The thermal effect of monopolar radiofrequency energy on the properties of joint capsule. An in vivo histologic study using a sheep model

BACKGROUND: Efforts to prevent and decrease tobacco use and tobacco-related disease include improving the quality of tobacco-control laws to make them more stringent in controlling tobacco advertising, youth access, and exposure to environmental tobacco smoke (ETS). However, because there are no instruments to empirically evaluate the quality of such laws, it has been difficult to demonstrate that their quality is associated with decreased youth access or tobacco-related morbidity. We present the first instrument for empirically assessing the quality of tobacco-control policies. METHODS: Recommendations for the content of an ideal, comprehensive tobacco-control policy were used as the 55 items in the Assessment of the Comprehensiveness of Tobacco Laws Scale (ACT-L Scale). Raters evaluated 71 tobacco-control laws with the scale; 70 of these were actual California laws and 1 was a model law from Americans for Non-smokers' Rights (ANR). RESULTS: Interrater (r = 0.64-0.89) and internal-consistency (r = 0.63-0.88) reliability of the scale and subscales were high, and validity was established by demonstrating that the ANR model law received a significantly higher total score (mean = 18.75) than all actual laws (mean = 2.04). California tobacco-control laws were poor in all areas (youth access, ETS, tobacco advertising). CONCLUSIONS: The ACT-L scale can be used to compare and evaluate the quality of tobacco-control laws, highlight areas in which further policy efforts are needed, quantify improvement in such policies, and empirically demonstrate the positive health impact of high-quality tobacco-control laws.     

Acculturation-Related Variables, Sexual Initiation, and Subsequent Sexual Behavior Among Puerto Rican, Mexican, and Cuban Youth.

The relationship among acculturation-related variables, past sexual activity, and subsequent sexual behavior was examined for a sample of Latino youth in the United States over a 12-month period. A subsample from the National Longitudinal Study of Adolescent Health database was analyzed by means of a prospective design. History of sexual intercourse predicted subsequent sexual behavior over the ensuing 12 months. The acculturation-related variables were related to whether an adolescent reported being sexually active at Wave 1 but in a complex fashion. Among recent immigrants, youth from English-speaking homes were less likely to be sexually active than those from Spanish-speaking homes. The opposite was observed for youth who were born in the United States or who had resided in the United States most of their lives. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

The reliability and validity of the Psychopathy Checklist: Youth Version (PCL:YV) in nonincarcerated adolescent males.

Current knowledge about the validity of the psychopathy syndrome in youth is limited largely to studies relying on parent-teacher rating scales or slight modifications of adult measures. Recently, the Psychopathy Checklist: Youth Version (PCL:YV) was designed for use with adolescents. However, most studies that have used this measure examined incarcerated mates and addressed only validity criteria related to antisocial behavior. We investigated the generality and construct validity of the psychopathy syndrome in an adolescent sample by assessing 115 adolescent males on probation with the PCL:YV. Reliability of measurement was high. PCL:YV ratings predicted not only antisocial behavior but also other indices of childhood psychopathology, interpersonal behaviors associated with adult psychopathy, and a lack of attachment to parents. These findings suggest that the PCL:YV identifies a syndrome in adolescence consistent with theory and research on adult males. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Youth gambling behaviors: An examination of the role of resilience.

The study of resilient children has overturned many deficit-focused models concerning the ontogenesis of children raised in adversity. This study explored the relationship between risk and protective factors, resilience, and youth gambling behavior. More specifically, this study examined the relative contribution of various risk and protective domains in relation to problem gambling behavior and examined whether youth identified as resilient (high risk exposure- high internalized protection) were as likely as those identified as vulnerable (high risk exposure-low internalized protection) to engage in excessive gambling behavior. The sample consisted of 1,273 students ages 12 to 19. The findings demonstrated that risk and protective factors each provide a unique contribution to the prediction model of gambling problems. Resilient and vulnerable youth differed significantly in their self-reported gambling severity. As well, resilient youth were not statistically distinguishable from low-risk exposure groups in terms of their gambling severity. Findings are interpreted with respect to resilience and prevention research. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

The effect of enforcing tobacco-sales laws on adolescents' access to tobacco and smoking behavior

BACKGROUND: Enforcing laws banning tobacco sales to minors is widely advocated as a way to reduce young people's access to tobacco and tobacco use. Whether this approach is successful is not known. METHODS: In a two-year controlled study, we assessed sales of tobacco to minors and young people's access to and use of tobacco in six Massachusetts communities. Three communities (the intervention group) enforced tobacco-sales laws, whereas three matched communities (the control group) did not. To assess compliance with the law, minors working for the study investigators attempted to purchase tobacco from all retail vendors in each community every six months. Three annual anonymous surveys of a total of 22,021 students in grades 9 through 12 (response rate, 84 percent) measured access to tobacco and smoking behavior. RESULTS: At base line, 68 percent of 487 vendors sold tobacco to minors. Compliance with the law improved significantly faster in the intervention communities than in the controls (P<0.001). By the study's end, 82 percent of the merchants in the intervention communities complied with the law, as compared with 45 percent in the control communities (P<0.001). However, adolescents under 18 years old reported only a small drop in their ability to purchase tobacco and no decline in its use. Communities with and those without enforcement programs did not differ with respect to these outcomes. CONCLUSIONS: Enforcing tobacco-sales laws improved merchants' compliance and reduced illegal sales to minors but did not alter adolescents' perceived access to tobacco or their smoking. Test purchases of tobacco do not accurately reflect adolescents' self-reported access to tobacco, and reducing illegal sales to less than 20 percent of attempts -- the goal of a new federal law-- may not decrease young people's access to or use of tobacco.     

The Theory of "truth": How Counterindustry Campaigns Affect Smoking Behavior Among Teens.

This study used structural equation modeling to test a theory-based model of the pathways by which exposure to the "truth" counterindustry media campaign influenced beliefs, attitudes, and smoking behavior in national random-digit-dial telephone surveys of 16,000 12- to 17-year-olds before, 8 months after, and 15 months after campaign launch. Consistent with concepts from the theory of reasoned action, youth in markets with higher levels of campaign exposure had more negative beliefs about tobacco industry practices and more negative attitudes toward the tobacco industry. Models also provided support for a social inoculation effect, because negative industry attitudes were associated with lower receptivity to protobacco advertising and with less progression along a continuum of smoking intentions and behavior. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Therapist Alliance-Building Behavior Within a Cognitive-Behavioral Treatment for Anxiety in Youth.

Explored the specific behavior of therapists contributing to a child client's perception of a therapeutic alliance with youth (n = 56) who received a manualized cognitive-behavioral treatment for anxiety disorders. The first 3 sessions were coded for 11 therapist behaviors hypothesized to predict ratings of alliance. Child, therapist, and observer alliance ratings were gathered after the 3rd and 7th therapy sessions. "Collaboration" positively predicted early child ratings of alliance, and "finding common ground" and "pushing the child to talk" negatively predicted early child ratings of alliance. Although no coded therapist behaviors predicted early therapist ratings of alliance, "collaboration" and "not being overly formal" positively predicted therapist alliance ratings by Session 7. Child, observer, and therapist ratings of alliance were significantly correlated. Results are discussed with regard to the identified behavior of the therapist as a step toward the identification of empirically supported strategies for building a stronger child-therapist alliance. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

浅谈新形势下如何做好企业青年工作

受社会环境等诸多复杂因素影响,当前形势下企业青年存在理想信念不牢、缺乏奉献精神等普遍性问题。要做好企业青年工作、推动其为企业发展做更大贡献,就必须加强对青年的形势任务教育,工作中注重对青年的技术培养和能力提升,生活上加强对青年的人文关怀。     

Evidence for clinical smoking cessation for adolescents.

Objective: This report reviews the evidence that informs the role of health and mental health care providers in addressing youth smoking cessation. Design: Qualitative literature review. Results: Physicians do not consistently screen adolescents for tobacco use and fail to provide recommended cessation advice. Challenges to addressing smoking cessation include the need for procedures to ensure confidentiality and the existence of competing demands to provide other services. Few published studies have specifically addressed the effectiveness of clinical interventions. Interventions that require return visits or follow-up phone contacts are technically difficult to implement in this population. Successful interventions may require resources not available in nonresearch settings. Most studies have used brief clinical intervention as a control condition, making it impossible to evaluate its effectiveness. Conclusion: There is little evidence that supports current clinical smoking cessation guidelines for adolescents. More research is needed to develop inexpensive, efficient clinical interventions that can provide youths access to smoking cessation help. Future challenges include reorganizing clinical systems to offer greater counseling by support staff or in electronic formats and to provide effective booster messages and follow-up care in a population that is difficult to track. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Aggression in male mice lacking functional estrogen receptor α.

Estrogen receptor alpha knockout (ERαKO) male mice fail to display sexual behavior. The authors hypothesized that ERαKOs require higher testosterone (T) concentrations than wild-type (WT) males to exhibit copulatory behavior. Increasing T stimulated sexual behavior and preference for females in WT males but failed to do so in ERαKOs. However, T did induce female-directed aggression in ERαKOs. In aggression tests, WT residents selectively attacked T-treated male intruders. ERαKO residents attacked female, T-treated male, and estrogen-treated male intruders equally. Increased access to olfactory cues prior to direct contact reduced overall aggression in ERαKO versus WT males but did not cause ERαKOs to differentially attack male and female opponents. Results suggest that ERα is essential for normal social behavior, perhaps via processing of chemoinvestigatory cues, which are required to discriminate males from females. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

The effects of school-based intervention programs on aggressive behavior: A meta-analysis.

Research on the effectiveness of school-based programs for preventing or reducing aggressive behavior was synthesized with a meta-analysis. Changes in aggressive behavior between pretest and posttest were analyzed for developmental patterns and characteristics associated with differential effects. Control groups showed little change in aggressive behavior, but there were significant reductions among intervention groups. Most studies were conducted on demonstration programs; the few studies of routine practice programs showed much smaller effects. Among demonstration programs, positive outcomes were associated with a variety of study, subject, and intervention characteristics. Most notably, higher risk youth showed greater reductions in aggressive behavior, poorly implemented programs produced smaller effects, and different types of programs were generally similar in their effectiveness, other things equal. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Religion as a Resource for Positive Youth Development: Religion, Social Capital, and Moral Outcomes.

Although existing literature demonstrates that developmental benefits are associated with religion for adolescents, little is understood about the dynamics of this relationship. Drawing on social capital theory, this study tested a conceptual model exploring socially embedded religious influences on moral outcomes. A three-dimensional model of social capital demonstrated how social interaction, trust, and shared vision enable social ties associated with religiousness to influence moral behavior. Structural equation modeling was used with data gathered from 735 urban youths to test a proposed model of the effects of religiousness on moral outcomes. Results suggested that religiously active youths report higher levels of social capital resources and that the influence of adolescent religiousness on moral outcomes was mediated through social capital resources. Suggestions for further research and implications for faith-based youth development organizations are considered. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Posttraumatic Stress Disorder in Youth: A Critical Review of the Cognitive and Behavioral Treatment Outcome Literature.

What treatments work for children who have posttraumatic stress disorder (PTSD)? Perhaps more important, what else do clinicians need to learn? In this article, the authors focus on treatment research in the area of trauma and PTSD in youth, in an attempt to highlight the clinical implications of such work and to identify the areas in which additional research is needed. Overall, there is emerging evidence that a variety of cognitive and behavioral programs are effective in treating youth with PTSD. In spite of such evidence, additional research is needed to shore up the scientific base for effective clinical practice with these youth. Psychologists working with traumatized youth will find this article a useful update on the state of evidence for cognitive-behavioral interventions in the treatment of PTSD. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

The implications of Big Five standing for the distribution of trait manifestation in behavior: Fifteen experience-sampling studies and a meta-analysis.

One of the fundamental questions in personality psychology is whether and how strongly trait standing relates to the traits that people actually manifest in their behavior when faced with real pressures and real consequences of their actions. One reason this question is fundamental is the common belief that traits do not predict how individuals behave, which leads to the reasonable conclusion that traits are not important to study. However, this conclusion is surprising given that there is almost no data on the ability of traits to predict distributions of naturally occurring, representative behaviors of individuals (and that there are many studies showing that traits do indeed predict specific behaviors). The authors describe a meta-analysis of 15 experience-sampling studies, conducted over the course of 8 years, amassing over 20,000 reports of trait manifestation in behavior. Participants reported traits on typical self-report questionnaires, then described their current behavior multiple times per day for several days as the behavior was occurring. Results show that traits, contrary to expectations, were strongly predictive of individual differences in trait manifestation in behavior, predicting average levels with correlations between .42 and .56 (approaching .60 for stringently restricted studies). Several other ways of summarizing trait manifestation in behavior were also predicted from traits. These studies provide evidence that traits are powerful predictors of actual manifestation of traits in behavior. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Does the Youth Corrections System Work? Tracking the Effectiveness of Intervention Efforts With Delinquent Boys in State Custody.

This study adopted a systemic approach to studying intervention efforts with delinquent youth, examining the association between several youth corrections programs and adult criminal outcomes. Two studies were designed to use juvenile and adult court records to evaluate the effectiveness of treatment programs provided to delinquent youth in state custody. The results of Study 1 suggested that court-recorded delinquent charges can be used to estimate delinquency severity. The results of Study 2 presented a discouraging but not entirely unexpected illustration of the effectiveness of intervention efforts among delinquent youth. It was found that time spent in juvenile detention facilities, work programs, and group homes was associated with negative adult criminal outcomes. No links between time spent in youth corrections programs and positive outcomes were identified. Implications for future program evaluation efforts are discussed. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Developmental structure of genetic influences on antisocial behavior across childhood and adolescence.

It is necessary to determine if causal influences on developing antisocial behavior change with age to guide both research and theory on its origins. The extent to which the same genetic factors influence antisocial behavior across 4–17 years of age was estimated using 2,482 sibling pairs of varying genetic relatedness. Assessments of antisocial behavior by mothers (4–9 years), mothers and youth (10–13 years), and youth (14–17 years) reflected the changing validity of informants across development. Genetic influences on antisocial behavior at 14–17 years were entirely shared with those on antisocial behavior at 10–13 years according to both informants. Genetic influences on antisocial behavior at 14–17 years were distinct from those at 4–9 years, however. These age differences in genetic influences cannot be fully distinguished from informant differences across age, but the present findings indicate that youth reported to be persistently antisocial during childhood and adolescence are influenced by one set of genetic factors influencing parent-report conduct problems in childhood and a second set of genetic influences on youth-reported delinquency that come into play around the time of the pubertal transition. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Peer-group association and adolescent tobacco use.

P. Mosbach and H. Leventhal (see record 1988-32396-001) examined the relation of cigarette smoking to peer-group identification in rural Wisconsin adolescents. They found that among dirts (problem prone youth), regulars (average youth), hot-shots (good social or academic performers), and jocks (athletes), youth most likely to smoke were dirts and hot-shots. A replication was performed with a Southern California cohort and also for use of smokeless tobacco. The authors hypothesized that jocks would be the main users of smokeless tobacco and identified the same groups and an additional one, skaters (skateboarders or surfers). As Mosbach and Leventhal found, cigarettes were used most by dirts. Contrary to their results, but consistent with other research, hot-shots were least likely to smoke. Contrary to prediction, skaters and dirts were more likely to use smokeless tobacco than were jocks. Data show that both tobacco forms are used by problem-prone youth. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Effects of alcohol priming on social disinhibition.

Recent studies have suggested that exposure to rudimentary alcohol cues activates mental representations of alcohol expectancies in long-term memory, thereby promoting expectancy-consistent behavior changes. However, reliance in these previous studies on self-report measures raises the possibility that prior findings were an artifact of experimental demand. The present study was aimed at ruling out this alternative explanation by reinvestigating the effects of alcohol priming on nonconsumptive behavior using an implicit measure of social disinhibition. In three experiments, participants were exposed to either alcohol or control beverage images, then asked to type as quickly as possible the first word that came to mind in response to a series of provocative (e.g., feces) and neutral (e.g., chair) stimulus words. Participants’ response times were surreptitiously measured. Results revealed that participants exposed to images of alcohol, relative to control beverages, were faster to generate free associations to provocative, but not neutral, words, suggesting enhanced social disinhibition. This effect was limited to conditions of heightened evaluation, ruling out alternative explanations based on knowledge activation or arousal. Participants reported no suspicions regarding the connection between the image viewing and free association tasks nor any awareness that their response times had been collected. Results suggest that the behavioral effects of alcohol priming do not result from demand characteristics and offer the first evidence that exposure to rudimentary alcohol-related stimuli may suffice to influence social disinhibition in a manner akin to that expected to result from actual or placebo alcohol consumption. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Responsibility to the Nonpsychologist.

Comments on an article by Leonard Krasner (see record 1963-00116-001) which discussed psychological research on behavior control and social responsibility. Krasner argues quite cogently that psychotherapy and some other psychological techniques are necessarily means of controlling the behavior of others, and may often be subtly manipulative and coercive. The commentator suggests another approach to Kranser's suggestions about how the undesirable aspects of such control may be dealt with. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

An adaptive approach to family intervention: Linking engagement in family-centered intervention to reductions in adolescent problem behavior.

This study used Complier Average Causal Effect analysis (CACE; see G. Imbens & D. Rubin, 1997) to examine the impact of an adaptive approach to family intervention in the public schools on rates of substance use and antisocial behavior among students ages 11-17. Students were randomly assigned to a family-centered intervention (N = 998) in 6th grade and offered a multilevel intervention that included (a) a universal classroom-based intervention, (b) the Family Check-Up (selected; T. J. Dishion & K. Kavanagh, 2003), and (c) family management treatment (indicated). All services were voluntary, and approximately 25% of the families engaged in the selected and indicated levels. Participation in the Family Check-Up was predicted by 6th-grade teacher ratings of risk, youth reports of family conflict, and the absence of biological fathers from the youths' primary home. Relative to randomized matched controls, adolescents whose parents engaged in the Family Check-Up exhibited less growth in alcohol, tobacco, and marijuana use and problem behavior during ages 11 through 17, along with decreased risk for substance use diagnoses and police records of arrests by age 18. (PsycINFO Database Record (c) 2010 APA, all rights reserved)