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381.
Species that successfully inhabit urban ecosystems are rare, and urbanisation often drives localised extinctions of native species. Nonetheless, some species take advantage of the novel conditions available in cities and increase in abundance. Trends in the abundance and distribution of species in urban areas have received much attention, but the precise elements of urban ecosystems that affect the survival of urban-dwelling species are largely unknown. Animals that successfully exploit urban environments may do so because of increases in the availability of resources or habitats. Here we assess the effects of anthropogenic landscapes and prey abundance on the persistence of an orb-weaving spider, Nephila plumipes. We assessed spider persistence for six months in situ along an urban gradient in Sydney. We then transplanted spiders from a common garden into sites along the gradient, monitored their persistence in the new environment and measured a suite of environmental variables at local and landscape scales. The abundance of prey was closely linked with spider persistence, in both the survey and the transplant experiment, and was positively associated with anthropogenic habitats. The surveyed spiders survived longer when located closer to the coast and transplanted spiders persisted longer in smaller sites with more impervious surfaces and reduced vegetation cover. Our study shows that urbanisation has a strong effect on potential prey abundance and can lead to increased persistence of N. plumipes, demonstrating the broad impacts that habitat disturbance can have on the life history and trophic interactions of city-dwelling animals. 相似文献
382.
Laura Castro‐Schilo Emilio Ferrer Maciel M. Hernández Rand D. Conger 《Journal of research on adolescence》2016,26(4):753-768
We used a longitudinal community study of 674 grade school children (Grades 5, 6, 7, and 8; 337 males, 337 females) of Mexican origin to examine outcomes of school attachment. Attachment to school is important in this population given the high level of school dropout rates of Mexican‐origin students. Results indicated that, on average, school attachment from fifth to sixth grade remains stable, but declines from sixth to eighth grade. Boys had lower levels of school attachment at fifth grade but followed similar patterns of change as girls did. Attachment to teachers, peer competence, school aspirations and expectations, and substance‐use cognitions emerged as longitudinal outcomes of level or changes in school attachment. Gender moderated associations of school attachment. 相似文献
383.
Association of Demanding Kin Relations With Psychological Distress and School Achievement Among Low‐Income,African American Mothers and Adolescents: Moderating Effects of Family Routine 下载免费PDF全文
Ronald D. Taylor 《Journal of research on adolescence》2016,26(4):638-644
Association of demanding kin relations and family routine with adolescents' psychological distress and school achievement was assessed among 200 low‐income, African American mothers and adolescents. Demanding kin relations were significantly associated with adolescents' psychological distress. Family routine was significantly related to adolescents' school achievement. Demanding kin relations were negatively associated with school achievement for adolescents from families low in routine, but unrelated to achievement for adolescents in families high in routine. Additional research is needed on poor families and their social networks. 相似文献
384.
Infant–Mother and Infant–Caregiver Emotional Relationships: Process Analyses of Interactions in Three Contemporary Childcare Arrangements 下载免费PDF全文
Emotional relationships in infant–mother dyads in families where mothers provided full‐time childcare were compared with those of families where mothers used in‐home childcare providers and family childcare providers (N = 245). Infant relationships with childcare providers were also studied. Emotional relationships were adequate in all three childcare arrangements, but infant–mother dyads in in‐home childcare arrangements displayed healthier emotional relationships than infant–mother dyads in mother care arrangements; no differences in the health of emotional relationships with infants emerged among the three types of childcare providers (mother care, in‐home childcare, family childcare). Infant–mother dyads in in‐home childcare arrangements also displayed healthier emotional relationships than infant–in‐home childcare caregiver dyads, but infant–mother and infant–caregiver dyads were comparable in family childcare families. Emotional relationships in infant–mother and infant–caregiver dyads were not correlated, regardless of the type of childcare. 相似文献
385.
Few studies have examined male clients who pay for sex with male escorts. In 2012, clients (n = 495) completed an online survey about their most recent hire. Most clients were White/Caucasian (87.7%), HIV negative (89.5%), employed full time (71.1%), single (58.6%), with a mean age of 54. Three-quarters of clients were gay identified, 18% bisexual, and 4% heterosexual. The median rate paid to escorts was $250 per hour with a modal appointment time of 1 to 2 hours (41.6%). Oral sex was common (80% gave, 69% received), 30% reported anal insertive sex, and 34% reported anal receptive sex. In total, few (12%) reported unprotected anal sex. Satisfaction with encounters was high. Receptive unprotected anal intercourse was associated with greater satisfaction in bivariate analyses but not in multivariable analyses. In a multivariable model, having receptive anal sex (whether protected or not) and rating the financial cost of the encounter as “worth it” were significantly associated with greater satisfaction. This study contributes to a scarce literature regarding clients of male sex workers and, in particular, provides information on the characteristics of men hiring men for sexual services, behavioral event-level data about their encounters, and analysis of factors directly associated with client satisfaction. 相似文献
386.
This study examines the means by which privileged mothers comply to the dominant expectations of intensive mothering. As women struggle with the complicated, and often contradictory, experience of meeting the demands of the dominant ideology, we examine the mediating role of an institution, in this case the most popular maternal support organization in the United States—Mothers of Preschoolers (MOPS). Organizations such as MOPS create an ideal cultural site for reinforcing ideologies that promulgate unattainable standards of perfection. Data were collected from observations of two MOPS groups, in‐depth interviews, and ethnographic content analysis of organizational materials. This dominant organization supports mothers by discouraging them from questioning the expectations of intensive mothering or considering alternative methods of parenting, which reinforces intensive mothering as the gold standard of parenting. 相似文献
387.
Although research has demonstrated the manifestation of racial bias by measuring overt attitudes and behaviors, there has been little examination of the subtle nonverbal cues that may also characterize such bias. The present study investigates implicit racial bias by analyzing nonverbal behaviors of individuals shown video of a criminal suspect whose ethnic identity is manipulated to be Black or White. Participants appeared significantly more uncertain about what they were saying when describing the White suspect than when describing the Black suspect. Participants were also more likely to display “open” posture when describing the Black suspect but “closed” posture (e.g., crossed arms) when describing the White suspect. The results indicate that biases in attitudes and beliefs might be reliably detected and measured through body language. The findings are discussed in terms of how nonverbal behaviors may reveal more subtle forms of prejudice and miscommunication. Contextual correlations between specific nonverbal behaviors and affective states are also discussed. 相似文献
388.
Jacob D. Christenson D. Russell Crane Katherine M. Bell Andrew R. Beer Harvey H. Hillin 《Journal of marital and family therapy》2014,40(3):272-286
Despite a number of studies investigating the effect of pharmacotherapy on treatment costs for schizophrenia patients, there has been little attention given to the effect of family intervention. In this study, data from the Kansas Medicaid system were used to analyze healthcare costs for 164 schizophrenia patients who had participated in family intervention. Structural equation modeling was used to test two competing views of the role of family intervention in treatment. The results showed that a model including direct and indirect effects of family intervention provided a better fit to the data. Family intervention had a significant indirect effect on general medical costs (through other psychological treatment) that showed a savings of $586 for each unit increase in the provision of these services. In addition, the total indirect effects for family intervention showed a $580 savings for general medical costs and $796 for hospitalization costs (for each unit increase). 相似文献
389.
Frank M. Dattilio Fred P. Piercy Sean D. Davis 《Journal of marital and family therapy》2014,40(1):5-16
Evidenced‐based approaches continue to grow in the field of family therapy. However, practicing family therapists do not always embrace these approaches. In this article, we explore factors contributing to practitioners' concerns with evidence‐based treatments and suggest a broader, more clinically palatable view of evidenced‐based treatment. We also suggest how family therapy researchers, practitioners, and educators might begin to close the researcher–clinician divide in the best interest of all concerned. 相似文献
390.
In dominant theories of criminal desistance, marital relationship formation is understood to be a key “turning point” away from deviant behavior. Empirical studies supporting this claim have largely focused on the positive role of marriage in men's desistance from crime, and relatively few studies have examined the role that nonmarital relationships may play in desistance. Drawing on 138 longitudinal in‐depth interviews with 22 men and women reentering society from prison, this article extends the scope of desistance research by additionally considering the significance of more fleeting and fluid relationships, and the diverse processes through which romantic relationships of all sorts are linked with criminal behaviors. We present an empirically based typology detailing six processes, grouped within three conceptual categories, through which romantic relationships had their effects. These pathways include material circumstances, social bonds and interactions, and emotional supports and stressors. We also consider gender differences in these processes. While more tenuous bonds to marginally conventional partners would seem to exert little effect, as one of the few relationships and social roles available to many former prisoners, we found that they wielded important influence, if not always in a positive direction. 相似文献