“多少”概念发展的研究

采用数量判定任务,分别用2～30和5～100范围内点子图为刺激,研究个体“多”和“少”概念的发展。结果发现：在5～100点子条件下,随年龄的增长,个体“多”概念的判断值、“少”概念的判断值、“多”“少”概念的临界值均显著增大;7～9岁是个体“多少”概念发展的转折期;个体对“多少”概念的认知具有相对性;在本实验的两种条件下,随年龄增长,个体“多”概念的判断值、“少”概念的判断值、“多”“少”概念的临界值逐渐趋于刺激点子数最大值的2/3、1/3、1/2,“多”概念与“少”概念判断的不确定距离逐渐趋于刺激点子数最大变化范围的1/3或略小于1/3。     

一种多级评分的广义认知诊断模型

认知诊断是近些年教育测量研究中的热点,大多数的认知诊断模型仅适用于0～1评分的情况.本文提出一种有多个潜变量多个滑动参数的多级评分认知诊断模型——GP-D1NA,只要由评分标准和知识状态能确定理想反应模式,就可以利用此方法进行认知诊断分析.在该方法中,我们给出项目滑动矩阵的概念,将被试的观测得分均看成由某个理想得分的滑动,并采用EM算法估计滑动矩阵.在模拟研究中,采用每掌握一个属性得1分的评分标准,结果表明线性型、收敛型、发散型、无结构型和独立型五种属性层级结构均有较高的判准率.     

Bidirectional Mediating Role of Loneliness in the Association Between Shyness and Generalized Pathological Internet Use in Chinese University Students: A Longitudinal Cross-Lagged Analysis

Abstract

This 1-year longitudinal study examined the bidirectional mediating role of loneliness in the association between shyness and generalized pathological Internet use (GPIU) in a sample of 291 Chinese university students (143 men, mean age =?19.07?years). A fully cross-lagged panel design was used in which shyness, loneliness, and GPIU were assessed at 3 time points separated by 6-month intervals (named T1, T2, and T3). The results indicated that relationships among shyness, loneliness, and GPIU were dynamic and bidirectional. Specifically, T1 shyness positively predicted increased T2 loneliness, T2 shyness positively predicted increased T3 loneliness, and T2 loneliness positively predicted increased T3 shyness. Additionally, T1 GPIU positively predicted increased T2 loneliness, T2 GPIU positively predicted increased T3 loneliness, and T2 loneliness positively predicted increased T3 GPIU. Loneliness was found to play a bidirectional mediating role in the association between shyness and GPIU. Specifically, T1 shyness and T3 GPIU were mediated through increased loneliness at T2, and T1 GPIU and T3 shyness were mediated through increased loneliness at T2. Furthermore, relationships among shyness, loneliness, and GPIU were the same across the 2 groups, with the strength of relationships being stronger for men.     

Exposure to violence reduces empathetic responses to other’s pain

Past researches showed that empathy for pain not only triggers a resonance mechanism between other and self, but also is modulated by contextual factors. Using functional magnetic resonance imaging, the present study demonstrated that short-term media violence exposure reduced both pain ratings and also the activation of anterior insula and anterior mid-cingulate cortex to other’s pain. Thus, violence exposure modulated empathic responses to other’s pain based on a physiological desensitization.     

Morphological study of micropits formed by anodic etching of an Al-Pd-Mn icosahedral quasicrystal

Faceted micropits obtained by electrochemical etching of a single quasicrystal of an Al-Pd-Mn icosahedral phase have been examined by optical and electron microscopy. Anodic etching of the flat surface of a fivefold plane in a solution composed of CH₃OH and HNO₃(3:1 in volume ratio) reveals a variety of icosahedrally faceted micropits which originated from pre-existing microvoids and etch pits of pentagonal pyramid shape due to the other origins, probably structural defects inside the specimen. As the dissolution progresses, the micropits make successive changes in their shapes, ending in pentagonal pyramids before they vanish.     

当代情绪发展理论述评

本文从情绪的定义、情绪发展的实质、情绪在个体发展中的作用等方面,评述了当代比较有影响的情绪发展理论不同的情绪发展观。这些情绪发展理论有生物观点、机能主义观点、认知观点、组织观点和社会文化观点。     

再认中意识和无意识的贡献大小--兼论内隐记忆的抗老化现象

本研究以探索记忆中意识和无意识贡献大小为目的,采用年龄和材料两个自变量,年龄分中青年和老年两组,被试均为23人,材料分文字和非文字两种。实验通过PDP的包含和排除测验计算意识和无意识的贡献大小。结果发现：(1)意识在不同年龄和不同材料的记忆中所起作用的差异极为显著;(2)无意识在文字材料的记忆中所起作用的差异极为显著;(3)无意识在非文字材料和不同年龄的记忆中所起的作用的差异均不显著。由此推论,老年人记忆中无意识贡献并未下降。这似说明,老年人内隐记忆并未老化。     

元认知与学习动机关系的研究

对于元认知与学习动机之间的关系,已有研究采用相关分析、回归分析的方法进行了初步探讨,但无论是相关还是回归都不能使我们清楚地了解两者之间的相互作用。本研究的目的即是运用路径分析的方法对这一问题进行较为深入的探讨。路径分析表明,动机变量对元认知活动具有“供能”的作用;动机变量对元认知的影响有的是直接发生的,如考试焦虑、目标定向,有的则是以其它变量为中介而间接发生的,如动机强度、学业自我概念。     

两种人本心理学的辩论

该文沿着JohnRowan(1989)提出是否有两种人本心理学这一问题 ,追溯了人本心理学内部分歧的由来 ,即罗洛·梅与罗杰斯在 2 0世纪 80年代初有关人性问题的争论 ,以及 1986年罗洛·梅对超个人心理学的批评。文章着重介绍了维尔伯 (KenWilber)对这一领域的分歧所做的全面分析 ,指出了两种人本心理学在一些基本问题上的不同立场。这两种心理学就是以罗洛·梅为代表的存在主义取向的人本心理学和以马斯洛、罗杰斯、维尔伯为代表的从自我实现走向自我超越的人本心理学     

近十年国外罗夏测验攻击变量研究综述

用罗夏测验测量攻击有助于了解个体的攻击性冲动 ,也有助于外显攻击行为的预测和控制。近十年国外文献中有关研究者主要有Holt、Exner、Gacono和Meloy。综述结果表明 ,他们提出的大多数攻击变量都有明确的定义 ,其实证研究也获得了一些支持。但也可以看到 ,目前的研究依然存在不少问题 :(1 )变量的定义有重复、内容有交叉 ;(2 )变量的分类标准不唯一 ;(3 )某些变量的使用和操作欠方便。因而 ,这些变量的定义、分类和使用都还有待于进一步研究支持。