Three Subtypes of Internalizing and Externalizing Behaviors in Chinese Adolescents: Results of a Latent Class Analysis

Using latent class analyses (LCA), the present study aimed to test whether meaningful subtypes of internalizing and externalizing behaviors could be found among Chinese community-based adolescents. A total of 5244 adolescents, ages 11–18 years (M?=?15.11, SD?=?1.79) recruited from 16 Chinese middle schools completed the Chinese version of the Strengths and Difficulties Questionnaire (SDQ-C). We examined the data using Latent Class Analysis to identify subtypes of internalizing and externalizing behaviors among the adolescents. Multivariate Logistic regression was subsequently implemented to ascertain the relationships between latent classes and demographic covariates. Three distinct subtypes were uncovered: a high-risk group, a middle-risk group and a low-risk group; the three subtypes accounted for 19.8, 31.1, and 49.1 % of the total sample variance respectively. Youth with elevations in one behavior type were likely to have elevations in the other behavior type. Further analyses revealed that compared to the low-risk group, the adolescents from the high-risk group and middle-risk groups were female and older. Significant heterogeneity in internalizing and externalizing behaviors was revealed in this Chinese adolescent’s sample. Profiling behavior problems patterns is potentially useful as a first step in developing tailored prevention and intervention programs. Suggestions for future research, including cross-national studies, and implications for mental health professionals were discussed.     

以“1”为基础标准揭示数和数学中部分和整体关系的系统性教学实验

本实验是一个旨在验证作者以前研究结果的系统性教学实验。作者运用以“1”为基础标准揭示数和数学中部分和整体关系这一原则,重新编写现用小学教材。实验是在黑山北关实验学校一年级进行的。学生均为就近入学的小县镇儿童。一年的实验教学结果表明:在这样一种知识结构下,在同一教学时间内,实验班学生比对比班多学了近150课时的内容;实验班的历次考试成绩均接近或稍高于对比班;在学习迁移能力等方面,实验班均高于对比班。这初步表明,上述原则可以较有效地应用于小学数学教学。     

关于儿童部分与整体关系认知发展的实验研究——6—7岁儿童用非除法运算解答包含除的实验

部分与整体的关系是事物的普遍关系的一种反映。儿童对表现在小学数学中的部分与整体关系的认知发展,是一个值得研究的课题。本研究对6—7岁儿童理解包含除的数量关系的认知特点,进行了调查。结果表明,6—7岁儿童用非除法运算解答二十以内的不同方式提问的包含除的问题,已达到一定的水平。对包含除的数量关系在理解上的差异,依赖于对数的部分与整体关系,即对总数、每份数和份数及其相互关系的掌握。     

胼胝体分步全切病人左右侧命名的不对称

以一位第一次进行胼胝体前部切开,第二次作后部切开的胼胝体全切断患者为被试,在第二次手术前后进行了Ⅰ。左右单侧操作检查,和Ⅱ。两半球之间感觉信息传递两类神经心理学实验。结果提示:后部切断前,左右侧操作没有明显的差异。同时,视觉和触觉的感觉信息的传递基本正常。在后部切断后,命名作业呈右视野和右手优势,图形临摹左手似乎较好,这时视觉和触党的感觉信息的传递发生了障碍。左视野和左手命名高于随机水平,讨论了这一结果与右脑语言的关系。方位比较等多个实验提供了支持两半球协同活动理论的证据。     

中国人眼光谱相对视亮度函数研究Ⅱ.明视函数

在可见光谱范围内(380nm-780nm)。人眼对不同波长的辐射,即各种颜色光,具有不同的感受性。一般说来,人眼对可见光谱中黄绿色的感受性最高,对光谱两端的红色和紫色,感受性就低得多。人眼对光谱不同区域视觉感受性不同的这种特点,通常叫作光谱视亮度或光谱感受性,并以其函数来表征,称为光谱相对视亮度函数。它的图示,就是     

中国人眼光谱相对视亮度函数的研究

问 题 人眼对光谱各波长的灵敏度,是产生一种阈限反应或主观相等亮度所需要的辐射能量的倒数。它们原称光谱视亮度,现在我们称之为光谱相对视亮度。即使是等能光谱,各波长引起的相对视亮度也很不相同。具体测量时除绝对阈限法外,一般常用匹配法:使人眼将不同波长的光谱色光分别和一个固定强度的白色标准光作亮度匹配,达     

Maximum information per time unit designs for continuous online item calibration

Previous designs for online calibration have only considered examinees’ responses to items. However, the use of response time, a useful metric that can easily be collected by a computer, has not yet been embedded in calibration designs. In this article we utilize response time to optimize the assignment of new items online, and accordingly propose two new adaptive designs. These are the D-optimal per expectation time unit design (D-ET) and the D-optimal per time unit design (D-T). The former method uses the conditional maximum likelihood estimation (CMLE) method to estimate the expected response times, while the latter employs the nonparametric k-nearest-neighbour method to predict the response times. Simulations were conducted to compare the two new designs with the D-optimal online calibration design (D design) in the context of continuous online calibration. In addition, a preliminary study was carried out to evaluate the performance of CMLE prior to its application in D-ET. The results showed that, compared to the D design, the D-ET and D-T designs saved response time and accrued larger calibration information per time unit, without sacrificing item calibration precision.     

杏仁体与情绪及感觉功能的关系

近来研究表明杏仁体与感觉、情绪和记忆关系密切。对恐惧条件反射的研究发现杏仁体是情绪活动的关键性结构;导致恐惧条件反射的细胞及分子机制研究征实杏仁体具有情绪学习与记忆机能;杏仁体在向中感觉信息的筛选和凋制中具有显著作用和重要意义。本文将综述这方面的进展。     

道教界“纪念汶川特大地震一周年暨祈福超度感恩法会”在四川举行

5月12日,由四川省道教协会主办、德阳市道教协会承办的"纪念汶川特大地震一周年暨祈福超度感恩法会"在绵竹市严仙观举行.来自四川、北京、广东、贵州、重庆、辽宁、山西等省市和香港、台湾地区,以及新加坡、马来西亚等国家的道教界人士400余人参加了此次活动.全国人大常委、中国道教协会副会长张继禹,四川省委统战部副部长、四川省宗教局局长王增建出席活动并讲话.     

任法融会长出席第三届世界和传统宗教领袖大会

7月1日至2日,第三届世界和传统宗教领袖大会在哈萨克斯坦首都阿斯塔纳市召开,任法融会长率中国宗教代表团出席了会议.