Social network characteristics and risky sexual and drug related behaviors among homeless young adults

Although research finds high rates of risky sexual and drug related behavior among homeless young people, little research had examined how the characteristics of their social networks encourage or constrain risky behaviors. Based on a sample of 145 homeless young adults in the Midwestern United States, results revealed that having used alcohol with at least one of their network members and the presence of more conflict was associated with engaging in a greater number of sexual risk taking behaviors. Correlates of engaging in a greater number of substance use related behaviors included having older peers within the network, having used illicit drugs with at least one network member, and the presence of more conflict. The presence of a family member in one’s network, however, was associated with fewer sexual and drug related risk behaviors. Overall, the social network characteristics of youth explained significant, additional variance beyond that of youth’s own characteristics and their early family histories.     

Dropping out of high school: Effects of close and distant friendships

Prior research highlights the role of friends in influencing whether a student completes high school. Students who drop out tend to have fewer friends, as well as friends who are less oriented toward school success. We distinguish between close and distant friendships by developing a theoretical framework which predicts close and distant friends likely have distinct effects on dropping out. Close friendships provide valuable emotional support, and forging numerous close friendships at school should decrease one’s risk of dropping out. In contrast, the characteristics of distant friends help shape students’ social identities and beliefs about “what’s normative.” Our analyses of the Add Health data set confirm our expectations. Students with more close friendships are less likely to drop out, but close friends’ characteristics are unrelated to dropping out. Distant relationships (as measured by affect and regularity of interaction) with friends who have a high risk of dropping out significantly increase a student’s own risk of dropping out.     

Neighborhood distress and school dropout: the variable significance of community context

Although a substantial body of recent research has examined the impact of neighborhood socioeconomic distress on youth socioeconomic attainment and urban social dislocations, few studies have determined under what conditions, and for what types of adolescents, neighborhood characteristics matter most. Drawing on theories of collective socialization, social capital, and social control, we develop hypotheses regarding the conditional nature of neighborhood effects on the risk of dropping out of high school, and we then test these hypotheses by estimating event history models based on data from the 1968–1993 waves of the Panel Study of Income Dynamics. We find that, among African Americans, the detrimental impact of neighborhood socioeconomic distress on school dropout has increased significantly over the past quarter-century, a probable repercussion of the increasing geographic concentration of urban poverty. The negative effect of neighborhood distress on high school completion is particularly pronounced among black adolescents from single-parent households and among white adolescents from low-income families, results broadly consistent with Wilson’s claim that exposure to neighborhood poverty reinforces the damaging consequences of individual disadvantage. Supporting the social capital perspective, among both black and white adolescents the deleterious impact of neighborhood distress on school dropout is stronger for recent in-movers than for long-term residents. The impact of neighborhood disadvantage also varies significantly by gender for both racial groups and, among whites, is stronger for younger than older adolescents. We conclude with a discussion of the implications of these findings for theories of neighborhood effects.     

基于TAM2-IDT的大学生生鲜电商消费意愿研究

近年来,生鲜电商逐渐兴起,为消费者带来了更加多样的生鲜消费模式.受制于较低的消费能力及较小的生活活动范围,大学生生鲜消费习惯与其他消费者相比,其生鲜电商普及率不高.大学生群体是未来的消费主力,校园市场有引领社会青年市场发展方向的作用.研究哪些因素影响大学生生鲜电商消费意愿,以及大学生群体消费意愿与其他群体有何不同,对生鲜电商行业发展具有重要意义.基于TAM2-IDT理论模型实证分析的结果显示,大学生生鲜电商消费意愿受感知有用性、感知信任和态度的直接影响,受感知易用性、个人创新性和社会影响的间接影响,且感知有用性和态度在其中起中介效应,其中感知信任、社会影响和个人创新性的影响作用在大学生与其他消费者之间差异明显.最后,根据研究结果对生鲜电商行业在大学校园市场中的发展提出建议.     

Factors associated with two types of child custody loss among a sample of African American mothers: A novel approach

African American families are overrepresented in the Child Welfare System; however, extant research on this phenomenon has (1) focused mostly on Caucasian or mixed-race samples and (2) has not examined informal custody arrangements alongside official child custody loss. This research addresses these gaps in the literature by examining factors associated with both official and informal child custody loss among a sample of African American mothers. Multinomial regression results show that having ever been incarcerated following a conviction increases the odds of experiencing both types of custody loss relative to no loss. Additionally, mother’s experiences of childhood victimization increase the likelihood of informal custody loss relative to no loss, while being older, past year homelessness, number of minor children, being lesbian or bisexual, crack/cocaine use, and more family social support increase the odds of official loss versus no loss. Finally, increases in social support from friends decrease the odds of official loss. Implications are discussed.     

Neighborhood characteristics, parental practices and children’s math achievement in elementary school

This paper investigates the relationships among neighborhood characteristics, education-related parental practices, and children’s academic achievement during a critical but under-studied stage of children’s educational trajectories - the elementary school years. Using a large, nationally representative database of American elementary school students - the Early Childhood Longitudinal Study - Kindergarten Cohort (ECLS-K) - and contextual data from the 2000 US Census, we examine parental practices and neighborhood characteristics at the beginning of children’s school careers (grades K-1) and their associations with math achievement through the end of the 5th grade. Findings: Net of family-level characteristics, higher levels of early education-oriented parental practices were associated with higher mathematics achievement at the end of 5th grade, while neighborhood disadvantage was associated with lower 5th grade math achievement. Families residing in high poverty, high unemployment, low-education neighborhoods employed fewer education-oriented practices with their kindergarten-first grade children, but the positive effect of such parental practices on children’s mathematics achievement was stronger for children who live in disadvantaged neighborhoods.     

The academic attitudes of American teenagers, 1990–2002: Cohort and gender effects on math achievement

Using data from the National Education Longitudinal Study of 1988 and the Education Longitudinal Study of 2002, I compare the academic attitudes of high school students from Generation X and the Millennial Generation. I then analyze the effects these attitudes have on mathematics achievement test scores. Compared to the earlier group, students in the later cohort were less likely to indicate academic reasons for attending school and largely perceived their friends as being less engaged academically. Students in both cohorts whose friends held academic values experienced an increase in math scores. The more students in the earlier cohort disagreed that they came to school for academic reasons, the more their math scores decreased; this relationship did not appear for the later cohort. Females in each cohort showed stronger academic attitudes than males; additionally, believing that popularity was important was associated with lower test scores for females, but not males, in the Millennial cohort.     

Extracurricular activities and teens’ alcohol use: The role of religious and secular sponsorship

Much research has found that more religious youth are less likely to engage in riskier health-related behaviors. However, very little research has examined the role that religion may play in shaping the health-related behaviors of secular youth. There is reason to think that more and less religious youth may gain some health-related benefits from involvement with religious organizations through activities such as basketball and volunteering. Using two waves of data from the National Study of Youth and Religion, this study finds that involvement in religion-supported secular activities is associated with less alcohol use for all involved teens. The number of friends who belong to a religious youth group, in part, explains the relationship. Conversely, network overlap between parents and teens, the number of friends who drink or use drugs, and having an adult confidant from a religious group are not mechanisms that mediate the relationship.     

Everybody's Doin' It (Right?): Neighborhood Norms and Sexual Activity in Adolescence

A neighborhood’s normative climate is linked to, but conceptually distinct from, its structural characteristics such as poverty and racial/ethnic composition. Given the deleterious consequences of early sexual activity for adolescent health and well-being, it is important to assess normative influences on youth behaviors such as sexual debut, number of sex partners, and involvement in casual sexual experiences. The current study moves beyond prior research by constructing a measure of normative climate that more fully captures neighborhood norms, and analyzing the influence of normative climate on behavior in a longitudinal framework. Using recently geo-coded data from the Toledo Adolescent Relationships Study (TARS), we analyze the effect of normative climate on adolescents’ sexual behaviors. Results indicate that variation in neighborhood normative climates increases adolescents’ odds of sexual debut and casual sex, and is associated with their number of sex partners, even after accounting for neighborhood structural disadvantage and demographic risk factors.     

Does residential mobility improve educational outcomes? Evidence from the Netherlands

This paper explores the impact of residential mobility on educational outcomes. By considering a large Dutch city with substantial internal residential mobility, we examine how residential mobility influences the decision of students to drop out of school. The paper exploits a rich administrative dataset with extensive information on educational, individual, family, housing and moving characteristics of students. It combines a matching design with a multivariate regression analysis, such that the evaluation draws on a well-comparable control group for the treated students. Accounting for individual, family, educational, neighborhood and housing characteristics, as well as for school and year fixed effects, we observe that residential mobility increases the probability of school dropout in the first few years after moving. The estimated effect changes, however, to a lower risk of early school leaving after an initial period, and then changes again to a higher risk after 6 years. This effect remains, regardless the level of education the students attended, or whether the student moves to a better or a worse neighborhood.     

Intermediate peer contexts and educational outcomes: Do the friends of students' friends matter?

Sociologists of education have long been interested in the effects of peer relations on educational outcomes. Recent theory and research on adolescence suggest that peers on the boundaries of students' friendship networks may play an important role in shaping behaviors and educational outcomes. In this study, we examine the importance of a key “intermediate peer context” for students' outcomes: the friends of a student's friends. Our findings indicate both friends' and friends' friends' characteristics independently predict students' college expectations and their risk of dropping out of high school (although only friends' characteristics predict GPA). Our models suggest the magnitude of students' friends-of-friends’ characteristics are at least as large their friends' characteristics. Together, the association between the peer context and students outcomes is considerably larger when accounting for both the characteristics of students' friends and the friends of their friends.     

Population size, perceived threat, and exclusion: a multiple-indicators analysis of attitudes toward foreigners in Germany

The major objective of the present research is to examine the long-standing theoretical proposition that hostility and discriminatory attitudes toward out-groups are likely to rise with relative size of the out-group population. Using data from The German General Social Survey (ALLBUS, 1996) we provide, for the first time, an examination of the impact of both actual and perceived size of the foreign population on discriminatory attitudes toward foreigners. Specifically, by using a multiple-indicators analytical model, we examine the theoretical proposition that perceived threat posed by an out-group population mediates the relations between size of the out-group and exclusionary attitudes toward the out-group. The analysis does not support the theoretical expectation that actual size of the foreign population in the locale is likely to increase either perception of threat or exclusionary attitudes. Perceived size, however, is found to be associated, as expected, with perceived threat, and perceived threat is found to mediate the relations between perceived size and support for exclusionary practices against foreigners—the higher the perceived size, the more pronounced are both the threat and anti-foreigner attitudes. The findings and their significance are discussed in the light of sociological theories on the relations between minority size and discrimination.     

Race, social class, and student engagement in middle school English classrooms

Student level data on participation in classroom discourse and student effort on assignments in 117 middle school English classrooms are used to investigate the social determinants of student engagement in classroom instruction. Social identity theories of race, social class, and attachment to school, and research in the social psychology of achievement motivation both suggest differential levels of student engagement among diverse student groups. Using multilevel models, the author investigates the relationship between classroom context and students’ levels of engagement. Levels of engagement among black and low SES students are mostly insensitive to classroom context, suggesting there is little collective action directed at fostering anti-school norms among these student groups. However, consistent with research in the social psychology of achievement motivation, students who begin class with weaker reading and writing skills are less likely to be engaged, setting the stage for a cycle of reduced achievement growth.     

Girls’ self-efficacy in the context of neighborhood gender stratification

Scholars have linked neighborhood characteristics to self-efficacy, but few have considered how gender factors into this association. We integrate literature on neighborhoods, gender stratification, and self-efficacy to examine the association between women's relative resources among neighborhood residents and adolescents' self-efficacy. We hypothesize that girls report more self-efficacy when they reside in neighborhoods where women have more socioeconomic resources relative to men. We test this hypothesis using data from the Project on Human Development in Chicago Neighborhoods and the 1990 Census. Results from multilevel regression models with gender-interacted effects indicate the neighborhood level of women's relative resources was not associated with boys' self-efficacy. However, girls reported higher self-efficacy when women's relative resources in their neighborhoods were greater. This association persisted after including potential individual- and neighborhood-level confounding variables. Our study underscores the importance of attending to gendered processes when understanding how neighborhoods impact youth.     

Eyes on the Block: Measuring Urban Physical Disorder Through In-Person Observation

In this paper, we present results from measuring physical disorder in Los Angeles neighborhoods. Disorder measures came from structured observations conducted by trained field interviewers. We examine inter-rater reliability of disorder measures in depth. We assess the effects of observation conditions on the reliability of reporting. Finally, we examine the relationships between disorder, other indicators of neighborhood status, and selected individual outcomes.Our results indicate that there is considerable variation in the level of agreement among independent observations across items, although overall agreement is moderate to high. Durable indicators of disorder provide the most reliable measures of neighborhood conditions. Circumstances of observation have statistically significant effects on the observers’ perceived level of disorder. Physical disorder is significantly related to other indicators of neighborhood status, and to children’s reading and behavior development.This result suggests a need for further research into the effects of neighborhood disorder on children.     

基于产品信息欺诈的消费者感知风险测量模型研究

产品信息欺诈是电子商务欺诈的典型代表,提高消费者对产品信息欺诈的风险感知,已成为保障网络交易空间安全的关键。为度量消费者在电商交易中对产品信息欺诈的感知风险,基于产品信息欺诈特征,提出了感知风险分为产品评价风险、价格风险、推荐信息风险、配套服务风险和产品信息展示风险等五个维度,开发了“我认为商品评价不是消费者做出的真实评价,是商家刷的”等24个测量题项。建构并验证五维度一阶因子模型、单维度二阶因子五维度一阶因子模型的感知风险结构的测量模型,提出了后者的测量结构更优,有助于对消费者感知行为进行量化研究。     

SPATIAL AND TEMPORAL DIMENSIONS OF NEIGHBORHOOD EFFECTS ON HIGH SCHOOL GRADUATION

Research into the effects of neighborhood characteristics on children’s behavior has burgeoned in recent years, but these studies have generally adopted a limited conceptualization of the spatial and temporal dimensions of neighborhood effects. We use longitudinal data from the Panel Study of Income Dynamics and techniques of spatial data analysis to examine how both the socioeconomic characteristics of extralocal neighborhoods—neighborhoods surrounding the immediate neighborhood of residence—and the duration of exposure to disadvantaged neighborhoods throughout the childhood life course influence the likelihood of graduating from high school. Among blacks and whites, socioeconomic advantage in the immediate neighborhood increases the likelihood of completing high school, but among whites higher levels of socioeconomic advantage in extralocal neighborhoods decrease high school graduation rates. Extralocal neighborhood advantage suppresses the influence of advantage in the immediate neighborhood so that controlling for extralocal conditions provides stronger support for the neighborhood effects hypothesis than has previously been observed. Exposure to advantaged neighborhoods over the childhood life course exerts a stronger effect than point-in-time measures on high school graduation, and racial differences in exposure to advantaged neighbors over the childhood life course help to suppress a net black advantage in the likelihood of completing high school.     

Social costs to trying hard in high school: Differences by race-ethnicity

There is debate whether social costs to trying hard in school are more widespread among black and Latino students than white or Asian students. Studies assessing a burden of “acting white” among black and Latino students have examined how the correlation between GPA and popularity or harassment varies across racial-ethnic groups. Yet, there has been little attention to whether students are aware of these costs or if social costs deter achievement. Using data from the High School Longitudinal Study of 2009, we investigated students’ perceptions of whether they would be harassed or unpopular for trying hard in their mathematics and science classes. We found black, Latino, and Asian students perceived lower risk of experiencing social costs for trying hard than white students. Perceptions of social costs in 9th grade were associated with less rigorous mathematics course-taking, but not lower mathematics test scores or STEM GPA, later in school.     

College-bound friends and college application choices: Heterogeneous effects for Latino and White students

Friends are among the most influential social forces affecting adolescent behavior, yet little work has focused on the influence of friends on the decision to apply to college. Using data from the senior cohort of the Texas Higher Education Opportunity Project, we employed propensity score matching with sensitivity analyses to investigate links between having college-oriented friends and applying to college. We found that college-oriented friends increased the likelihood of applying to any college and to 4-year colleges, both for White and Latino students. However, Latino students benefited less from college-oriented friends compared to White students. Our findings suggest that college-choice models should more directly account for the influence of friends in applying to college, taking account of racial and ethnic differences, and future research should explore why Latino students benefit less.     

Who gets evicted? Assessing individual,neighborhood, and network factors

The prevalence and consequences of eviction have transformed the lived experience of urban poverty in America, yet little is known about why some families avoid eviction while others do not. Applying discrete hazard models to a unique dataset of renters, this study empirically evaluates individual, neighborhood, and social network characteristics that explain disparities in displacement from housing. Family size, job loss, neighborhood crime and eviction rates, and network disadvantage are identified as significant and robust predictors of eviction, net of missed rental payments and other relevant factors. This study advances urban sociology and inequality research and informs policy interventions designed to prevent eviction and stem its consequences.