The Strengths and Difficulties Questionnaire (SDQ): the Factor Structure and Scale Validation in U.S. Adolescents

The Strengths and Difficulties Questionnaire (SDQ) is one of the most commonly used instruments for screening psychopathology in children and adolescents. This study evaluated the hypothesized five-factor structure of the SDQ and examined its convergent validity against comprehensive clinical diagnostic assessments. Data were derived from the National Comorbidity Survey - Adolescent Supplement (NCS-A), a nationally representative sample of U.S. adolescents aged 13 to 18 years. Parents/parent surrogates (n=6,483) was asked to complete a self-administered questionnaire including the SDQ and DSM-IV comprehensive diagnostic information on the participating adolescents. Confirmatory factor analysis (CFA) was conducted to assess the factor structure of the SDQ. The five-factor solution of the SDQ (including emotional, conduct, hyperactivity-inattention, peer relationship, and prosocial) provided a satisfactory fit to the data, and was invariant across sex, age, race/ethnicity and income subgroups. SDQ scores predicted a significantly increased probability of meeting criteria for a DSM-IV disorder, with better prediction for behavior disorders than for mood disorders. Decreasing the SDQ cutoffs to the 80th percentile significantly increased the sensitivity from 39% to 63% for the SDQ Total Difficulties Score, with an expected decrease in specificity from 93% to 87%. This work confirms the five-factor structure of the SDQ in an ethnically and sociodemogrpahically diverse community sample of adolescents. Our findings strengthen empirical evidence for the use of the parent-reported SDQ as a screening tool for DSM-IV behavioral and emotional disorders in adolescents identified in the general population.     

The Effect of Social Network Site Use on Appearance Investment and Desire for Cosmetic Surgery Among Adolescent Boys and Girls

Although adolescents frequently use social network sites, little is known about whether the highly visual and self-presentation-centered character of such sites affects body-related outcomes such as investment in appearance and appearance-changing strategies. Due to gender differences in appearance pressures and appearance ideals, these effects of social network sites on body-related outcomes may differ between boys and girls. The aim of the current study was therefore to investigate the relationships between social network site use, appearance investment, and desire for cosmetic surgery among adolescents and to compare the experiences of boys and girls. We used data from a two-wave panel study among 604 Dutch adolescents (aged 11–18). Structural equation modeling showed that social network site use positively predicted adolescents’ desire to undergo cosmetic surgery indirectly through increased appearance investment. The relationships found between social network site use, investment in appearance, and cosmetic surgery desire applied to boys and girls and were not moderated by gender.     

Kinematics, kinetics, and electromyogram of ankle during drop landing: a comparison between dominant and non-dominant limb

The biomechanical difference between the dominant and non-dominant limb has seldom been studied during double-leg landing. The objective of this study was to evaluate the effectiveness of limb laterality on the ankle kinematics, kinetics and electromyogram (EMG) during drop landing. Sixteen healthy adults were recruited and dropped individually from platforms with three different heights (0.32 m, 0.52 m, and 0.72 m). The ground reaction force, ankle joint kinematics, and surface EMG of tibialis anterior (TA) and lateral gastrocnemius (LG) were measured in both lower extremities. Two-way analysis of variance was used to analyze the effects of laterality and dropping height. The peak angular velocities in dorsiflexion and abduction were significantly higher in the dominant ankle, whereas the pre- and post-landing EMG amplitudes of the TA were significantly higher in the non-dominant limb. Compared with the dominant side, the non-dominant ankle has a more effective protective mechanism in that excessive joint motion is restrained by greater ankle flexor activity. Compared with the non-dominant side, the dominant ankle joint is in greater injury risk during drop landing, and data measured in the dominant limb may produce more conservative conclusions for injury protection or prediction.     

上清派炼养术的藏象学说内涵探讨

上清派是道教的一个重要流派,形成于魏晋时期,创始人相传为西晋女道士魏华存。该派以《上清经》、《黄庭经》、《真诰》等道书为主要经典,以存思、守神、行气、服食为主要修炼手段,对道学及中医学都有着深远的影响。魏晋时     

小学生字词识别与语言技能、工作记忆关系研究

本研究采用注音任务、语言任务、再认方法探讨了小学生字词识别与语言技能、工作记忆的关系和影响小学生字词识别的因素。发现：(1)字词识别与语言技能、工作记忆在2、4年级相关均显著;6年级学生字词识别与语言技能的形旁及工作记忆相关不显著,但与语言技能其它维度相关显著(2)预测小学生字词识别发展的主要因素随年级升高而变化。预测2年级学生字词识别的重要指标是语音的音节、字形的形旁与工作记忆;4年级是语音的音节、字形的声旁、句法与工作记忆;6年级是语音的声韵、字形的声旁与语义。     

组织变革的多样性管理:一种系统性框架

组织的变革是组织发展的一个关键。但是研究表明,对于组织变革的管理相对比较薄弱．而在方法论上的一些探索有助于解决组织变革管理薄弱的问题。本文将简要阐述在组织变革管理中所应用的一些方法及其不足,并就系统观以及与组织变革管理相关的问题作一些讨论。在组织变革过程中系统性框架的应用将有助于解决组织多纬度变革的差异及其多纬度变革间的相互作用问题。因此．系统性框架对于理解和管理组织的变革是非常有作用的。     

试论宗教与民族的关系

宗教与民族的关系,不论在中国还是全世界,在历史文化还是现实生活中,都是一个引人注目的重大问题。本文旨在从理论上澄清二者的基本关系。文章先从理论和现实两方面提出了研究二者关系的必要性,再从宗教与民族关系的根源、宗教对民族形成的作用、宗教与民族特性的区别、宗教与民族发展的相互作用、宗教对民族之间关系的正负影响等方面,进行了兼顾问题两面的理论澄清,指出在宗教与民族二者之中,任一方的道德或理性成分的发展都会有利于另一方的道德或理性成分的发展,任一方的狂热或反理性倾向都会加剧另一方的狂热或反理性倾向;最后从世界各国宗教与民族关系的历史与现状着眼,概括了宗教与民族各自面对的问题,并从中尽力总结出七条经验教训,以期有利于我国在宗教与民族关系上的理论研究和实际工作。     

The monocular-boundary-contour mechanism in binocular surface representation and suppression

Boundary contours are important for representing binocular surfaces, including those in binocular rivalry. Ooi and He (2006, Perception 35 581-603) showed that a half-image with a boundary contour defined by abutting gratings predominates in binocular rivalry. We investigated the monocular-boundary-contour mechanism using Kanizsa square-like rivalry displays. In experiment 1, the left half-image had a vertical illusory contour on the right edge while the right half-image had a vertical illusory contour on the left edge. The Kanizsa elements (discs and pacmen) were filled with a 135 degree grating and placed on a 45 degree-grating background. When fused, observers experienced a strong predominance for perceiving an illusory rectangle in front of four discs. But this percept was replaced by robust rivalry alternations when the stimulus was manipulated by (i) switching the half-images between eyes, (ii)relocating the pacmen in each half-image to form horizontal illusory contours, or (iii) placing the pacmen diagonally (thus eliminating each monocular illusory contour). Such robust rivalry alternations were similar to those experienced when a 135 degree-grating disc was in rivalry with a 135 degree-grating pacman alone on the 45 degree-grating background (experiment 2). Experiment 3 showed that the relatively stable illusory-rectangle percept in experiment 1 is affected by the alignment of the images in the two eyes, in a manner consistent with adherence to the occlusion constraint in binocular surface formation.     

新疆地区穆斯林社会心理的实证分析报告

新疆是穆斯林人口较多的边疆地区,研究和分析这个区域穆斯林的社会心理问题,对包括新疆在内的穆斯林居住区的宗教工作有着重要的理论和现实意义。问卷调查结果显示,目前,新疆地区穆斯林的宗教心理具有明显的索求性特征,宗教行为动机在向世俗化、非宗教方面变化。信奉伊斯兰教,既是他们宗教归属的需要,也是他们民族归属的需要。在伊斯兰教和现实问题之间,他们更关注和重视现实问题。怎样在非宗教的基础上满足公民全面发展的需求,使他们不必为了寻求安慰而去求助于宗教的方法和手段,应该成为当前新疆宗教工作认真思考并加以解决的问题。     

论中国逻辑学的繁荣与发展——纪念改革开放30周年

作为一个有着几千年悠久历史的文明古国,中国一直以灿烂的文化著称于世.但是,我国古代的知识论和方法论却不甚发达,尤其是作为方法论的逻辑学最不发达.在中国古代,除了<墨经>算得上是一本"逻辑学著作"以外,其他的浩如烟海的著作却很少涉及到逻辑学,因而就更难称得上是逻辑学著作了.