Normative Beliefs and Relational Aggression: An Investigation of the Cognitive Bases of Adolescent Aggressive Behavior

The relations between normative beliefs about different forms of aggression and corresponding aggressive behaviors were investigated in 2 studies of adolescents. In Study 1, we revised an instrument designed to assess normative beliefs about aggression to include beliefs about the acceptability of relational aggression, and we examined the psychometric properties of the instrument. In Studies 1 and 2, the unique associations of normative beliefs about relational and physical aggression with self-reported relational and physical aggression were examined. Findings across both studies revealed that beliefs-behavior associations were specific to aggression forms. In other words, beliefs about relational aggression were uniquely associated with engagement in relationally aggressive acts, whereas beliefs about physical aggression, but not relational aggression, contributed unique information about adolescents’ level of physical aggression. No gender effects were found. Results are discussed within a social-cognitive framework, and implications are explored for future prevention and intervention efforts to reduce aggressive behaviors.Assistant Professor in the Department of Human Development at Washington State University, Pullman, Washington. Dr Werner received her PhD from the University of Minnesota—Twin Cities Campus. Her research focuses on social-cognitive, peer, and family relationship correlates of relational and physical aggression.Assistant Professor in the Department of Psychology at Penn State Erie, The Behrend College, Pennsylvania. Dr Nixon received her PhD at West Virginia University. Her primary research interests include prevention and intervention of relational aggression and program evaluation.     

Discrepancy between Mother and Child Perceptions of Their Relationship: II. Consequences for Children Considered within the Context of Maternal Physical Illness

Discrepancies between parent and child perceptions of parenting have been well established. The current study addressed whether discrepancies in one dimension of parenting, the parent-child relationship, are associated with child adjustment difficulties concurrently and longitudinally. In particular, it was hypothesized that greater discrepancies in mother and child perceptions of parenting would be associated with child adjustment difficulties. Furthermore, it was hypothesized that families experiencing a stressor—in this case, maternal infection with the human immunodeficiency virus (HIV)—would experience larger discrepancies than families in which the mother is noninfected and that maternal HIV infection would moderate the association between discrepant views and child adjustment. Participants were 183 African-American women (61 HIV infected; 122 noninfected) and one of their noninfected children. All participants were from the inner-city area of New Orleans. Results indicated that discrepancies in mother and child perceptions of their relationship was associated with mother and child reports of externalizing behavior problems concurrently and longitudinally. In addition, discrepancies were significantly higher in families experiencing maternal HIV infection than in the noninfected group. However, with one exception, maternal HIV status failed to moderate the relationship between discrepancies in perception and child adjustment, indicating that discrepancies play a similar role in both types of families. Clinical implications of the present results are discussed.     

Columnar‐Thin‐Film‐Assisted Visualization of Depleted Sebaceous Fingermarks on Nonporous Metals and Hard Plastics

A fingermark on a nonporous substrate can be developed by depositing a columnar thin film (CTF) on it, but the CTF technique's sensitivity for low‐quality fingermarks is unknown. The optimized CTF and traditional development of several depletion series of sebaceous‐loaded fingermarks were compared using a split‐print methodology as well as subjective and objective grading schemes, in a limited laboratory trial. CTF development was superior to development with selected traditional techniques on brass, anodized aluminum, black acrylonitrile butadiene styrene (ABS), and white nylon. On white ABS and black nylon, the CTF technique performed poorly but still as well as the best‐performing traditional development technique. The CTF technique was more sensitive on brass and anodized aluminum than, and as sensitive on the four hard plastics and stainless steel as, the best‐performing traditional technique. Thus, the CTF technique is useful to develop friction‐ridge detail from limited fingermark residue on some smooth substrates.     

Physical Matching of Metals: Grain Orientation Association at Fracture Edge

The objective of this study was to examine whether surface crystal orientation can be used to associate or differentiate metal fracture fragments. The orientations of individual crystals and crystals across the fracture plane were measured on polished steel and iron alloy surfaces using Electron Backscattered Diffraction/ Orientation Imaging Microscopy (EBSD/OIM). This investigation examined crystallographic characteristics within a metal. This study showed that for transgranular fracture, it is feasible that pieces of grains could be associated across the fracture surface with the difference in orientation between grains (misorientation) along a length sequence of grain orientations on one side of the fracture surface to associate the other side of a fracture surface. Regarding pair comparisons of crystals on fracture surfaces, it was estimated that the probability for an ordered sequence of six distinct oriented grains along a fracture surface to occur again is about 1 in 4.82 (10)³⁰ or 2.07 (10)⁻³¹.     

浅析公安院校女学警的体能特征与训练

在总结近些年来国内对女子体能的研究成果和现状的基础上，依据公安院校女学警在体能训练时的特点，对女学警的身体形态特征，身体机能特征，运动素质特征以及训练特征进行了详细的分析和比较，同时对女学警的训练和经期训练提出了相应的措施和建议，为公安院校女生的体能训练的改进与提高提供了一定的理论依据。     

Dimensions of interparental conflict and adolescent functioning

While research has repeatedly demonstrated that interparental conflict is related to poorer child/adolescent functioning in the areas of internalizing and externalizing problems, as well as prosocial and cognitive competence, the particular relevant dimensions of the conflict have yet to be studied. The present study examined the contributions of three different dimensions of conflict to these difficulties in adolescent functioning. Forty-eight mother-father-adolescent triads participated by completing questionnaires regarding the following dimensions of their interparental conflict: frequency, method of handling, and outcome. Assessment of adolescent functioning was obtained independently through teacher-completed measures of internalizing and externalizing problems and prosocial and cognitive functioning. The results of correlational analyses indicated that father-completed measures, particularly the use of verbal and physical aggression to handle conflict, were related to all four measures of adolescent functioning. In contrast, mother-completed measures were not related. Multiple regression analyses were also conducted. For all four measures, either father physical or father verbal aggression entered first and accounted for 17 to 48% of the variance across the four dependent measures. No other indices of conflict individually accounted for a significant portion of the variance beyond that accounted for by father's verbal or physical aggression. Possible explanations for the relationship between father's method of handling of conflict and adolescent functioning are discussed.     

加强警察体能训练刻不容缓

人民警察的身体素质与执法工作紧密相连,是执行警务活动的基本保障,需要长期、自觉、刻苦地锻炼。作为人民警察,在警察院校培训期间,要了解训练内容,学会训练方法,并在今后的工作中养成锻炼的习惯,这样才能不断增强体能,更好地为社会服务。     

尿液及尿斑DNA分型的研究

目的研究尿液及尿斑的DNA提取及其检验。方法用Chelex100法及QIAampMiniKit提取尿液及尿斑样本中的DNA,进行PCR扩增及STR检验。结果新鲜的及存放时间在12h以内的尿液样本能得到较好的分型结果;存放2d左右的尿液样本有50%能检出基因型;存放7d及更长时间的尿液样本全部不能检出基因型;尿斑样本的分型成功率很低。结论较新鲜的尿液样本均能进行DNA分型,在法医检案中具有应用价值。     

浅淡警体训练损伤预防

警体训练损伤预防是当前公安院校警体教学训练中不容忽视的问题,这一问题解决的好坏直接影响着警体训练的效率和效果。只有加强防伤意识,合理安排课堂结构,改进技术动作,优化训练环境,才能最大限度地减少损伤的发生,达到预防损伤的目的,从而提高警体教学训练的效率和效果。     

透明材料上的透明附着物证检测

目的提出了一种检测透明材料上附着透明物证的新方法—位相滤波法。方法采用现代光学信息处理技术改变光信号的频谱,使零级频谱与一级频谱干涉。结果实现了由位相到强度的调制,最终检测到透明材料上的透明附着物证。结论该方法是一种无损光学检测法,操作简便,效果好。