Lexical processing while deciding what task to perform: reading aloud in the context of the task set paradigm

The results of two experiments provide the first direct demonstration that subjects can process a word lexically despite concurrently being engaged in decoding a task cue telling them which of two tasks to perform. These results, taken together with others, point to qualitative differences between the mind‘s ability to engage in lexical versus sublexical processing during the time they are engaged with other tasks. The emerging picture is one in which some form of resource(s) plays little role during lexical processing whereas the need for some form of resource(s) during sublexical processing serves to bottleneck performance.     

Squeezing, striking, and vocalizing: Is number representation fundamentally spatial?

Numbers are fundamental entities in mathematics, but their cognitive bases are unclear. Abundant research points to linear space as a natural grounding for number representation. But, is number representation fundamentally spatial? We disentangle number representation from standard number-to-line reporting methods, and compare numerical estimations in educated participants using line-reporting with three nonspatial reporting conditions (squeezing, bell-striking, and vocalizing). All three cases of nonspatial-reporting consistently reproduced well-established results obtained with number-line methods. Furthermore, unlike line-reporting—and congruent with the psychophysical Weber–Fechner law—nonspatial reporting systematically produced logarithmic mappings for all nonsymbolic stimuli. Strikingly, linear mappings were obtained exclusively in conditions with culturally mediated elements (e.g., words). These results suggest that number representation is not fundamentally spatial, but builds on a deeper magnitude sense that manifests spatially and nonspatially mediated by magnitude, stimulus modality, and reporting condition. Number-to-space mappings—although ubiquitous in the modern world—do not seem to be rooted directly in brain evolution but have been culturally privileged and enhanced.     

青少年与同伴的自我表露及其与孤独感的关系

采用问卷法,以655名初高中生为被试,考察青少年与同伴自我表露的发展特点及其与孤独感的关系。结果表明:(1)高中生与不同表露对象以及在不同主题上的自我表露都高于初中生;(2)女生在除身体发育外的6个主题上的自我表露以及与同性最要好朋友的自我表露都高于男生;(3)青少年与最要好同性朋友的自我表露以及在兴趣爱好和身体发育两个主题上的自我表露能显著负向预测其孤独感。     

青少年网络成瘾人格特征研究

本研究采用问卷调查法,对某初级中学363名初中生的网络成瘾状况与人格特征进行研究。结论表明:初中生网络成瘾检出率为5.79%;初中生在网络成瘾存在性别差异,男生比女生更易成瘾。网络成瘾学生与非成瘾学生在《卡特尔十四种人格因素问题》中的忧虑性、自律性、适应性与焦虑性、孤独倾向、身体症状和冲动倾向等因子上差异显著。与非成瘾学生相比,成瘾学生的自制能力较差,成瘾学生可能更经常体验到孤独、焦虑和不满,并且在生活中较容易出现适应不良现象。     

俭：心理学的研究视角

俭是一种关于生活方式的信念, 它促使个体为实现长远的目标, 主动地约束自己的欲望, 限制自己的获取, 有节制地使用资源。俭的内涵丰富, 可从目标和手段两方面分析, 其下又可细分为生存性目标和生存性手段, 发展性目标和发展性手段。对俭的形成有多种解说; 适应说、驱动说和特质说分别从外在约束、内部需求和个体特质三个不同的方面进行过解释。俭是个体因素和环境因素共同作用的结果, 同时又对个体的知、情、意、行具有引导作用。未来研究可对培养个体和社会层面俭的意识和行为的条件和可能的方式进行理论探讨, 也可对不同类型的俭可能对应的心理、行为或者脑机制进行实证研究。     

成败反馈对大学生核心自我评价的影响：任务重要性、外向性的调节作用

该研究以247名大学生为被试,采用2（反馈类型：成功、失败）×2（任务重要性：重要任务、不重要任务）×2（外向性：内向、外向）组间设计探讨成败反馈对大学生核心自我评价的影响,以及任务重要性和外向性在其中的调节作用。结果表明：（1）反馈类型、任务重要性和外向性对核心自我评价变化的主效应及三者的交互作用效应均显著。（2）成败反馈与任务重要性对核心自我评价变化存在显著的交互作用;简单效应分析表明,在失败反馈条件下,执行重要任务被试核心自我评价的下降幅度显著大于执行不重要任务被试核心自我评价的下降幅度。（3）成败反馈与外向性对核心自我评价变化存在显著的交互作用;简单效应分析显示,在失败反馈条件下,外向被试核心自我评价的下降幅度显著小于内向被试。（4）在失败反馈条件下,任务重要性和外向性对核心自我评价的变化存在交互作用。     

模糊决策的认知神经机制

模糊决策是特殊、复杂的风险决策, 还是一种独立的决策类型, 是当前认知神经科学争论的热点问题。一系列的fMRI研究分别得出了不同结论, 但大多数证据支持模糊决策和风险决策之间存在分离, 模糊决策有其独特的决策机制; 模糊决策的认知神经机制也是一个亟待解决的问题。因此本研究拟应用事件相关电位技术、生物反馈技术和基因技术, 采用IGT和GDT任务范式, 通过网络成瘾人群和正常人群的对比研究, 去探索模糊决策和风险决策之间的分离; 应用事件相关电位技术和磁共振技术, 采用IGT范式和选瓶任务范式, 研究模糊决策的认知神经机制; 并从临床角度进一步验证上述结果。该项目的开展, 有助于拓广模糊决策的研究领域和视野, 对理解人类在模糊情境下的决策机制以及模糊决策和风险决策之间的关系, 具有重要的理论意义; 对临床上成瘾人群、脑损伤患者的认知诊断和治疗以及现实中企业和个人的决策, 具有重要的参考价值。     

BTL—QZ—V1．1气质测试系统的修订

修订BTL-QZ-V1．1气质测试系统。对519名12—21岁男女学生进行了测量。结果发现：神经系统特性具有年龄差异,随年龄增长兴奋性、抑制性增强,灵活性、稳定性增高;12～14岁是其快速增长期,14～18岁为慢速增长期,18岁后为稳定期;神经系统的兴奋性、抑制性具有性别差异,男生强于女生;可将气质类型划分为10种,年龄和性别不影响气质类型的分布;除灵活性外,神经系统兴奋性、抑制性和稳定性的重测信度系数在0．6～0．8之间,且达到显著性水平;以80·8神经类型量表为效标,所得相关系数达中等程度。提示BTL-QZ-V1．1气质测试系统的评定需按年龄和性别分组进行,建立的分组标准较为准确科学,信度、效度较高,可以广泛应用。     

The role of strategies in deciding advantageously in ambiguous and risky situations

In decision situations of everyday life, the potential positive or negative consequences of a decision are often specified and the associated probabilities are known or they are principally calculable ("decisions under risk"). On the basis of correlations reported in patient studies, it has been recently proposed that decisions under risk involve strategic components, i.e. calculation of the risk, as well as emotional processes, i.e. processing feedback from previous decisions. However, the potential impact of calculative strategies on decision-making under risk has not been investigated systematically, so far. In the current study, we examined 42 healthy subjects (21 females) with the Game of Dice Task measuring decisions under risk, and a questionnaire assessing strategy application in items comparable to the choices in the Game of Dice Task. In addition, the subjects performed the Iowa Gambling Task, examining decision-making under ambiguity, and a neuropsychological test battery focusing on executive functions. Results indicate that deciding advantageously in a decision-making task with explicit and stable rules is linked to applying calculative strategies. In contrast, individuals who decide intuitively prefer risky or disadvantageous choices in the Game of Dice Task. Applying calculative strategies was correlated with executive functions but not with performance on the Iowa Gambling Task. The results support the view that calculative processes and strategies may improve decision-making under explicit risk conditions.