The Project on Human Development in Chicago Neighborhoods (PHDCN) is a large-scale, interdisciplinary study of how families, schools, and neighborhoods affect child and adolescent development. The crosswalk file contains census tract to neighborhood cluster level data, enabling researchers to merge and aggregate additional crime and census data with the PHDCN data. Access to these data is restricted. Users must provide justification for their request to access the crosswalk file, as well as a description of any datasets they plan to link to the PHDCN data.

The Project on Human Development in Chicago Neighborhoods (PHDCN) was a large-scale, interdisciplinary study of how families, schools, and neighborhoods affect child and adolescent development. One component of the PHDCN was the Longitudinal Cohort Study, which was a series of coordinated longitudinal studies that followed over 6,000 randomly selected children, adolescents, and young adults, and their primary caregivers over time to examine the changing circumstances of their lives, as well as the personal characteristics, that might lead them toward or away from a variety of antisocial behaviors. Numerous measures were administered to respondents to gauge various aspects of human development, including individual differences, as well as family, peer, and school influences. The data files in this study contain basic demographic information including employment, income, race/ethnicity, welfare status, and material hardship.

The Project on Human Development in Chicago Neighborhoods (PHDCN) was a large-scale, interdisciplinary study of how families, schools, and neighborhoods affect child and adolescent development. One component of the PHDCN was the Longitudinal Cohort Study, which was a series of coordinated longitudinal studies that followed over 6,000 randomly selected children, adolescents, and young adults, and their primary caregivers over time to examine the changing circumstances of their lives, as well as the personal characteristics, that might lead them toward or away from a variety of antisocial behaviors. Numerous measures were administered to respondents to gauge various aspects of human development, including individual differences, as well as family, peer, and school influences. The data files in this study contain basic demographic information including employment, income, race/ethnicity, welfare status, and material hardship.

Chart and table of population level and growth rate for the Chicago metro area from 1950 to 2025.

This dataset contains a selection of 27 indicators of public health significance by Chicago community area, with the most updated information available. The indicators are rates, percents, or other measures related to natality, mortality, infectious disease, lead poisoning, and economic status. See the full description at https://data.cityofchicago.org/api/assets/2107948F-357D-4ED7-ACC2-2E9266BBFFA2.

To assist communities in identifying racially/ethnically-concentrated areas of poverty (R/ECAPs), HUD has developed a census tract-based definition of R/ECAPs. The definition involves a racial/ethnic concentration threshold and a poverty test. The racial/ethnic concentration threshold is straightforward: R/ECAPs must have a non-white population of 50 percent or more. Regarding the poverty threshold, Wilson (1980) defines neighborhoods of extreme poverty as census tracts with 40 percent or more of individuals living at or below the poverty line. Because overall poverty levels are substantially lower in many parts of the country, HUD supplements this with an alternate criterion. Thus, a neighborhood can be a R/ECAP if it has a poverty rate that exceeds 40% or is three or more times the average tract poverty rate for the metropolitan/micropolitan area, whichever threshold is lower. Census tracts with this extreme poverty that satisfy the racial/ethnic concentration threshold are deemed R/ECAPs. This translates into the following equation: Where i represents census tracts, () is the metropolitan/micropolitan (CBSA) mean tract poverty rate, is the ith tract poverty rate, () is the non-Hispanic white population in tract i, and Pop is the population in tract i.While this definition of R/ECAP works well for tracts in CBSAs, place outside of these geographies are unlikely to have racial or ethnic concentrations as high as 50 percent. In these areas, the racial/ethnic concentration threshold is set at 20 percent. Data Source: Related AFFH-T Local Government, PHA Tables/Maps: Table 4, 7; Maps 1-17.Related AFFH-T State Tables/Maps: Table 4, 7; Maps 1-15, 18.References:Wilson, William J. (1980). The Declining Significance of Race: Blacks and Changing American Institutions. Chicago: University of Chicago Press.To learn more about R/ECAPs visit:https://www.hud.gov/program_offices/fair_housing_equal_opp/affh ; https://www.hud.gov/sites/dfiles/FHEO/documents/AFFH-T-Data-Documentation-AFFHT0006-July-2020.pdf, for questions about the spatial attribution of this dataset, please reach out to us at GISHelpdesk@hud.gov. Date of Coverage: 2017 - 2021 ACSDate Updated: 10/2023

The Project on Human Development in Chicago Neighborhoods is an interdisciplinary study aimed at deepening society's understanding of the causes and pathways of juvenile delinquency, adult crime, substance abuse, and violence. In particular, it is a study of children's social and psychological development from birth to young adulthood in urban neighborhoods. This collection contains data from a cross-sectional survey of Chicago residents in 1994 and is the first product of an eight-year project. The survey gathered information from adult residents of Chicago on their perceptions of the neighborhoods in which they live. The survey questionnaire was a multidimensional assessment of the structural conditions and organization of the neighborhoods. Data collection consisted of a household interview of residents aged 18 and older to assess key neighborhood dimensions, including the dynamic structure of the local community, organizational and political structure, cultural values, informal social control, formal social control, and social cohesion. Variables include measures of the best and worst aspects of living in Chicago, how long residents had lived in a particular neighborhood, characteristics of their neighborhood, including types of social service agencies available, and if they would consider moving to a different neighborhood and why. Other community variables measure the relationships among neighbors, including how many neighbors a respondent would recognize, how often neighbors socialized, and how often neighbors participated in other activities together. Variables that capture neighborhood social order include respondents' perceptions of neighborhood problems such as litter, graffiti, drinking, drugs, and excessive use of force by police. Respondents were also asked about their normative beliefs regarding violence, money, and various children's behaviors. Victimization variables cover how often the respondent was the victim of a fight with a weapon, a violent argument, a gang fight, sexual assault, robbery, theft, or vandalism. Other variables measure fear of crime and attitudes toward the police. Demographic variables include age, gender, education, living arrangement, national origin, and employment status. In addition, a number of scales created by the study's scientific directors are included such as social disorder, perceived neighborhood danger, and neighborhood activism. Part 1 of this study contains individual responses to survey questions. Part 2 contains data aggregated to the neighborhood cluster (NC) level (see Study Design for explanation of NC).

The Project on Human Development in Chicago Neighborhoods (PHDCN) was a large-scale, interdisciplinary study of how families, schools, and neighborhoods affect child and adolescent development. One component of the PHDCN was the Longitudinal Cohort Study, which was a series of coordinated longitudinal studies that followed over 6,000 randomly selected children, adolescents, and young adults, and their primary caregivers over time to examine the changing circumstances of their lives, as well as the personal characteristics, that might lead them toward or away from a variety of antisocial behaviors. Numerous measures were administered to respondents to gauge various aspects of human development, including individual differences, as well as family, peer, and school influences. For primary caregivers included in Wave 3 but not in Wave 2, an addendum interview was administered consisting of measures or portions of measures from the Wave 2 interview. This included questions from PROJECT ON HUMAN DEVELOPMENT IN CHICAGO NEIGHBORHOODS (PHDCN): DEMOGRAPHIC FILE, WAVE 2, 1997-2000 (ICPSR 13609), PROJECT ON HUMAN DEVELOPMENT IN CHICAGO NEIGHBORHOODS (PHDCN): MY CHILD'S EXPOSURE TO VIOLENCE, WAVE 2, 1997-2000 (ICPSR 13619), PROJECT ON HUMAN DEVELOPMENT IN CHICAGO NEIGHBORHOODS (PHDCN): FAMILY SUICIDE INTERVIEW, WAVE 2, 1997-2000 (ICPSR 13623), PROJECT ON HUMAN DEVELOPMENT IN CHICAGO NEIGHBORHOODS (PHDCN): HOUSEHOLD COMPOSITION, WAVE 2, 1997-2000 (ICPSR 13628), PROJECT ON HUMAN DEVELOPMENT IN CHICAGO NEIGHBORHOODS (PHDCN): HEALTH SCREEN, WAVE 2, 1997-2000 (ICPSR 13629), and PROJECT ON HUMAN DEVELOPMENT IN CHICAGO NEIGHBORHOODS (PHDCN): PRENATAL AND EARLY HEALTH, WAVE 2, 1997-2000 (ICPSR 13644). It was administered to primary caregivers in Cohorts 0, 3, 6, 9, and 12.

Note: This dataset is historical only and there are not corresponding datasets for more recent time periods. For that more-recent information, please visit the Chicago Health Atlas at https://chicagohealthatlas.org.

This dataset gives the average life expectancy and corresponding confidence intervals for each Chicago community area for the years 1990, 2000 and 2010. See the full description at: https://data.cityofchicago.org/api/views/qjr3-bm53/files/AAu4x8SCRz_bnQb8SVUyAXdd913TMObSYj6V40cR6p8?download=true&filename=P:\EPI\OEPHI\MATERIALS\REFERENCES\Life Expectancy\Dataset description - LE by community area.pdf

This project's main goal was to develop an analytical framework that could be used for analysis of rare crimes observed at local (intra-city) levels of geographic aggregation. To demonstrate the application of this framework to a real-world issue, this project analyzed the occurrence of different types of homicide at both the census tract and neighborhood cluster level in Chicago. Homicide counts for Chicago's 865 census tracts for 1989-1991 were obtained from HOMICIDES IN CHICAGO, 1965-1995 (ICPSR 6399), Part 1: Victim Level Data. The types of homicide examined were gang-related, instrumental, family-related expressive, known person expressive, stranger expressive, and other. Demographic and socioeconomic data at the census tract level for the year 1990 were obtained from the Neighborhood Change Database (NCDB) at the Urban Institute. Part 1 contains these data, as initially obtained, at the census tract level. Part 2 contains an aggregated version of the same data for Chicago's 343 neighborhood clusters as defined by the Project on Human Development in Chicago's Neighborhoods.

The purpose of the study was to examine homicide trends in Chicago neighborhoods from 1980-2000 using HOMICIDES IN CHICAGO, 1965-1995 (ICPSR 6399), 1980-2000 Census data, and PROJECT ON HUMAN DEVELOPMENT IN CHICAGO NEIGHBORHOODS: COMMUNITY SURVEY, 1994-1995 (ICPSR 2766). Drawing on the social disorganization and concentrated disadvantage literature, this study used growth-curve modeling and semi-parametric group-based trajectory modeling to: (1) assess neighborhood variation in homicide trends; (2) identify the particular types of homicide trajectory that Chicago neighborhoods follow; (3) assess whether structural characteristics of neighborhoods influence homicide trends and trajectories; and (4) determine the extent to which the influence of structural characteristics is mediated by neighborhood levels of collective efficacy. This project extended prior research by not only describing the homicide trends and trajectories of Chicago neighborhoods, but also identifying the neighborhood characteristics that directly and indirectly influence those trends.

Abstract (en): The Project on Human Development in Chicago Neighborhoods (PHDCN) was a large-scale, interdisciplinary study of how families, schools, and neighborhoods affect child and adolescent development. One component of the PHDCN was the Longitudinal Cohort Study, which was a series of coordinated longitudinal studies that followed over 6,000 randomly selected children, adolescents, and young adults, and their primary caregivers over time to examine the changing circumstances of their lives, as well as the personal characteristics, that might lead them toward or away from a variety of antisocial behaviors. Numerous measures were administered to respondents to gauge various aspects of human development, including individual differences, as well as family, peer, and school influences. One such measure was the Alcohol Use survey. It was adapted from the short form of the Composite International Diagnostic Interview (UM-CIDI Short Form), and it obtained information about the use of alcohol by the subjects' primary caregivers (PCs). It was administered to PCs in Cohorts 0, 3, 6, 9, 12, and 15. Project on Human Development in Chicago Neighborhoods The Project on Human Development in Chicago Neighborhoods (PHDCN) was a large-scale, interdisciplinary study of how families, schools, and neighborhoods affect child and adolescent development. It was designed to advance the understanding of the developmental pathways of both positive and negative human social behaviors. In particular, the project examined the causes and pathways of juvenile delinquency, adult crime, substance abuse, and violence. At the same time, the project provided a detailed look at the environments in which these social behaviors took place by collecting substantial amounts of data about urban Chicago, including its people, institutions, and resources. Longitudinal Cohort Study One component of the PHDCN was the Longitudinal Cohort Study, which was a series of coordinated longitudinal studies that followed over 6,000 randomly selected children, adolescents, and young adults, and their primary caregivers over time to examine the changing circumstances of their lives, as well as the personal characteristics, that might lead them toward or away from a variety of antisocial behaviors. The age cohorts include birth (0), 3, 6, 9, 12, 15, and 18 years. Numerous measures were administered to respondents to gauge various aspects of human development, including individual differences, as well as family, peer, and school influences. Alcohol Use The data in this collection are from Wave 3 of the Longitudinal Cohort Study, which was administered between 2000 and 2002. The data files contain information from the Alcohol Use protocol. The Alcohol Use instrument collected information regarding the use of alcohol by the subjects' primary caregivers. Project on Human Development in Chicago Neighborhoods The city of Chicago was selected as the research site for the PHDCN because of its extensive racial, ethnic, and social-class diversity. The project collapsed 847 census tracts in the city of Chicago into 343 neighborhood clusters (NCs) based upon seven groupings of racial/ethnic composition and three levels of socioeconomic status. The NCs were designed to be ecologically meaningful. They were composed of geographically contiguous census tracts, and geographic boundaries, and knowledge of Chicago's neighborhoods were considered in the definition of the NCs. Each NC was comprised of approximately 8,000 people. Longitudinal Cohort Study For the Longitudinal Cohort Study, a stratified probability sample of 80 neighborhoods was selected. The 80 NCs were sampled from the 21 strata (seven racial/ethnic groups by three socioeconomic levels) with the goal of representing the 21 cells as equally as possible to eliminate the confounding between racial/ethnic mix and socioeconomic status. Once the 80 NCs were chosen, then block groups were selected at random within each of the sample neighborhoods. A complete listing of dwelling units was collected for all sampled block groups. Pregnant women, children, and young adults in seven age cohorts (birth, 3, 6, 9, 12, 15, and 18 years) were identified through in-person screening of approximately 40,000 dwelling units within the 80 NCs. The screening response rate was 80 percent. Children within six months of the birthday that qualified them for the sample were selected for inclusion in the Longitudinal Cohort Study. A total of 8,347 par...

This dataset contains a selection of six socioeconomic indicators of public health significance and a “hardship index,” by Chicago community area, for the years 2007 – 2011. The indicators are the percent of occupied housing units with more than one person per room (i.e., crowded housing); the percent of households living below the federal poverty level; the percent of persons in the labor force over the age of 16 years that are unemployed; the percent of persons over the age of 25 years without a high school diploma; the percent of the population under 18 or over 64 years of age (i.e., dependency); and per capita income. Indicators for Chicago as a whole are provided in the final row of the table. See the full dataset description for more information at https://data.cityofchicago.org/api/assets/8D10B9D1-CCA3-4E7E-92C7-5125E9AB46E9.

Abstract (en): The Project on Human Development in Chicago Neighborhoods (PHDCN) was a large-scale, interdisciplinary study of how families, schools, and neighborhoods affect child and adolescent development. One component of the PHDCN was the Longitudinal Cohort Study, which was a series of coordinated longitudinal studies that followed over 6,000 randomly selected children, adolescents, and young adults, and their primary caregivers over time to examine the changing circumstances of their lives, as well as the personal characteristics, that might lead them toward or away from a variety of antisocial behaviors. Numerous measures were administered to respondents to gauge various aspects of human development, including individual differences, as well as family, peer, and school influences. The Substance Use interview was a self-report measure administered to Cohorts 6, 9, 12, 15, and 18 to obtain information regarding the subject's use of specific drugs. Project on Human Development in Chicago Neighborhoods The Project on Human Development in Chicago Neighborhoods (PHDCN) was a large-scale, interdisciplinary study of how families, schools, and neighborhoods affect child and adolescent development. It was designed to advance the understanding of the developmental pathways of both positive and negative human social behaviors. In particular, the project examined the causes and pathways of juvenile delinquency, adult crime, substance abuse, and violence. At the same time, the project provided a detailed look at the environments in which these social behaviors took place by collecting substantial amounts of data about urban Chicago, including its people, institutions, and resources. Longitudinal Cohort Study One component of the PHDCN was the Longitudinal Cohort Study, which was a series of coordinated longitudinal studies that followed over 6,000 randomly selected children, adolescents, and young adults, and their primary caregivers over time to examine the changing circumstances of their lives, as well as the personal characteristics, that might lead them toward or away from a variety of antisocial behaviors. The age cohorts include birth (0), 3, 6, 9, 12, 15, and 18 years. Numerous measures were administered to respondents to gauge various aspects of human development, including individual differences, as well as family, peer, and school influences. Substance Use The data in this collection are from Wave 3 of the Longitudinal Cohort Study, which was administered between 2000 and 2002. The data files contain information from the Substance Use protocol. The Substance Use instrument was a self-report measure administered to Cohorts 6, 9, 12, 15, and 18 to obtain information regarding the subject's use of specific drugs. Project on Human Development in Chicago Neighborhoods The city of Chicago was selected as the research site for the PHDCN because of its extensive racial, ethnic, and social-class diversity. The project collapsed 847 census tracts in the city of Chicago into 343 neighborhood clusters (NCs) based upon seven groupings of racial/ethnic composition and three levels of socioeconomic status. The NCs were designed to be ecologically meaningful. They were composed of geographically contiguous census tracts, and geographic boundaries, and knowledge of Chicago's neighborhoods were considered in the definition of the NCs. Each NC was comprised of approximately 8,000 people. Longitudinal Cohort Study For the Longitudinal Cohort Study, a stratified probability sample of 80 neighborhoods was selected. The 80 NCs were sampled from the 21 strata (seven racial/ethnic groups by three socioeconomic levels) with the goal of representing the 21 cells as equally as possible to eliminate the confounding between racial/ethnic mix and socioeconomic status. Once the 80 NCs were chosen, then block groups were selected at random within each of the sample neighborhoods. A complete listing of dwelling units was collected for all sampled block groups. Pregnant women, children, and young adults in seven age cohorts (birth, 3, 6, 9, 12, 15, and 18 years) were identified through in-person screening of approximately 40,000 dwelling units within the 80 NCs. The screening response rate was 80 percent. Children within six months of the birthday that qualified them for the sample were selected for inclusion in the Longitudinal Cohort Study. A total of 8,347 participants were identified through the screening. Of the eligible study participants, 6...

The purpose of the Project on Human Development in Chicago Neighborhoods (PHDCN) was to examine how families, schools, and neighborhoods affect child and adolescent development. This included understanding the causes and the pathways of juvenile delinquency, adult crime, substance abuse, and violence. The Project had a focus on studying problematic behavior as well as an interest in social competence. The long-term objectives were to create knowledge that would inform violence prevention strategies and help develop better approaches to the promotion of social competence in children from infancy to young adulthood. The Project combined two studies into one comprehensive design. The first study was an intensive study of Chicago's neighborhoods including their social, economic, organizational, political, and cultural structures, and the changes that take place within these structures. This was achieved through data collection efforts at the community level, including a community survey of Chicago residents, interviews with neighborhood experts, systematic social observations involving block by block videotaping, and analyses of school, police, court and other agency records. The second study was a longitudinal cohort study involving seven randomly selected cohorts of children, adolescents, and young adults, looking at the changing circumstances of their lives and the personal characteristics that may lead them towards or away from a variety of antisocial behaviors. PHDCN is organized as five components: 1) Longitudinal study with an embedded intensive study of infants (Infant Assessment Unit); 2) Community survey; 3) Observational study of neighborhoods; 4) Neighborhood expert survey; and 5) Administrative data. Neighborhoods were operationally defined as 343 clusters of city blocks from Chicago's 847 populated census tracts. The Longitudinal Cohort Study consists of three waves of data collected over a period of seven years from a sample of children and youth and their primary caregivers. The study involves seven randomly selected cohorts of children, adolescents, and young adults, looking at the changing circumstances of their lives and the personal characteristics that may lead them towards or away from a variety of antisocial behaviors. The age cohorts include birth, 3, 6, 9, 12, 15, and 18 years. Participants were drawn from 80 neighborhood clusters and were selected through in-person screening of 40,000 dwelling units within the identified communities. A total of 8,347 participants were identified. In the first wave of data collection, 75% of the identified participants were interviewed. Questions assessed impulse control and sensation-seeking traits, cognitive and language development, leisure activities, delinquency and substance abuse, friends' activities, and self-perception, attitudes, and values. Caregivers were also interviewed and questions focused on family structure, parent characteristics, parent-child relationships, parent discipline styles, family mental health, and family history of criminal behavior and drug use. Interviews were given in Spanish, English and Polish. Wave 1 also included the Infant Assessment Unit where 412 participants from the longitudinal birth cohort were assessed on each infant's growth and health, cognitive capabilities, and motor skills. Videotaped interactions between these infants and their caregivers are also available. A second wave of data collection with the longitudinal sample was conducted between 1997-1999 with a response rate of 85.94%, and a third wave in 2000-2001 with a response rate of 78.19%.

The Project on Human Development in Chicago Neighborhoods (PHDCN) was a large-scale, interdisciplinary study of how families, schools, and neighborhoods affect child and adolescent development. One component of the PHDCN was the Longitudinal Cohort Study, which was a series of coordinated longitudinal studies that followed over 6,000 randomly selected children, adolescents, and young adults, and their primary caregivers over time to examine the changing circumstances of their lives, as well as the personal characteristics, that might lead them toward or away from a variety of antisocial behaviors. Numerous measures were administered to respondents to gauge various aspects of human development, including individual differences, as well as family, peer, and school influences. One such measure was the Personal Identity instrument. It was administered to subjects in Cohorts 6, 9, 12, 15, and 18 and obtained information related to racial and ethnic identity, which was originally collected in PROJECT ON HUMAN DEVELOPMENT IN CHICAGO NEIGHBORHOODS (PHDCN): DEMOGRAPHIC FILE, WAVE 1, 1994-1997 (ICPSR 13581), and PROJECT ON HUMAN DEVELOPMENT IN CHICAGO NEIGHBORHOODS (PHDCN): DEMOGRAPHIC FILE, WAVE 2, 1997-2000 (ICPSR 13609). It also contained future orientation and discrimination questions, as well as questions relating to group importance that were drawn from the Puerto Rican Adolescent Survey.

This Data is for manuscript "Educating Locally or Everywhere? A Spatial Analysis of Neighborhood Accessibility in Chicago’s Charter Schools for Students of Color ". It has three parts: (1) “Neighborhood Data” contains constructed neighborhood data based on road distance after GIS application, and raw neighborhood data based on census tract before GIS.(2) “School Data” contains school related dependent variables and covariates.(3) “ArcGIS” contains the specific GIS process for constructing neighborhoods along with variable production in mpk format.

Abstract (en): The Project on Human Development in Chicago Neighborhoods (PHDCN) was a large-scale, interdisciplinary study of how families, schools, and neighborhoods affect child and adolescent development. One component of the PHDCN was the Longitudinal Cohort Study, which was a series of coordinated longitudinal studies that followed over 6,000 randomly selected children, adolescents, and young adults, and their primary caregivers over time to examine the changing circumstances of their lives, as well as the personal characteristics, that might lead them toward or away from a variety of antisocial behaviors. Numerous measures were administered to respondents to gauge various aspects of human development, including individual differences, as well as family, peer, and school influences. One such measure was the Where Are You Afraid? questionnaire that included questions regarding the subject's fear in certain situations. It was administered to Cohorts 9, 12, and 15. Project on Human Development in Chicago Neighborhoods The Project on Human Development in Chicago Neighborhoods (PHDCN) was a large-scale, interdisciplinary study of how families, schools, and neighborhoods affect child and adolescent development. It was designed to advance the understanding of the developmental pathways of both positive and negative human social behaviors. In particular, the project examined the causes and pathways of juvenile delinquency, adult crime, substance abuse, and violence. At the same time, the project provided a detailed look at the environments in which these social behaviors took place by collecting substantial amounts of data about urban Chicago, including its people, institutions, and resources. Longitudinal Cohort Study One component of the PHDCN was the Longitudinal Cohort Study, which was a series of coordinated longitudinal studies that followed over 6,000 randomly selected children, adolescents, and young adults, and their primary caregivers over time to examine the changing circumstances of their lives, as well as the personal characteristics, that might lead them toward or away from a variety of antisocial behaviors. The age cohorts include birth (0), 3, 6, 9, 12, 15, and 18 years. Numerous measures were administered to respondents to gauge various aspects of human development, including individual differences, as well as family, peer, and school influences. Where Are You Afraid? The data in this collection are from Wave 2 of the Longitudinal Cohort Study, administered between 1997 and 2000. The data files contain information from the Where Are You Afraid? protocol. The Where Are You Afraid? questionnaire included questions regarding the subject's fear in certain situations. It was administered to Cohorts 9, 12, and 15. Project on Human Development in Chicago Neighborhoods The city of Chicago was selected as the research site for the PHDCN because of its extensive racial, ethnic, and social-class diversity. The project collapsed 847 census tracts in the city of Chicago into 343 neighborhood clusters (NCs) based upon seven groupings of racial/ethnic composition and three levels of socioeconomic status. The NCs were designed to be ecologically meaningful. They were composed of geographically contiguous census tracts, and geographic boundaries, and knowledge of Chicago's neighborhoods were considered in the definition of the NCs. Each NC was comprised of approximately 8,000 people. Longitudinal Cohort Study For the Longitudinal Cohort Study, a stratified probability sample of 80 neighborhoods was selected. The 80 NCs were sampled from the 21 strata (seven racial/ethnic groups by three socioeconomic levels) with the goal of representing the 21 cells as equally as possible to eliminate the confounding between racial/ethnic mix and socioeconomic status. Once the 80 NCs were chosen, then block groups were selected at random within each of the sample neighborhoods. A complete listing of dwelling units was collected for all sampled block groups. Pregnant women, children, and young adults in seven age cohorts (birth, 3, 6, 9, 12, 15, and 18 years) were identified through in-person screening of approximately 40,000 dwelling units within the 80 NCs. The screening response rate was 80 percent. Children within six months of the birthday that qualified them for the sample were selected for inclusion in the Longitudinal Cohort Study. A total of 8,347 participants were identified through the screening. Of the eligible study partic...

Modeled on the Community Survey of the Project on Human Development in Chicago Neighborhoods, the project collected survey data from random samples of individuals from a random sample of "neighborhood clusters" in El Paso County, Texas. Neighborhood clusters consist of geographically contiguous and socially similar census tracts and for El Paso were determined by a combination of the local knowledge possessed by the project's researchers, preliminary analyses of the most recent census data regarding the distributions of immigrant status, language use, year of entry, and aspects of economic disadvantage as well as obvious boundaries (such as Interstates, major roads, mountains, and military installations). The project used a sampling frame of neighborhood clusters in El Paso County stratified by measures of immigrant concentration (e.g., generational status, length of time since immigration) and socio-economic status. The project then employed Cole Lists, a company that provides consumer information for direct marketers, to obtain a list of all residential addresses in El Paso County by census tract. From each sampled neighborhood cluster, 30 residences were selected using a systematic random sampling procedure (a random start determined from a table of random numbers and then selecting every kth address. Each selected residence was mailed a notification letter, printed in English and in Spanish, regarding participation in the project and which specified that a trained interviewer will personally visit to determine which adult resident(s), if any, are willing to participate. For residences that agreed to participate, the adult resident who had the most recent birthday was selected for actual participation. These respondents received an incentive of $20. In face-to-face interviews, trained interviewers recorded each respondent's answers on a paper form and later manually entered this information into a computer file using spreadsheet software.

The Project on Human Development in Chicago Neighborhoods (PHDCN) was a large-scale, interdisciplinary study of how families, schools, and neighborhoods affect child and adolescent development. One component of the PHDCN was the Longitudinal Cohort Study, which was a series of coordinated longitudinal studies that followed over 6,000 randomly selected children, adolescents, and young adults, and their primary caregivers over time to examine the changing circumstances of their lives, as well as the personal characteristics, that might lead them toward or away from a variety of antisocial behaviors. Numerous measures were administered to respondents to gauge various aspects of human development, including individual differences, as well as family, peer, and school influences. One such measure was the Interviewer Impressions (Subject). This set of questions was completed by the interviewer at the end of each interview with a subject (SP). The interviewer gave their impressions regarding the subject and the interview itself. Basic demographic information was also collected. It was completed for Cohorts 3, 6, 9, 12, and 15.