科学杂志目录中图文版式的效果研究

本研究的目的是探讨读者在阅读科学杂志目录时的眼动特征。实验设计为5(插图位置:居左、居右、交错、居上、居下)×2(插图注解:有、无)×2(文字颜色:黑、蓝)。被试为大学生。使用ASL Model 504眼动仪。结果表明:1.插图位置的注视时间与次数的主效应显著;2.插图注解的注视时间与次数的主效应显著。     

基于眼动研究的孤独症谱系障碍早期预测

孤独症谱系障碍是一组以社交困难为主要特征的神经发育障碍, 涵盖孤独症、阿斯伯格综合症及分类不明确的广泛型精神发育障碍。ASD预测研究集中在神经生理学、遗传学及心理学领域。在心理学研究中, 眼动技术的运用使得相关测量更为细微、精确, 测量过程更严谨, 预测关系更可信。现有的眼动预测主要着眼于注视时间、首视点和扫视反应时指标的研究。这些研究揭示注视面部和眼睛时间短、注视眼睛时间随年龄增长递减、注视追随时间短、注视重复物理性刺激时间长、视觉搜索优势及注意解除困难均可以预测ASD。未来研究应强化眼动特征预测作用的追踪性考证, 加大与其它发展障碍的预测区分, 控制视觉接受能力对眼动行为的影响, 建立综合性预测体系。     

A step forward: Bayesian hierarchical modelling as a tool in assessment of individual discrimination performance

Individual assessment of infants’ speech discrimination is of great value for studies of language development that seek to relate early and later skills, as well as for clinical work. The present study explored the applicability of the hybrid visual fixation paradigm (Houston et al., 2007) and the associated statistical analysis approach to assess individual discrimination of a native vowel contrast, /aː/ - /eː/, in Dutch 6 to 10-month-old infants. Houston et al. found that 80% (8/10) of the 9-month-old infants successfully discriminated the contrast between pseudowords boodup - seepug. Using the same approach, we found that 12% (14/117) of the infants in our sample discriminated the highly salient /aː/ -/eː/ contrast. This percentage was reduced to 3% (3/117) when we corrected for multiple testing. Bayesian hierarchical modeling indicated that 50% of the infants showed evidence of discrimination. Advantages of Bayesian hierarchical modeling are that 1) there is no need for a correction for multiple testing and 2) better estimates at the individual level are obtained. Thus, individual speech discrimination can be more accurately assessed using state of the art statistical approaches.     

腰椎后路非融合技术进展

治疗下腰痛和腰椎管狭窄的的手术方法较多。传统的脊柱融合术被认为是治疗该种疾病的金标准。但越来越多的证据表明,融合后存在腰部活动的限制,脊柱动力学的改变,和邻近节段的加速退变,可导致腰椎不稳和椎管狭窄的复发。在此背景下,探索一种更符合生理需要的手术方法,即非融合技术开始受到大家的重视。本文主要介绍腰椎后路非融合的国内外进展。     

消失文本条件下注视点右侧词对中文阅读影响的眼动研究

采用消失文本范式,考察在中文阅读过程中注视点右侧词对阅读的影响。实验一发现,若读者所注视的双字词及其右侧词在80ms后同时消失,则会对其正常阅读产生干扰。实验二排除了当前注视词消失可能存在的效应,即让右侧词在80ms后单独消失,结果仍发现会干扰正常阅读。另外,在两个实验中均发现了显著的词频效应。这些结果不仅支持眼动的认知控制模型,还证实注视点右侧词的加工对顺利阅读具有重要性。     

Temporal control in fixed-interval schedules

The peak procedure was used to study temporal control in pigeons exposed to seven fixed-interval schedules ranging from 7.5 to 480 s. The focus was on behavior in individual intervals. Quantitative properties of temporal control depended on whether the aspect of behavior considered was initial pause duration, the point of maximum acceleration in responding, the point of maximum deceleration, the point at which responding stopped, or several different statistical derivations of a point of maximum responding. Each aspect produced different conclusions about the nature of temporal control, and none conformed to what was known previously about the way ongoing responding was controlled by time under conditions of differential reinforcement. Existing theory does not explain why Weber's law so rarely fit the results or why each type of behavior seemed unique. These data fit with others suggesting that principles of temporal control may depend on the role played by the particular aspect of behavior in particular situations.     

Specificity and Abstraction of Examples: Opposite Effects on Fixation for Creative Ideation

Fixation is one of the major obstacles that individuals face in creative idea generation contexts. Several studies have shown that individuals unintentionally tend to fixate to the examples they are shown in a creative ideation task, even when instructed to avoid them. Most of these studies used examples formulated with high level of specificity. However, no study has examined individuals’ creative performance under an instruction to diverge from given examples, when these examples are formulated with a high level of abstraction. In the present study, we show that (a) instructing participants to avoid using common examples when formulated with a high level of specificity increases fixation; whereas (b) instructing participants to avoid such examples while using a more abstract level for stating these common examples—such as a categorization of these examples—mitigates fixation and doubles the number of creative ideas generated. These findings give new insights on the key role of categorization in creative ideation contexts.     

不同语境下汉语三声连续变调发生规律初探

采用命名任务,考察真／假词条件下,三声连续变调规律的运用及其对语音提取的影响。实验结果显示．(1)普通话流利者具有三声连续变调意识,变调的发生不受三声字所在语境的影响;(2)三声连续变调的发生影响词汇语音提取,但对类型不同的词,其影响方式存在差异。对阅读错误的分析为讨论提供了进一步证据。     

1秒以上时距判断的ERP研究

以视觉呈现时距信号,采用时间泛化范式要求被试判断5种探测时距(1～4秒)与标准时距(2秒)之间的长度关系,并记录11名大学生在时距判断过程中的事件相关电位(ERP),继而探讨不同探测时距条件下CNV波幅特征变化以及左、右侧额叶在时距判断中的功能。结果发现:1秒、1.42秒以及2秒条件下,CNV波幅峰出现在探测时距结束点,2.84秒、4秒条件下,CNV波幅峰出现在大约2秒处(标准时距);CNV负性翻转至基线位置在1秒、1.42秒、2秒条件下随探测时距的增长而延后,而在2.84秒、4秒两种条件下无显著差异;左、右侧额叶处诱发的CNV波幅峰潜时在2.84秒、4秒探测时距条件下无显著差异,且均在2秒附近。这说明在1秒以上视时距判断中CNV波幅峰反映了基于记忆中标准时距的时距判断的决策过程;CNV负性翻转至基线位置与时距判断的决策阶段存在共变关系,CNV负性翻转至基线位置相当于负荷解脱过程中的一个由负翻正的转折点;左、右侧额叶均参与了时距脉冲累加过程。     

The Impact of Type of Examples on Originality: Explaining Fixation and Stimulation Effects

There are obstacles to creativity: one of them is called fixation effect, the fact that some knowledge about existing or obvious solutions is spontaneously activated and constrains the generation of new solutions. Converging evidence in cognitive psychology has indicated that the ability to generate original ideas can be limited by recently activated knowledge, such as examples of solutions. On the other hand, neuroimaging studies have recently demonstrated that exposure to examples could, on the contrary, have a stimulating effect on originality. To make sense of what seems to be contradictory studies, we hypothesized that two types of examples could have opposite effects on originality: (1) restrictive examples—within the fixation effect—could lead to a reduction in the originality of the solutions, whereas (2) expansive examples—outside the fixation effect—could provoke solutions of higher originality. Results from a total of 160 participants confirmed that the solutions proposed by the group exposed to restrictive examples were less original than those given by the group exposed to expansive examples.