《恒先》研究综述——兼论《恒先》今后研究的方法

上海博物馆藏战国楚竹书<恒先>作为一部出土文献,其内容与传世道家著作既相关又不同,学术价值极高,短时间内已有大量研究成果问世.但因其文意古奥,学者的解读歧义纷呈,很难统一.本文对研究过程中趋于一致的观点及存在分岐的意见加以整理和概述,展望了今后的研究方向,提出应从<恒先>内部出发、整体出发考虑问题,避免将其和任何一种道家类文献作简单的比附或趋同.     

Synergy of stimulus-driven salience and goal-directed prioritization: Evidence from the spatial blink

In the spatial blink paradigm, participants search for a target of a designated color in a rapidly presented stream of letters at fixation. Target identification is typically impaired if a peripheral distractor appears shortly before the target, inducing a spatial blink, but impairment is observed only when the distractor also shares the sought-for color. Such results reveal an important top-down influence on the capture of attention. In the present experiments, we examined the influence of the bottom-up transients associated with the appearance and disappearance of distractors in the spatial blink paradigm. Onsets and offsets alone are incapable of inducing a spatial blink, but we found that the presence of such transients did enhance the effects of target-color-matched distractors. The results reveal important synergistic interactions between top-down and bottom-up factors involved in attentional capture.     

Performance-based adaptive schedules enhance motor learning

Although investigators have shown that random scheduling of several tasks enhances learning more than blocked scheduling does, the advantages of random scheduling may be limited because it does not take into account the nominal difficulty of each task, the difference in difficulty between tasks, and the skill level of the learner in that type of schedule. The authors propose 2 new algorithms for adaptively determining the nominal difficulty and the number of trials for each task on the basis of both current and delayed performance of the learner (N = 48). The authors tested the adaptive algorithms in a 2 x 2 factorial design, and they show that the algorithms outperform random scheduling when performance is measured on a delayed retention test.     

Developmental trajectories of anxiety symptoms among boys across early and middle childhood

This study examined the developmental trajectory of anxiety symptoms among 290 boys and evaluated the association of trajectory groups with child and family risk factors and children's internalizing disorders. Anxiety symptoms were measured using maternal reports from the Child Behavior Checklist (T. M. Achenbach, 1991, 1992) for boys between the ages of 2 and 10. A group-based trajectory analysis revealed 4 distinct trajectories in the development of anxiety symptoms: low, low increasing, high declining, and high-increasing trajectories. Child shy temperament tended to differentiate between initial high and low groups, whereas maternal negative control and maternal depression were associated with increasing trajectories and elevated anxiety symptoms in middle childhood. Follow-up analyses to diagnoses of preadolescent depression and/or anxiety disorders revealed different patterns on the basis of trajectory group membership. The results are discussed in terms of the mechanisms of risk factors and implications for early identification and prevention.     

阻断内侧前额叶皮质TrkB受体对大鼠认知和海马BDNF表达的影响

脑源性神经营养因子(brain-derived neurotrophic factor, BDNF)广泛参与了个体学习和记忆等认知功能, 通过与其酪氨酸激酶受体(tyrosine kinase, TrkB)特异性结合, 实现其多种神经生化功能。本研究观察了TrkB受体阻断剂ANA-12的慢性内侧前额叶皮质(medial prefrontal cortex, mPFC)注射对大鼠旷场行为、Morris水迷宫空间学习和逆反学习的影响。研究结果表明, mPFC的慢性BDNF阻断显著降低了大鼠在逆反学习测试中的逃离潜伏期和运动距离即增强了大鼠的逆反学习能力, 但不影响其旷场行为和水迷宫空间学习能力。同时, 慢性阻断mPFC-TrkB受体也并未导致大鼠海马BDNF蛋白含量的显著改变。这些结果提示, 对于大鼠的Morris水迷宫空间学习和逆反学习, mPFC-BDNF主要在逆反学习调节中发挥重要作用。这对于进一步探索海马和mPFC在调节个体认知功能中各自的作用及其潜在的相互关系提供了有力的证据和支持。     

作为社会和文化情境的同伴圈子对儿童社会能力发展的影响

基于同伴圈子的相似性假设探讨同伴圈子的形成、圈子社会情境对儿童社会能力发展的促进作用, 以及圈子文化背景对圈子社会化过程的调节作用。选取某城乡结合部一小学3至5年级898名儿童作为被试进行一年的跟踪调查, 其中在第一年当地城市儿童占36.5%, 当地农村儿童占48.8%, 流动儿童占10.4%。学生在第一和第二年都完成《班级戏剧》和《社会认知地图》问卷。研究结果表明：(1)在个体层面上, 圈子成员的社交性、亲社会性、自主性以及同伴接纳显著高于孤立者。城市儿童的自主性显著高于农村和流动儿童, 后两者之间则无显著差异。亲社会性在性别和文化背景方面存在显著的交互作用。(2)儿童会依据社会能力的相似性来组成同伴圈子, 且不同圈子之间存在显著差异。儿童也愿意与不同文化背景的同伴交往, 形成不同类型社会文化背景的同伴圈子。(3)儿童的社交性和自主性随着同伴圈子相应能力的提高而呈正向发展趋势。(4)同伴圈子对个体社交性和自主性发展的影响因圈子所注重的社会文化准则的差异而有所不同。农村－城市圈子比农村－流动圈子对儿童社交性发展的影响明显更大些; 农村圈子的儿童自主性水平更趋于随圈子自主性的提高而正向发展。     

天然函昰禅师的悟道因缘及其禅教并重的宗趣观

天然函昰禅师是明末清初岭南曹洞宗的高僧,在他的弘化下,曹洞宗风大振,僧俗奔凑如云。本文从函孟禅师的悟道因缘及其阐教并、重的宗趣观入手,说明他之所以能在明末清初之际摄受数千僧俗,乃是因其具有深彻的悟境和圆满的见地,非人们所谓“以忠孝节义垂示及门”所能范围。     

青少年学生自我价值感全国常模的制定

自我价值感是个体自我中对人的认知、情绪和行为具有弥漫性影响的一个重要方面 ,也是影响人的心理健康水平的重要方面。本文的目的是使用自编的青少年自我价值感量表建立青少年学生自我价值感(SW )全国常模。对在全国各省市分层随机抽取的 34715大中学生测量结果的方差分析表明 ,在大部分自我价值感维度上 ,存在显著的年级差异和性别×年级交互作用效应。据此给出了男女学生的自我价值感年级常模 ,并进行了常模等级分转换。文中还讨论了青少年学生自我价值感特点。     

论《本义》注文与卷首《卦变图》之相合

明末以来,有不少学者批评朱熹<卦变图>,认为<周易本义>注文与卷首<卦变图>不合.实际上,这些学者未能认识到朱熹<卦变图>是用二维图表表达多维内容,从而误读了这张图.而一旦正确解读朱熹<卦变图>,将会发现<周易本义>注文与卷首<卦变图>符合若契,毫无相悖之处.