel duration on either type of ratings were small and restricted to vowel-specific interactions. The current findings suggest that vowel formant frequencies are primary cues to foreign accent. Their influence depends upon whether or not frequencies could reflect alternative vowel categories.     

Young children's affective decision-making in a gambling task: Does difficulty in learning the gain/loss schedule matter?

This research investigated the development of affective decision-making (ADM) during early childhood, in particular role of difficulty in learning a gain/loss schedule. In Experiment 1, we administrated the Children's Gambling Task (CGT) to 60 Chinese children aged 3 and 4, replicating the results obtained by Kerr and Zelazo [Kerr, A., & Zelazo, P. D. (2004). Development of “hot” executive function: The Children's Gambling Task. Brain and Cognition, 55, 148–157]. In Experiment 2, the CGT was modified to make it easier for young children to learn the gain/loss schedule by increasing delayed loss frequency and magnitude in the disadvantageous deck, and a larger sample (181 children aged 3–5) was assessed. Age-differences between 3- and 4-year-olds, rather than 4- and 5-year-olds, showed that ADM develops rapidly between 3 and 4 years. The reduction of the difficulty in learning the gain/loss schedule provides the basis for an account of the development of young children's AMD.     

Dream recall frequency and openness to experience: a negative finding

The question of whether personality dimensions explain the interindividual differences in dream recall frequency has often been investigated by dream researchers. Previous research has shown that traits such as absorption, hypnotic susceptibility and thin boundaries which are related to the openness-to-experience factor of the Five-Factor-Model of personality correlate substantially with dream recall frequency. The present study, however, was unable to demonstrate a relationship between openness and the six facet scales and dream recall frequency. It may be hypothesized that other factors such as visual memory, sleep behavior or creativity explain the interindividual differences in dream recall.     

The explicit learning of new names for known objects is improved by dexamphetamine

A randomised, double-blind, placebo-controlled, between subjects study design (N=37) was used to investigate the effects of dexamphetamine on explicit new name learning. Participants ingested 10mg of dexamphetamine or placebo daily over 5 consecutive mornings before learning new names for 50 familiar objects plus fillers. The dexamphetamine group recognised and recalled the new names more accurately than the placebo group over the 5 days and 1 month later. Word learning success was not associated with baseline neuropsychological performance, mood, cardiovascular arousal, or sustained attention. These results may have implications for the pharmacological treatment of acquired naming difficulties.