学生感知的教师欺凌态度与学生欺凌行为的关系——学生欺凌态度的中介作用及其性别的调节作用

校园欺凌严重影响青少年身心的健康发展,教师是预防和干预校园欺凌的重要力量。本研究拟在考察学生感知的教师欺凌态度与学生欺凌行为关系的基础上,探究学生欺凌态度的中介效应以及性别的调节作用。本研究采用《校园欺凌量表》、《学生欺凌态度量表》以及《学生感知的教师欺凌态度量表》对来自北京市两所初中的698名初一和初二学生进行测查。结果显示:(1)初中男生总体及不同类型的欺凌行为及其欺凌态度均显著高于女生,而女生所感知的教师欺凌严重性态度则显著高于男生;(2)学生感知的教师欺凌严重性态度显著负向预测学生欺凌行为;(3)学生欺凌态度在学生感知的教师欺凌态度和学生欺凌行为之间起部分中介作用;(4)学生欺凌态度的中介效应存在显著性别差异,男生欺凌态度为部分中介作用,而女生欺凌态度为完全中介作用。     

父母自主支持、父母心理控制和青少年网络成瘾的关系：一项交叉滞后研究

对1222名青少年进行六个月的追踪测查,以探讨父母自主支持、父母心理控制和青少年网络成瘾之间的相互预测关系。结果表明：（1）前、后测父母自主支持均与网络成瘾呈负相关。（2）前、后测父母心理控制均与网络成瘾呈正相关。（3）前测父母自主支持可以预测后测网络成瘾,前测网络成瘾也可以预测后测父母自主支持。（4）前测父母心理控制可以预测后测网络成瘾,但前测网络成瘾不能显著预测后测父母心理控制。本研究揭示了父母因素与青少年行为之间的相互作用,这对改善青少年网络成瘾有一定的实践意义。     

Cognitive ability in virtual reality: Validity evidence for VR game‐based assessments

Virtual reality (VR) technology may provide unique benefits for assessing individual characteristics, in contrast with traditional assessments. This study examined validity evidence for the use of VR game (VRG) scores to indicate specific cognitive abilities. Participants completed three VRGs, three computer‐based assessments (CBAs), and additional scales. To evaluate convergent validity, VRG scores were compared with CBA scores. For divergent validity, VRG scores were compared with five factors of personality based on the Five Factor Model. For criterion‐related validity, VRG scores were compared with academic achievement (i.e., grade point average). Findings generally provided support that the VRG scores are related to certain spatial reasoning subdimensions of cognitive ability. However, further research is needed to examine the qualities of VRGs as assessment tools.     

成瘾相关记忆的表观遗传学机制 ——药物成瘾研究的新视角

成瘾相关记忆长期性的脑机制一直是药物成瘾研究领域的难点与热点,该文简要介绍了成瘾记忆长期性分子机制的研究脉络,提示表观遗传学修饰可能是研究药物成瘾的新视角。成瘾药物可以调节染色体不同亚型组蛋白乙酰化水平,不同基因DNA的甲基化程度从而改变染色体的空间结构,进而调节基因的表达导致成瘾,特别是DNA甲基化改变的相对的稳定性可能是成瘾记忆长期存在的分子基础。记忆再巩固过程中学习记忆相关脑区的记忆促进基因与记忆抑制基因的表观遗传学改变可能是未来研究的新趋势     

基于增长模型的非随机缺失数据处理:选择模型和极大似然方法

对含有非随机缺失数据的潜变量增长模型,为了考察基于不同假设的缺失数据处理方法:极大似然(ML)方法与DiggleKenward选择模型的优劣,通过Monte Carlo模拟研究,比较两种方法对模型中增长参数估计精度及其标准误估计的差异,并考虑样本量、非随机缺失比例和随机缺失比例的影响。结果表明,符合前提假设的Diggle-Kenward选择模型的参数估计精度普遍高于ML方法;对于标准误估计值,ML方法存在一定程度的低估,得到的置信区间覆盖比率也明显低于Diggle-Kenward选择模型。     

非那雄胺与前列腺癌发病率及病理分级的Meta分析

应用Meta分析法对有关非那雄胺与前列腺癌发病率及病理分级关系的研究进行综合评价。符合标准的8篇文献进行Meta分析,计算比值比（OR）、95％可信区间（95％C1）。结果8篇文献,无异质性（Q=6．26,P=0．51）,非那雄胺治疗组降低前列腺癌发病风险高于对照组,合并OR值为0．68（95％CI：0．65～O．71...     

非那雄胺与前列腺癌发病率及病理分级的Meta分析

应用Meta分析法对有关非那雄胺与前列腺癌发病率及病理分级关系的研究进行综合评价.符合标准的8篇文献进行Meta分析,计算比值比(OR),95%可信区间(95%C1).结果8篇文献,无异质性(Q=6.26,P=0.51),非那雄胺治疗组降低前列腺癌发病风险高于对照组,合并OR值为0.68(95%CI:0.65～0.71,Z=17.16,P=0.00).Egge:检验提示无发表偏倚(P=O.21).对前列腺癌病理分级进行分组,非那雄胺治疗组前高于对照组.合并OR值为2.16(95%CI:1.97～2.36,Z=16.93,P=0.00).非那雄胺治疗前列腺增生能降低前列腺癌的发病风险,也能使发生的前列腺癌的病理级别增高.     

The Effect of Incentives upon Information Gathering in Diagnostic Problem Solving

Tasks reflecting both Level I and Level II abilities as defined by Jensen (6) were performed with more accuracy by preschool children identified in the upper SES level. This performance trend remained the same even after the variable of IQ was controlled for by covariance for the SES levels involved in the study.

These results may reflect a general state of cognitive deprivation for children in the lower SES level as opposed to a specific Level II deficit. However, the performance on Subtest 2 was not significantly different for the two socioeconomic groups involved. This subtest involves choosing, from an array of four pictures of objects, the picture that is conceptually similar to a stimulus picture presented to the youngster. This is supposedly a Level II task. Therefore, some doubt is cast upon the notion of the generic differences between Level I and Level II abilities. At least for the sample in this study the Level I-Level II dichotomy has not been substantiated, and the corollary Arthur Jensen (6) hypotheses have equivocal substantiation.     

Family Functioning Moderating the Effects of Childhood Sexual Abuse on Memory Specificity

The main goal of this study was to investigate if adults sexually abused as children who were raised in a functional family are more able to generate specific autobiographical memories and suffer fewer depressive symptoms than sexually abused adults who were raised in a dysfunctional family. We found that abused males retrieved fewer specific memories than nonabused males, abused females, and nonabused females. The three latter groups did not differ from each other. Further, childhood sexual abuse did not predict depression among males and females. After accounting for family functioning, there were no group differences regarding memory specificity. Functional families appear to have beneficial effects on the adjustment of male victims of childhood sexual abuse.     

Follow-up Validation of Rorschach Tempo and Color Use Indicators of Schizophrenia

Two to five year psychiatric follow-ups through a case register of original cross-validating samples for some Rorschach tempo and color use indicators of schizophrenia found subsequent diagnosis of schizophrenia associated (a) beyond the .001 level with certain deviations from normative tempo and (b) beyond the .01 level with presence of pure C or two or more of the following: 1–2 CF, Sum C 1.5–3.0, CF without C. Combined classification by the tempo and color variables was accurate in 90% of schizophrenic and 80% of nonschizophrenic cases manifesting neither or both variables. These findings, occurring within a population of psychiatric patients referred for testing, recommend the clinical utility of the variables.