John R. Hipp

Which Came First? Toxic Facilities, Minority Move‐In, and Environmental Justice

Previous research suggests that minority residential areas have a disproportionate likelihood of hosting various environmental hazards. Some critics have responded that the contemporary correlation of race and hazards may reflect post-siting minority move-in, perhaps because of a risk effect on housing costs, rather than discrimination in siting. This article examines the disproportionate siting and minority move-in hypotheses in Los Angeles County by reconciling tract geography and data over three decades with firm-level information on the initial siting dates for toxic storage and disposal facilities. Using simple t-tests, logit analysis, and a novel simultaneous model, we find that disproportionate siting matters more than disproportionate minority move-in in the sample area. Racial transition is also an important predictor of siting, suggesting a role for multiracial organizing in resisting new facilities.

Block, Tract, and Levels of Aggregation: Neighborhood Structure and Crime and Disorder as a Case in Point:

This article highlights the importance of considering the proper level of aggregation when estimating neighborhood effects. Using a unique nonrural subsample from a large national survey (the American Housing Survey) at three time points that allows placing respondents in blocks and census tracts, this study tests the appropriate level of aggregation of the structural characteristics hypothesized to affect block-level perceptions of crime and disorder. I find that structural characteristics differ in their effects based on the level of aggregation employed. While the effects of racial/ethnic heterogeneity are fairly robust to the geographical level of aggregation, the stronger effects, when measured at the level of the surrounding census tract, suggest more dispersed networks are important for perceived crime and disorder. In contrast, economic resources only show a localized effect when aggregating to the block-level and differ based on the outcome; higher average income reduces disorder but increases crime, most likely by increasing the number of attractive targets. Additionally, the presence of broken households has a localized effect for social disorder but a more diffuse effect for perceived crime. These findings suggest the need for neighborhood studies of crime rates, as well as the broader neighborhood effects literature, to consider the mechanisms involved when aggregating various structural characteristics.

Local Solutions in the Estimation of Growth Mixture Models.

Finite mixture models are well known to have poorly behaved likelihood functions featuring singularities and multiple optima. Growth mixture models may suffer from fewer of these problems, potentially benefiting from the structure imposed on the estimated class means and covariances by the specified growth model. As demonstrated here, however, local solutions may still be problematic. Results from an empirical case study and a small Monte Carlo simulation show that failure to thoroughly consider the possible presence of local optima in the estimation of a growth mixture model can sometimes have serious consequences, possibly leading to adoption of an inferior solution that differs in substantively important ways from the actual maximum likelihood solution. Often, the defaults of current software need to be overridden to thoroughly evaluate the parameter space and obtain confidence that the maximum likelihood solution has in fact been obtained.

Social Capital, Too Much of a Good Thing? American Religious Traditions and Community Crime

Using American religious traditions as measures of bonding and bridging social capital in communities, we empirically test how these different forms of social capital affect crime rates in 3,157 U.S. counties in 2000. Our results suggest that the bonding networks evangelical Protestants promote in communities explain why counties with a greater percentage of residents affiliated with this tradition consistently have higher crime rates. Conversely, our results suggest that the bridging networks that mainline Protestants and Catholics foster in communities explain why counties with a greater percentage of residents affiliated with these traditions generally have lower crime rates. This article thus provides empirical corroboration for recent theoretical discussions that focus on how the social capital that groups cultivate in communities need not always benefit communities as a whole.

The Social Ecology of Adolescent Alcohol Misuse.

A conceptual framework based on social ecology, social learning, and social control theories guided identification of social contexts, contextual attributes, and joint effects that contribute to development of adolescent alcohol misuse. Modeling of alcohol use, suggested by social learning theory, and indicators of the social bond, suggested by social control theory, were examined in the family, peer, school, and neighborhood contexts. Interactions between alcohol modeling and social bond indicators were tested within and between contexts. Data were from a longitudinal study of 6,544 students, 1,663 of their parents, and the U.S. Census. All contexts were uniquely implicated in development of alcohol misuse from ages 11 through 17 years, and most alcohol modeling effects were contingent on attributes of social bonds.

The Simultaneous Effect of Social Distance and Physical Distance on the Formation of Neighborhood Ties

Prior studies have separately suggested the importance of physical distance or social distance effects for the creation of neighborhood ties. This project adopts a case study approach and simultaneously tests for propinquity and homophily effects on neighborhood ties by employing a full–network sample from a recently developed New Urbanist neighborhood within a mid–sized southern city. the authors find that physical distance reduces the likelihood of weak or strong ties forming, suggesting the importance of accounting for propinquity when estimating social tie formation. the authors simultaneously find that social distance along wealth reduces the likelihood of weak ties forming. Social distance on life course markers—age, marital status, and the presence of children—reduces the formation of weak ties. Consistent with the systemic model, each additional month of shared residence in the neighborhood increases both weak and strong ties. An important innovation is this studys ability to directly compare the effects of physical distance and social distance, placing them into equivalent units: a 10 percent increase in home value difference is equivalent to a 5.6 percent increase in physical distance.

The Educational Legacy of Unauthorized Migration: Comparisons Across U.S.-Immigrant Groups in How Parents’ Status Affects Their Offspring†

This research compares several national-origin groups in terms of how parents’ entry, legalization and naturalization (i.e., membership) statuses relate to their childrens educational attainment. In the case of Asian groups, the members of which predominantly come to the United States as permanent legal migrants, we hypothesize (1) that fathers and mothers statuses will be relatively homogenous and few in number and (2) that these will exert minimal net effects on second-generation attainment. For Mexicans, many of whom initially come as temporary unauthorized migrants, we hypothesize (1) that parental status combinations will be heterogeneous and greater in number and (2) that marginal membership statuses will exert negative net effects on education in the second generation. To assess these ideas, we analyze unique intergenerational data from Los Angeles on the young adult members of second-generation national-origin groups and their parents. The findings show that Asian immigrant groups almost universally exhibit similar father–mother migration statuses and high educational attainment among children. By contrast, Mexicans manifest more numerous discrepant father–mother combinations, with those in which the mother remains unauthorized carrying negative implications for childrens schooling. The paper discusses the theoretical and policy implications of the delays in incorporation that result from Mexican Americans needing extra time and resources compared to the members of other groups to overcome their handicap of marginal membership status {i.e., being more likely to enter and remain unauthorized).

Crimes of Opportunity or Crimes of Emotion? Testing Two Explanations of Seasonal Change in Crime

While past research has suggested possible seasonal trends in crime rates, this study employs a novel methodology that directly models these changes and predicts them with explanatory variables. Using a nonlinear latent curve model, seasonal fluctuations in crime rates are modeled for a large number of communities in the U.S. over a three-year period with a focus on testing the theoretical predictions of two key explanations for seasonal changes in crime rates: the temperature/aggression and routine activities theories. Using data from 8,460 police units in the U.S. over the 1990 to 1992 period, we found that property crime rates are primarily driven by pleasant weather, consistent with the routine activities theory. Violent crime exhibited evidence in support of both theories.

Enhancing the Resilience of Human–Environment Systems: a Social Ecological Perspective

Resilience studies build on the notion that phenomena in the real world should be understood as dynamic social- ecological systems. However, the scholarly community may not be fully aware that social ecology, as a conceptual framework, has a long intellectual history, nor fully cognizant of its foundational theory. In this article, we trace the intellectual roots and core principles of social ecology and demonstrate how these principles enable a broader conceptualization of resilience than may be found in much of the literature. We then illustrate how the resulting notion of resilience as transactional process and multi-capital formation affords new perspectives on diverse phenomena such as global financial crises and adaptation to environmental stresses to communities and ecosystems. A social-ecological analysis of resilience enables the study of people- environment transactions across varying dimensions, time periods, and scales. Furthermore, in its openness to experiential knowledge and action research, the social ecology framework coheres well with participative-collaborative modes of inquiry, which traverse institutional, epistemological, and scale-related boundaries.

Peer Smoking, Other Peer Attributes, and Adolescent Cigarette Smoking: A Social Network Analysis

Peer attributes other than smoking have received little attention in the research on adolescent smoking, even though the developmental literature suggests the importance of multiple dimensions of adolescent friendships and peer relations. Social network analysis was used to measure the structure of peer relations (i.e., indicators of having friends, friendship quality, and status among peers) and peer smoking (i.e., friend and school smoking). We used three-level hierarchical growth models to examine the contribution of each time-varying peer variable to individual trajectories of smoking from age 11 to 17 while controlling for the other variables, and we tested interactions between the peer structure and peer smoking variables. Data were collected over five waves of assessment from a longitudinal sample of 6,579 students in three school districts. Findings suggest a greater complexity in the peer context of smoking than previously recognized.