Statistical power of the social network autocorrelation model

The network autocorrelation model has become an increasingly popular tool for conducting social network analysis. More and more researchers, however, have documented evidence of a systematic negative bias in the estimation of the network effect (ρ). In this paper, we take a different approach to the problem by investigating conditions under which, despite the underestimation bias, a network effect can still be detected by the network autocorrelation model. Using simulations, we find that moderately-sized network effects (e.g., ρ = .3) are still often detectable in modest-sized networks (i.e., 40 or more nodes). Analyses reveal that statistical power is primarily a nonlinear function of network effect size (ρ) and network size (N), although both of these factors can interact with network density and network structure to impair power under certain rare conditions. We conclude by discussing implications of these findings and guidelines for users of the autocorrelation model.     

From foster care to juvenile justice: Exploring characteristics of youth in three cities

Children placed in foster care are at risk for becoming involved with the juvenile justice system. This study documents the rates at which children involved with foster care enter the juvenile justice system (crossover or dually involved), and the factors associated with this risk. We utilize multiple birth cohorts and prospective, longitudinal data from birth to maturity separately in three major American cities. Analyses consider integrated administrative records from multiple birth cohorts representing populations in Cook County (Chicago; N = 26,003), Cuyahoga County (Cleveland; N = 10,284), and New York City (N = 13,065). Crossover rates ranged from 7 to 24%. African American males, and children who experienced congregate care were at highest risk for juvenile justice involvement. Older age at first foster care placement signaled progressively greater risk, as did more foster care spells for those first placed as infants. We discuss findings in terms of developmental theory, and as actionable intelligence to inform prevention, practice, and policy.     

Fundamental principles of network formation among preschool children

The goal of this research was to investigate the origins of social networks by examining the formation of children's peer relationships in 11 preschool classes throughout the school year. We investigated whether several fundamental processes of relationship formation were evident at this age, including reciprocity, popularity, and triadic closure effects. We expected these mechanisms to change in importance over time as the network crystallizes, allowing more complex structures to evolve from simpler ones in a process we refer to as structural cascading. We analyzed intensive longitudinal observational data of children's interactions using the SIENA actor-based model. We found evidence that reciprocity, popularity, and triadic closure all shaped the formation of preschool children's networks. The influence of reciprocity remained consistent, whereas popularity and triadic closure became increasingly important over the course of the school year. Interactions between age and endogenous network effects were non-significant, suggesting that these network formation processes were not moderated by age in this sample of young children. We discuss the implications of our longitudinal network approach and findings for the study of early network developmental processes.     

Examining implementation and preliminary performance indicators of veterans treatment courts: The Kentucky experience

Veterans’ Treatment Courts (VTCs) are posited as a solution to offer rehabilitation for veterans involved in the criminal justice system. Despite the pervasive implementation of VTCs, there is little research focused specifically on VTC implementation and outcomes, which are based on other problem-solving court models such as drug court. The current study presents qualitative process evaluation data from key stakeholders (n = 21) and veteran participants (n = 4) to show accomplishments, challenges, and lessons learned during first-year implementation at two VTC sites. Quantitative performance data is also presented on veteran participants (n = 19) served during the first year to show: types of services, monitoring, judicial interaction, sanctions/therapeutic responses, and rewards, as well as preliminary data on recidivism. Qualitative data, from both key stakeholders and veteran participants, suggests that offering rehabilitation via various program components, services/referrals, and accountability are critical to the success of the VTC. Data also provides valuable lessons learned for VTC implementation including communication, collaboration, information/protocols, and resources. Performance data shows that a variety of services are utilized and that frequent judicial interaction, drug testing, and sanctions are cornerstones of the VTC. Implications and future directions for research are discussed.     

Development & maintenance of social support among aged out foster youth who received independent living services: Results from the Multi-Site Evaluation of Foster Youth Programs

This study uses secondary data from the Multi-Site Evaluation of Foster Youth Programs, a randomized controlled trial of four independent living programs for youth in foster care. The subject of this investigation is the Life Skills Training Program (LST) of Los Angeles County, CA. We had three interrelated aims: (1) Evaluate the effectiveness of the LST program as compared to services as usual on the change in social support over time; (2) Examine the differences over time in social support by race and ethnicity among LST participants; and (3) Investigate the explanatory value of prosocial activities, educational involvement, current living arrangement, employment, victimization experiences, placement instability, and behavioral health symptomology on changes in social support over time among LST participants. We employed multilevel longitudinal modeling to estimate growth in social support over three time points (baseline, first follow-up, and second follow-up) among 482 youth (n = 234 LST; n = 248 control). We found a significant reduction in social support across the three time points. But, there was no difference in the social support trajectory between the LST and control groups. In addition, no racial/ethnic difference in the social support trajectory was detected. Results underscore the need to critically examine how independent living programming is intended to increase social support and whether modifying these practices can improve promotion and maintenance of social support for youth who age out of foster care.     

Evolutionary Process of Social Capital Formation through Community Currency Organizations: The Japanese Case

Community currency systems are said to influence the revival of communities by promoting either local economic growth or social capital accumulation. However, no empirical studies have examined the multiple competing mechanisms for providing social support through transactional networks among participants. The current study connects network structural concepts to theories of social capital, transaction costs, homophily, and resource dependency at multiple levels and evaluates transactional relationships for community rebuilding and local economic development. We examine the evolutionary process of dynamic networks among local residents or organization members with network configurations in one of the largest Japanese community currency systems, “Peanuts.” Using longitudinal network data over 12 years for approximately 1400 actors, we conclude that the evolution and achievement of transactional network dynamics and partner selections differ between the two groups of participants: individual members and organization members. We also provide practical implications for sustaining participants’ transactions and commitment.     

A cross-lagged model of the relationship between violent video game exposure and moral disengagement in middle school and high school students

Previous studies have proved that violent video game exposure might have an association with moral disengagement; however, the directionality of this correlation remains unclear. Therefore, we examined the reciprocal effects between violent video game exposure and moral disengagement in a longitudinal study. The sample included 1393 adolescents (48.7% boys) in the seventh (middle school students, n = 694, M_age = 13.15 years) and tenth (high school students, n = 699, M_age = 15.93 years) grades at six Chinese secondary schools. The results showed that high school students' levels of moral disengagement were higher than those of middle school students, and violent video game exposure was positively associated with moral disengagement. The cross-lagged panel model suggested that violent video game exposure predicted moral disengagement (six months later) in all participants, with a slightly stronger effect in middle school students. The finding also indicated differences in the development of perspective regarding the association between violent video game exposure and moral disengagement, which observed a predictive effect for middle school students but a lagged effect for high school students. Thus, different preventions and interventions should be distinguished for middle school and high school students.     

Parental and peer attachment and adolescents' behaviors: The mediating role of psychological suzhi in a longitudinal study

We examined whether psychological suzhi mediated the associations between attachment (paternal, maternal, and peer) and young adolescents' behavior (internalizing, externalizing, and prosocial) in a longitudinal study. Psychological suzhi reflects the positive psychological traits that facilitate adolescents' positive adaptation to the school and social environment. Five hundred and ninety-five junior high school students (48% male; aged 11–15 years, M = 12.86 years, SD = 0.71) completed measures of attachment and psychological suzhi at Times 1 and 2 (a six-month interval), while students' parents completed measures of adolescents' behavior at Time 3 (another six months later). We observed significant longitudinal correlations between attachment, psychological suzhi, and behavior. Prospective analyses using bootstrapping demonstrated significant indirect effects of attachment on adolescent behavior via psychological suzhi. These findings highlighted the importance of attachment and psychological suzhi as protective factors in the developmental course of early adolescents' behavior.     

Using a community-based participatory research approach to evaluate resident predictors of involuntary exit from permanent supportive housing

ObjectiveThe aim of this study was to determine an association between resident characteristics at time of entry to permanent supportive housing and exit status.MethodsA community-based participatory research (CBPR) approach was the guiding framework for the design, implementation and evaluation of this project. This retrospective observational study used an administrative data source from a local permanent supportive housing provider to compare resident characteristics among those who left housing voluntarily or involuntarily.ResultsThe population based sample (n = 407) was comprised of 51% males and 47% African-Americans with a mean age of 40 years (SD = 11.8). Involuntary exits (IEs) occurred in 40% of the sample (n = 166). IE was less likely with receipt of mainstream benefits, compared to employment income (O.R. = .546, p = .032). IE was more likely for residents self-identifying as African-American (O.R. = 1.56, p = .037) and when children resided in the household (O.R. = 2.03, p = .013).ConclusionsDespite limitations of community-derived data, findings suggest that supportive housing providers consider income source and family status when designing interventions to decrease IEs. A CBPR approach is a promising framework to guide evaluation efforts for supportive housing programs.     

Factors that influence parent recruitment into prevention programs in early childhood: A concept map of parents', practitioners', and administrators' points of view

Given that parents are the main carriers of change in their child, their participation in programs for preventing behavior problems in early childhood represents a key element in ensuring the success of the intervention. That said, although at-risk families benefit the most from this type of program, they are identified as being hard to reach. This study aims at identifying the factors that influence parent recruitment based on the points of view of the actors concerned. To this end, a concept mapping operation was performed, which involved parents (n = 19), practitioners (n = 19), and administrators (n = 13) from community and public organizations. The participants generated 131 statements to complete the following sentence: In your opinion, parents would enroll more in prevention activities for their child if…. These 131 statements were classified into 12 groups representing the factors that influence parent recruitment, all of which were considered relatively important (between 3.51 and 4.42 on 5). The participants also agree on an understanding of recruitment that tends toward an ecological model. This study shows that parent recruitment into prevention programs targeting behavior problems in early childhood is complex and multifactorial (including factors that concern parents, practitioners, services, organizations, and policies). Because the map shows that the influencing factors in recruitment appear to be interrelated, they should all be considered to increase the chances of reaching at-risk families.     

Ethnic segregation of friendship networks in school: Testing a rational-choice argument of differences in ethnic homophily between classroom- and grade-level networks

Adolescents’ school-based friendship networks tend to be segregated along ethnic lines. But few studies have examined whether variation in network boundaries affects the degree of ethnic friendship segregation. We use rational-choice theory to argue that ethnic homophily is more pronounced for friendships between classrooms than for those within classrooms. We empirically test this hypothesis using two-wave German panel data (N = 1258) and stochastic actor-oriented models (RSiena). In line with our theoretical argument, we find that the tendency to form same-ethnic friendships is indeed stronger at the grade level, which translates into stronger ethnic segregation in friendship networks at the grade level than at the classroom level. Implications for research on ethnic segregation in school-based friendship networks are discussed.     

Wait until your father gets home? Mother's and fathers’ spanking and development of child aggression

This study examined whether fathers’ and mothers’ spanking contributed to development of child aggression in the first 5 years of life. We selected parents (N = 1,298) who were married or cohabiting across all waves of data collection. Cross-lagged path models examined fathers’, mothers’, and both parents’ within-time and longitudinal associations between spanking and child aggression when the child was 1, 3, and 5 years of age. Results indicated that mothers spanked more than fathers. When examining fathers only, fathers’ spanking was not associated with subsequent child aggression. When examining both parents concurrently, only mothers’ spanking was predictive of subsequent child aggression. We found no evidence of multiplicative effects when testing interactions examining whether frequent spanking by either fathers or mothers was predictive of increases in children’s aggression. This study suggests that the processes linking spanking to child aggression differ for mothers and fathers.     

The effect of density on the level of bias in the network autocorrelation model

Researchers interested in the effects of social network ties on behavior are increasingly turning to the network autocorrelation model, which allows for the simultaneous computation of individual-level and network-level effects. Earlier research, however, had pointed to the possibility that the maximum likelihood estimates used to compute the network autocorrelation model yielded negatively biased parameter estimates. In this paper we use simulations to examine whether – and the conditions under which – a negative bias exists. We show that the network parameter estimate ρ is negatively biased under nearly all conditions, and that this bias becomes more severe at higher levels of both ρ and network density. We conclude by discussing the implications of these findings for researchers planning to use the network autocorrelation model.     

A cross-national study on adolescent substance use: Intentions,peer substance use,and parent-adolescent communication

This longitudinal two-wave cross-national study investigated whether intentions, friends' substance use, and parent-adolescent substance-use specific communication predict adolescent alcohol and cannabis use 1 year later, while estimating reversed links. The temporal order between these two substances was also examined. We used multi-group cross-lagged panel modeling on data from 2 ethnically and socioeconomically diverse samples: Sint Maarten (N = 350; M_age = 14.19) and the Netherlands (N = 602; M_age = 13.50). Results showed that in the Netherlands, cannabis use predicts more subsequent problems (alcohol use, intention to use cannabis, and affiliation with cannabis-using friends). But for Sint Maarten, alcohol use predicts more subsequent problems (cannabis use, intention to use alcohol, and affiliation with alcohol-using friends). These opposing results demonstrate that caution is warranted when generalizing results across countries.     

Barriers to Help-seeking for a Gambling Problem: The Experiences of Gamblers Who Have Sought Specialist Assistance and the Perceptions of Those Who Have Not

This paper presents barriers to help-seeking data as reported by users of a national gambling helpline (help-seekers, HS, N = 125) as well as data pertaining to perceived barriers to seeking help as reported by gamblers recruited from the general population (non-help-seekers, NHS, N = 104). All data were collected via a structured, multi-modal survey. When asked to identify actual or perceived barriers to seeking help, responses indicative of pride (78% of HS participants, 84% of NHS participants), shame (73% of HS participants, 84% of NHS participants) or denial (87% of NHS participants) were most frequently reported. These three factors were also most often identified as the real or perceived primary barrier to help-seeking (collectively accounting for 55% of HS, and 60% of NHS, responses to this question) and were the only barriers to be identified by more than 10% of either HS and NHS participants without prompting. It was of note, however, that participants in both groups identified multiple barriers to help-seeking (mean of 6.7 and 12.2, respectively) and that, when presented with a list of 21 possible barrier items, NHS participants endorsed 19 of the listed items significantly more often than their HS counterparts. The implications of these findings, with respect to promoting greater or earlier help-seeking activity amongst problem gamblers, are discussed.

An exploratory comparison of name generator content: Data from rural India

Since the 1970s sociologists have explored the best means for measuring social networks, although few name generator analyses have used sociocentric data or data from developing countries, partly because sociocentric studies in developing countries have been scant. Here, we analyze 12 different name generators used in a sociocentric network study conducted in 75 villages in rural Karnataka, India. Having unusual sociocentric data from a non-Western context allowed us to extend previous name generator research through the unique analyses of network structural measures, an extensive consideration of homophily, and investigation of status difference between egos and alters. We found that domestic interaction questions generated networks that were highly clustered and highly centralized. Similarity between respondents and their nominated contacts was strongest for gender, caste, and religion. We also found that domestic interaction name generators yielded the most homogeneous ties, while advice questions yielded the most heterogeneous. Participants were generally more likely to nominate those of higher social status, although certain questions, such as who participants talk to uncovered more egalitarian relationships, while other name generators elicited the names of social contacts distinctly higher or lower in status than the respondent. Some questions also seemed to uncover networks that were specific to the cultural context, suggesting that network researchers should balance local relevance with global generalizability when choosing name generators.     

Looking for sufficient change: Evaluation of counsellor training for STI syndromic management in India

In India, public health care of Sexually Transmitted Infections is delivered through Designated STI/RTI Clinics (DSRCs) using syndromic management. This paper describes efforts, over three years, to improve in-service training for counsellors positioned at DSRCs—using a data approach. The programme managers realised, through rigorous monitoring of initial induction training reports that, while knowledge and attitudes of most trainees had improved as evident from t-tests, at least one-quarter scored worse on post-training assessments (n = 859). Therefore, they undertook a survey using a competency approach to diagnose what critical competencies are influenced through training: counselling skills, risk reduction suggestions, labelling male and female anatomy, record-keeping and STI patient education (n = 132). Survey results demonstrated that trainees failed to pass a two-thirds cutoff score in most competencies. These findings led the programme managers to modify training and implement tighter quality measures. In the second round of training – refresher training – outcomes on competency assessments before and after training showed more acceptable performance (n = 833). The paper describes how programme managers, after an acceptance of such initial short-comings, developed customized assessments when literature provided limited guidance and how they worked to achieve change that was acceptable for programme needs.