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Project on Human Development in Chicago Neighborhoods (PHDCN): Life History Calendar, Wave 2, 1997-2000 (ICPSR 13635)

Released/updated on: 2006-05-12

Geographic coverage: United States, Chicago, Illinois

Time period: 1997-01-01--2000-01-01

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 instrument was the Life History Calendar. This was a structured interview utilizing a grid-like format to facilitate rapid and accurate recall of life events experienced by young adults. It was administered to Cohort 18.

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Research and Evaluation on Domestic Radicalization to Violent Extremism: Research to Support Exit USA, United States, 2015-2019 (ICPSR 37684)

Released/updated on: 2025-09-25

Geographic coverage: Canada, United States

Time period: 2015-01-01--2019-01-01

The spread of and involvement in domestic extremist organizations are some of the most pressing issues facing the criminal justice field. There is little research studying the trajectories of former members of extremist organizations. This project begins to address the gaps in knowledge about radicalization and exit by gathering firsthand accounts from former members of white supremacist organizations in the U.S.

The goal of this project was to understand the pathways to disengagement and deradicalization among former white supremacists to provide justice and community organizations with useful information to support prevention and intervention strategies. There is a dearth of systematic information about the motivations, trajectories, and barriers involved with the disengagement and deradicalization process. This project was designed to provide a necessary and foundational assessment of the processes involved with becoming a former extremist. This project charted the social and psychological processes involved in exiting domestic extremist organizations by analyzing the detailed life history accounts of 47 former domestic extremists.