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Socioeconomically disadvantaged neighborhoods increase the risk for poor mental health among residents, yet protective factors may operate alongside risk. This study evaluated the influence of the prenatal neighborhood ethnocultural context on child behavior problems and maternal depressive symptoms. Prenatal maternal role expectations, prenatal culture-specific stress, and postpartum depression (PPD) symptoms were evaluated as mediators. Participants included 322 low-income, Mexican American mother-child dyads. Women (Mage = 27.8) reported on proposed mediators, maternal depressive symptoms, and child behavior problems at 4.5 years. Neighborhood Latinx concentration was obtained from census data. Higher Latinx concentration predicted fewer maternal depressive symptoms and child behavior problems, mediated through role expectations and PPD symptoms. Results suggest prenatal neighborhood context to impact later maternal and child mental health.  相似文献   
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It has been shown (Lawrence, S. (2001). Online or invisible? Nature, 411, 521) that journal articles which have been posted without charge on the internet are more heavily cited than those which have not been. Using data from the NASA Astrophysics Data System (ads.harvard.edu) and from the ArXiv e-print archive at Cornell University (arXiv.org) we examine the causes of this effect.  相似文献   
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This article considers ongoing attempts to regulate or even ban researchon LambdaMOO. Industry, private individuals, and research institutionshave supported MOOs, or multi-user object-oriented worlds. The earlyresearch on MOOs by Pavel Curtis, who was one of the key designers,suggests that these systems are part of a research project and have beenresearched since they were originally designed. However, a group ofMOOers have grown increasingly uncomfortable about the quotation ofcertain texts on web sites and academic journals and the potentiallypanoptic effect of research. Some of these practices have breachedcommunity conventions. Yet, such things as testing, invisibly watching,freely quoting characters, and ignoring certain rules have always beenaspects of the system. The dispute over research ethics and theparticipation of varied researchers within this setting indicate thatdiverse values are represented among MOOers and different expectationsexist about how the MOO might be a community. The term ``community' andthe presumption that online characters are people may have alsoincorrectly informed the research debate by making it seem that onlinesettings provide immediate access onto spaces, bodies, and individuals.Many MOOers may believe that research threatens individuals andcommunity. However, critical histories and analysis are needed in orderto explain the system to new users and encourage alternative forms ofdevelopment. Such work can only be produced if online systems are opento research and critique.  相似文献   
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Conclusion This study is preliminary in nature, and the instrument will require some modification to reduce its length and to further increase the reliability of the attitude scale. None-the-less, in addition to replicating some important aspects of previous studies, and introducing a measurement of primary school teachers' science related attitudes, it does provide valuable data prior to the introduction of the new course guides. When used in conjunction with the findings of a similar survey which is to be conducted in 1983, these data will help to assess the impact of the introductory phase of the course in Victorian Schools.  相似文献   
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The relationship between inappropriate breast support and upper-extremity kinematics for female runners is unclear. The purpose of this study was to investigate the effect of breast support and breast pain on upper-extremity kinematics during running. Eleven female recreational runners with larger breasts (UK D and E cup) completed a 7 min 20 s treadmill run (2.58 m · s?1) in a high and low breast support condition. Multi-planar breast and upper-extremity kinematic data were captured in each breast support condition by eight infrared cameras for 30 s towards the end of the run. Breast pain was rated at the end of each treadmill run using a numeric analogue scale. The high support bra reduced breast kinematics and decreased breast pain (P < 0.05). Upper-extremity kinematics did not differ between breast support conditions (P > 0.05), although some moderate positive correlations were found between thorax range of motion and breast kinematics (r = 0.54 to 0.73). Thorax and arm kinematics do not appear to be influenced by breast support level in female runners with large breasts. A high support bra that offers good multi-planar breast support is recommended for female runners with larger breasts to reduce breast pain.  相似文献   
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Speech disfluencies can convey information to listeners: Adults and children predict that filled pauses (e.g., uhh) will be followed by referents that are difficult to describe or are new to the discourse. In adults, this is driven partly by an understanding that disfluencies reflect processing difficulties. This experiment examined whether 3½‐year‐olds' use of disfluencies similarly involves inferences about processing difficulty. Forty children were introduced to either a knowledgeable or a forgetful speaker, who then produced fluent and disfluent utterances. Children exposed to the knowledgeable speaker looked preferentially at novel, discourse‐new objects during disfluent utterances. However, children who heard the forgetful speaker did not. These results suggest that, like adults, children modify their expectations about the informativeness of disfluencies on a speaker‐specific basis.  相似文献   
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The aging of the Baby Boom presents long-term care with many new challenges. Among these are the historically high levels of drug use by this cohort. This study surveyed administrators of licensed skilled nursing facilities in the Commonwealth of Kentucky regarding their perception of current drug use by residents, facility policies and procedures currently in place regarding illicit drug use, and their attitudes toward use of illicit drugs by residents. The results of interviews with 40 administrators or their designees revealed that they have experienced little problem with use or abuse of illegal drugs by residents. Fewer than one-third of the facilities had formal policies in place regarding illegal drug use. Only 10% had any experience with requests for medical marijuana, but almost one in five had a policy on the matter and nearly one-third stated they would support medical marijuana use by some of their residents if the matter arose. These authors recommend the following: (a) that the issue of illicit drug use needs to be addressed now before the situation becomes critical, (b) that administrators and staff need to be educated about recreational drug use and appropriate responses to drug abuse, (c) that screening instruments for drug abuse in this population should be developed and implemented, and (d) that policies regarding medical marijuana need to be adopted by all such facilities.  相似文献   
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