The facilitative effect of positive stimuli on 3-year-olds’ flexible rule use

This study examined the effect of emotional stimuli on 3- to 4-year old children's flexible rule use, as measured by the Dimensional Change Card Sort (DCCS). In Experiment 1, children in two countries (Canada and China) were given 2 versions of the DCCS. The Standard version required children to sort red and blue boats and rabbits first by shape and then by color (or vice versa); the Emotional Faces version required children to sort happy and sad male and female faces first by emotion and then by gender (or vice versa). Children performed significantly better on the Emotional Faces version, and performance on the 2 versions was related. Order in which dimensions were presented had no effect. Experiment 2 examined which aspects of the emotional faces were responsible for the facilitation of children's performance. Performance on the Standard version was compared to performance on three contextual faces versions, in which children were shown happy, sad, or neutral faces and required to sort them by age (child versus adult) and then by gender (or vice versa). Facilitation was only seen in the context of happy faces. Results are consistent with the suggestion that positive stimuli promote cognitive flexibility, perhaps by increasing dopamine levels in prefrontal cortex.     

娱乐场所服务女性的行为学调查

调查娱乐场所服务女性的性行为特征及其安全套使用情况,为预防性病/艾滋病健康教育和政策制定提供参考信息。采用立意抽样方法对我省南昌和萍乡两地娱乐场所服务女性进行问卷调查。娱乐场所服务女性卖淫比例较高,卖淫者安全套使用比例和频率不高,且卖淫者安全套使用存在不平衡现象。必须进一步加大宣传教育力度及强化干预工作。     

抗菌药物合理应用的宏观和微观问题

抗菌药物不合理应用现象长期得不到纠正,细菌耐药稳步攀升,正引起医学界、社会和政府的高度关注。本文就宏观上的抗菌药物使用政策与微观上的临床用药两方面存在的问题进行探讨。介绍了国际上关于抗菌药物政策的研究以及抗菌药物合理使用的新观点（尽早开始经验性治疗、“降阶梯”治疗策略、运用抗菌药物PK／PD原理指导临床用药、短程治疗）。主张调整宏观抗生素策略,去除该政策单纯、片面限制使用和应用药敏实验结果指导临床用药绝对化的做法。吸纳国际上的新成果,强化监管力度,更多采用教育和技术手段。     

Treatment Engagement with Caregivers of At-risk Children: Gaps in Research and Conceptualization

The high rates of dropping out and other engagement problems are significant concerns in the delivery of mental health and adjunct services to the families of at-risk children. Consequently, researchers have examined the correlates of attrition and have developed interventions to increase engagement and retention. However, the lack of a clear definition of engagement and gaps in theory about the relationship of engagement to other treatment processes hinder knowledge development. In this paper the behavioral and attitudinal aspects of engagement are disentangled. Current knowledge about treatment barriers and interventions to increase appointment keeping is summarized. A preliminary conceptualization of the engagement process is presented and research needs and practice implications are discussed.     

青少年的同伴依恋与其互联网使用的关系

青少年期同伴群体的支持逐渐超过了父母的影响.青少年期同伴依恋在青少年认知、情感、人格以及行为的健康发展和社会适应中起着重要作用,拥有亲密的同伴关系的青少年出现情感问题和行为问题的可能性更小,并拥有更健康的青少年期适应能力.该研究采用同伴依恋量表、互联网服务使用状况量表以及青少年病理性互联网使用量表对405名中学生进行了问卷调查.旨在探讨青少年同伴依恋与其互联网使用之间的关系.结果表明: (1)同伴信任与社交和娱乐服务的使用偏好呈负相关,尽管都没有达到统计显著性; (2)同伴沟通可以正向预测青少年对信息、娱乐和社交服务的使用偏好,且都达到显著性水平;还可以通过互联网娱乐服务使用偏好间接预测PIU; (3)青少年与同伴的疏离程度可以正向预测青少年对社交服务的使用偏好,也可以直接正向预测PIU.     

Religiousness as a Protective Factor for Substance Use in Dance Sport

Although religiousness is found to be a significant protective factor in substance use, there is an evidential lack of studies of such in athletes. The aim of the study was to identify the predictive value of the religiousness and some social, educational, and sport factors on substance use in 43 sport dancers. An originally developed questionnaire for studying substance use and precipitation factors was applied. The Chi-square showed male dancers as more religious than females. Using the Spearman’s correlation, religiousness was found to be a significant protective factor in cigarette smoking, sport nutritional supplementation, and the likelihood of doping. Data were interpreted emphasizing the previous findings from the literature.     

Flexible cue use in food-caching birds

An animal’s memory may be limited in capacity, which may result in competition among available memory cues. If such competition exists, natural selection may favor prioritization of different memory cues based on cue reliability and on associated differences in the environment and life history. Food-caching birds store numerous food items and appear to rely on memory to retrieve caches. Previous studies suggested that caching species should always prioritize spatial cues over non-spatial cues when both are available, because non-spatial cues may be unreliable in a changing environment; however, it remains unclear whether non-spatial cues should always be ignored when spatial cues are available. We tested whether mountain chickadees (Poecile gambeli), a food-caching species, prioritize memory for spatial cues over color cues when relocating previously found food in an associative learning task. In training trials, birds were exposed to food in a feeder where both spatial location and color were associated. During subsequent unrewarded test trials, color was dissociated from spatial location. Chickadees showed a significant pattern of inspecting feeders associated with correct color first, prior to visiting correct spatial locations. Our findings argue against the hypothesis that the memory of spatial cues should always take priority over any non-spatial cues, including color cues, in food-caching species, because in our experiment mountain chickadees chose color over spatial cues. Our results thus suggest that caching species may be more flexible in cue use than previously thought, possibly dependent upon the environment and complexity of available cues.     

遗传、环境和青少年的吸烟饮酒行为：芬兰双生子研究的回溯与前瞻

本文介绍的两个“芬兰双生子（Finn Twin）”研究是对10个出生组的青少年双生子及其家庭的长期跟踪研究。本文概述了这两个项目对遗传与环境的关联和互动对吸烟饮酒行为影响的研究。这些研究的结果提示个体差异对吸烟饮酒行为的长期变动的影响受到兄弟姐妹互动、同伴互动以及父母教养方式的调节。环境对吸烟饮酒的影响主要表现在学校、居住社区与家庭环境的差异上。环境与遗传影响的程度和持久度有城乡差异。遗传的影响受居住社区的制约。多阶段模型的分析揭示了遗传与环境的互动对这些行为的演变（从试吸试饮到发展到滥用）的动态的影响,遗传似乎对吸烟饮酒的共同轨迹更有影响。这些结果对今后本项目对这约1万对芬兰成年双生子的分子遗传学研究提供了有益的线索     

Prospective Relations Between Organized Activity Participation and Psychopathology During Adolescence

This longitudinal study examined psychopathology as a predictor and outcome of organized activity involvement during high school among 198 adolescents who varied in risk for psychopathology as a function of their mother's depression history. Higher levels of internalizing and externalizing symptoms in eighth grade significantly predicted lower levels of involvement in academic clubs during high school, over and above risk and SES. Tobacco use prior to high school predicted lower levels of involvement overall and in academic clubs and performance arts. Controlling for psychopathology prior to high school, higher levels of activity involvement were associated with lower levels of externalizing symptoms, less tobacco use, and fewer diagnoses of behavior disorders and substance abuse in 12th grade. The positive association between risk and adolescent psychopathology was not buffered by adolescent activity involvement. Overall, these findings suggest that involvement in organized activities may contribute to lower levels of externalizing psychopathology during high school even when controlling for prior psychopathology.     

病理性使用互联网的界定与测量

病理性使用互联网（Pathological Internet Use,PIU）是人在互联网使用过程中出现的一种新型心理疾病。很多研究者认为互联网使用过度或不当是病理性使用互联网的主要原因。该文对病理性使用互联网已有研究的概念的界定与测量问题进行了分析与整合,讨论了在中国社会文化背景下如何界定与测量病理性使用互联网。