The Effectiveness of a Parents as Teachers Home Visitation Program on School Readiness: An Application of Complier Average Causal Effect Analysis.

PURPOSE: The purpose of this study is to evaluate an encouragement trial of a Parents as Teachers (PAT) home visitation intervention on the school readiness of preschool children using an innovative analysis to address issues of selective enrollment. METHOD: Families were given the opportunity to enroll in a PAT program through a randomized lottery. The PAT program is assessed using standardized measures of school readiness before and after the two-year program. A comparison of three different analyses is used to evaluate the program - Average Treatment Effect (ATE) analysis, Intent-to-Treat (ITT) analysis, and Complier Average Causal Effect (CACE) analysis. CACE is an innovative analysis developed specifically to diagnose bias arising from selective enrollment in the context of an encouragement trial. RESULT: All three analyses (ATE, ITT, and CACE) provide statistically significant evidence of an effective PAT program. However, the effect sizes for the CACE analysis are over twice as large as the other two analyses. The Cohen's D for CACE is .934 compared to .424 for ATE and .381 for ITT. CONCLUSION: This study provides evidence of an effective PAT program. The comparison of ATE, ITT, and CACE analyses reveals the potential for meaningful under-reporting of the program's impact if selective enrollment is ignored. CACE analysis demonstrates how selective enrollment can bias evaluations of home visitation interventions in general.

Intergenerational Neighborhood Attainment and the Legacy of Racial Residential Segregation: A Causal Mediation Analysis.

Advances in mediation analysis are used to examine the legacy effects of racial residential segregation in the United States on neighborhood attainments across two familial generations. The legacy effects of segregation are anticipated to operate through two primary pathways: a neighborhood effects pathway and an urban continuity pathway. The neighborhood effects pathway explains why parent's exposure to racial residential segregation during their family-rearing years can influence the residential outcomes of their children later in life. The urban continuity pathway captures the temporal consistency of the built and topographical environment in providing similar residential opportunities across generations. Findings from the Panel Study of Income Dynamics and U.S. Census data indicate that the legacy effect of racial residential segregation among black families operates primarily through the neighborhood effects that influence children growing up. For white families, there is less support for the legacy effects of segregation. The findings are supported by a comprehensive mediation analysis that provides a formal sensitivity analysis, deploys an instrumental variable, and assesses effect heterogeneity. Knowledge of the legacy of segregation moves neighborhood attainment research beyond point-in-time studies of racial residential segregation to provide a deeper understanding into the ways stratified residential environments are reproduced.

Immigration and earnings inequality in America's new small-town destinations.

Research on the relationship between immigrant population concentration and earnings inequality is divided between two perspectives. Supply-side arguments maintain that areas attracting large numbers of immigrants experience minimal wage growth at the bottom of the earnings distribution, which increases local levels of earnings inequality. Demand-side arguments contend that industrial restructuring reduces the pay of manual labor regardless of, and even prior to, the arrival of foreign-born workers. Adjudicating between these two perspectives is hindered by issues of potential endogeneity, which confound attempts to independently assess the effects of immigration on inequality or vice versa using OLS regression. We consider a third perspective called the reciprocal effects hypothesis which contends that immigrant concentration and earnings inequality emerge together through a mutually reinforcing feedback process. We explore this question in America's "new small-town destinations" using data from U.S. micropolitan statistical areas. We use three-stage least squares estimation to address the endogeneity problem and to test these three hypotheses. While we find support for both the supply- and demand-side perspectives, the results are best explained by the reciprocal effects hypothesis.

Unequal Trajectories: Racial and Class Differences in Residential Exposure to Industrial Hazard.

The unequal exposure to industrial hazards via differential residential attainment and/or differential sitings of toxic facilities is a long-standing environmental justice issue. This study examines individual trajectories of residential exposure to the risk of industrial hazard over nearly two decades. Using a latent class growth analysis on longitudinal geocoded data merged with the neighborhood-level pollution measures, we discover large racial differences in trajectories of pollution exposure. A majority of individuals are exposed to above-average pollution levels at some point during the study period, but blacks are more likely than whites to experience persistent exposure to high pollution. These differences are only partially explained by racial differences in suburban neighborhood attainment, socioeconomic status, and the frequency of inter-neighborhood moves. Immobile blacks also saw their exposure increase.

Cumulative structural disadvantage and racial health disparities: the pathways of childhood socioeconomic influence.

Cumulative structural disadvantage theory posits two major sources of endogenous selection in shaping racial health disparities: a race-based version of the theory anticipates a racially distinct selection process, whereas a social class-based version anticipates a racially similar process. To operationalize cumulative structural disadvantage, this study uses data from the 1979 National Longitudinal Survey of Youth in a Latent Class Analysis that demographically profiles health impairment trajectories. This analysis is used to examine the nature of selection as it relates to racial differences in the development of health impairments that are significant enough to hinder one's ability to work. The results provide no direct support for the race-based version of cumulative structural disadvantage theory. Instead, two key findings support the social class-based version of cumulative disadvantage theory. First, the functional form of the different health trajectories are invariant for whites and blacks, suggesting more racial similarly in the developmental process than anticipated by the race-based version of the theory. The extent of the racial disparity in the prevalences across the health impairment trajectories is, however, significant and noteworthy: nearly one-third of blacks (28 %) in the United States experience some form of impairment during their prime working years compared with 18.8 % of whites. Second, racial differences in childhood background mediate this racial health disparity through the indirect pathway of occupational attainment and through the direct pathway of early-life exposure to health-adverse environments. Thus, the selection of individuals into different health trajectories, based largely on childhood socioeconomic background, helps explain racial disparities in the development of health impairments.

Neighborhood Reputation and Resident Sentiment in the Wake of the Las Vegas Foreclosure Crisis.

This study examines how two major components of a neighborhood's reputation-perceived disorder and collective efficacy-shape individuals' sentiments toward their neighborhoods during the foreclosure crisis triggered by the Great Recession. Of central interest are whether neighborhood reputations are durable in the face of a crisis (neighborhood resiliency hypothesis) or whether neighborhood reputations wane during times of duress (foreclosure crisis hypothesis). Geo-coded individual-level data from the Las Vegas Metropolitan Area Social Survey merged with data on census tract foreclosure rates are used to address this question. The results provide qualified support for both perspectives. In support of the neighborhood resiliency hypothesis, collective efficacy is positively associated with how residents feel about the quality of their neighborhoods, and this relationship is unaltered by foreclosure rates. In support of the foreclosure crisis hypothesis, foreclosure rates mediate the effects of neighborhood disorder on resident sentiment. The implications of these findings for community resiliency are discussed.

Neighborhood Diversity, Metropolitan Constraints, and Household Migration.

Focusing on micro-level processes of residential segregation, this analysis combines data from the Panel Study of Income Dynamics with contextual information from three censuses and several other sources to examine patterns of residential mobility between neighborhoods populated by different combinations of racial and ethnic groups. We find that despite the emergence of multiethnic neighborhoods, stratified mobility dynamics continue to dominate, with relatively few black or white households moving into neighborhoods that could be considered multiethnic. However, we also find that the tendency for white and black households to move between neighborhoods dominated by their own group varies significantly across metropolitan areas. Black and white households' mobility into more integrated neighborhoods is shaped substantially by demographic, economic, political, and spatial features of the broader metropolitan area. Metropolitan-area racial composition, the stock of new housing, residential separation of black and white households, poverty rates, and functional specialization emerge as particularly important predictors. These macro-level effects reflect opportunities for intergroup residential contact as well as structural forces that maintain residential segregation.

Metropolitan Heterogeneity and Minority Neighborhood Attainment: Spatial Assimilation or Place Stratification?

Using geo-referenced data from the Panel Study of Income Dynamics, in conjunction with decennial census data, this research examines metropolitan-area variation in the ability of residentially mobile blacks, Hispanics, and whites to convert their income into two types of neighborhood outcomes-neighborhood racial composition and neighborhood socioeconomic status. For destination tract racial composition, we find strong and near-universal support for the "weak version" of place stratification theory; relative to whites, the effect of individual income on the percent of the destination tract population that is non-Hispanic white is stronger for blacks and Hispanics, but even the highest earning minority group members move to tracts that are "less white" than the tracts that the highest-earning whites move to. In contrast, for moves into neighborhoods characterized by higher levels of average family income, we find substantial heterogeneity across metropolitan areas in minorities' capacity to convert income into neighborhood quality. A slight majority of metropolitan areas evince support for the "strong version" of place stratification theory, in which blacks and Hispanics are less able than whites to convert income into neighborhood socioeconomic status. However, a nontrivial number of metropolitan areas also evince support for spatial assimilation theory, where the highest-earning minorities achieve neighborhood parity with the highest-earning whites. Several metropolitan-area characteristics, including residential segregation, racial and ethnic composition, immigrant population size, poverty rates, and municipal fragmentation, emerge as significant predictors of minority-white differences in neighborhood attainment.

Metropolitan structure and neighborhood attainment: exploring intermetropolitan variation in racial residential segregation.

Using data from the 1981, 1991, and 2001 waves of the Panel Study of Income Dynamics and several decennial censuses, we examine how characteristics of metropolitan areas are associated with black and white households' neighborhood racial composition. Results from hierarchical linear models show that about 20% to 40% of the variation in the percentage of households' tract population that is non-Hispanic white or non-Hispanic black exists across metropolitan areas. Over time, white households' exposure to non-Hispanic white neighbors has declined, and their exposure to non-Hispanic black neighbors has increased; the reverse trends are observed for blacks. These trends cannot be attributed to changes in the ecological structure of metropolitan areas. Blacks have fewer white neighbors in large metropolitan areas containing sizable minority populations, and blacks have more white neighbors in metropolitan areas with high government employment. Whites have more black neighbors in metropolitan areas with high levels of government employment and ample new housing; whites have fewer black neighbors in metropolitan areas with a high level of municipal fragmentation. The association between metropolitan-area percentage black and tract percentage black is weaker among whites than among blacks, suggesting that whites are especially motivated to self-segregate in metropolitan areas with large black populations.

Metropolitan influences on migration into poor and nonpoor neighborhoods.

Data from the Panel Study of Income Dynamics and three decennial U.S. censuses are used to examine the influence of metropolitan-area characteristics on black and white households' propensity to move into poor versus nonpoor neighborhoods. We find that a nontrivial portion of the variance in the odds of moving to a poor rather to a nonpoor neighborhood exists between metropolitan areas. Net of established individual-level predictors of inter-neighborhood migration, black and white households are more likely to move to a poor or extremely poor tract rather than to a nonpoor tract in metropolitan areas containing many poor neighborhoods and a paucity of recently-built housing in nonpoor areas. Blacks are especially likely to move to a poor tract in metropolitan areas characterized by high levels of racial residential segregation and in which poor tracts have a sizeable concentration of blacks. White households are more likely to move to a poor than to a nonpoor tract in metropolitan areas that have comparatively few African Americans.

When nature pushes back: environmental impact and the spatial redistribution of socially vulnerable populations.

Objectives. This research investigates the spatial redistribution of socially vulnerable subpopulations during long-term recovery from natural disaster. We hypothesize that the local environmental impact of a disaster influences this redistribution process and that how it does so varies by the urban or rural context in which the disaster occurs.Methods. To test these hypotheses, we use a novel research design that combines the natural experiment offered by Hurricane Andrew with GIS technology and local census data.Results. Findings indicate that in a more urbanized disaster zone (Miami), long-term recovery displaces socially disadvantaged residents from harder-hit areas; yet, in a more rural disaster zone (southwestern Louisiana), long-term recovery concentrates socially disadvantaged residents within these harder-hit areas.Conclusion. These findings bridge classic and contemporary research on postdisaster recovery and open new terrain for thinking about how environmental and social forces intersect to transform regions in different settlement contexts.

WHITE FLIGHT REVISITED: A MULTIETHNIC PERSPECTIVE ON NEIGHBORHOOD OUT-MIGRATION.

Using geo-linked data from the Panel Study of Income Dynamics and the decennial census, we compare probabilities of neighborhood out-migration for Anglos, blacks, Mexicans, Puerto Ricans, and Cubans by varying ethno-racial neighborhood compositions. Analyses for Latinos are disaggregated by nativity status. The results indicate that Anglos have a higher likelihood of moving when they have many minority neighbors and there is little difference whether minority neighbors are black or Latino. Among minorities there is some evidence of "minority flight" from whiter neighborhoods. Cubans, especially foreign-born Cubans, demonstrate the strongest propensity to flee neighborhoods with large black populations, whereas the probability of moving out decreases for Mexicans and Puerto Ricans when their neighbors are more likely to be black. Ethno-racial neighborhood composition has little effect on blacks' decision to leave their neighborhood.

INTER-NEIGHBORHOOD MIGRATION AND SPATIAL ASSIMILATION IN A MULTI-ETHNIC WORLD: COMPARING LATINOS, BLACKS, AND ANGLOS.

Longitudinal data from the Panel Study of Income Dynamics are used to examine patterns and determinants of migration into neighborhoods of varying racial and ethnic composition. Consistent with spatial assimilation theory, higher income and education facilitate moving into neighborhoods containing proportionally more non-Hispanic whites and, among Latinos, the native-born move to "more Anglo" neighborhoods than immigrants. Consistent with place stratification theory, blacks move to neighborhoods with significantly fewer Anglos than do comparable Latinos, and the effect of income on migration into more Anglo neighborhoods is stronger for most minority groups than for Anglos. Latinos differ only slightly from Anglos in their migration into neighborhoods with large black populations, and blacks do not differ from Anglos in the migration into neighborhoods with large Latino populations.