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| Life-Course Criminology Analysis× | Group-Based Trajectory Model× | |
|---|---|---|
| Field | Criminology | Criminology |
| Family≠ | Process / pipeline | Regression model |
| Year of origin | 1993 | 1993 |
| Originator≠ | Robert J. Sampson & John H. Laub | Daniel S. Nagin & Kenneth C. Land |
| Type≠ | Theoretical framework and longitudinal analytic strategy for offending over the life course | Finite-mixture model of longitudinal developmental trajectories |
| Seminal source≠ | Sampson, R. J., & Laub, J. H. (1993). Crime in the Making: Pathways and Turning Points Through Life. Harvard University Press. ISBN: 9780674176058 | Nagin, D. S., & Land, K. C. (1993). Age, criminal careers, and population heterogeneity: Specification and estimation of a nonparametric, mixed Poisson model. Criminology, 31(3), 327–362. DOI ↗ |
| Aliases≠ | Age-Graded Theory of Informal Social Control, Sampson-Laub Life-Course Theory, Developmental Life-Course Criminology, Life-Course Theory of Crime | GBTM, Group-Based Modeling of Development, Nagin Trajectory Model, Semiparametric Group-Based Modeling |
| Related≠ | 5 | 4 |
| Summary≠ | Life-course criminology analyzes both continuity and change in offending across the entire life span, anchored in Sampson and Laub's age-graded theory of informal social control. The core claim is that social bonds that emerge at different ages — strong marriages, stable employment, military service — function as informal social control that can redirect criminal trajectories, so that change is possible at any age and is not fully determined by childhood propensity. | Group-based trajectory modeling (GBTM) is a finite-mixture method that identifies clusters of individuals who follow similar developmental paths of a behavior — most famously offending — over age or time. Introduced to criminology by Daniel Nagin and Kenneth Land in 1993, it replaces the assumption of a single average trajectory with a small number of distinct latent groups, each described by its own polynomial curve and its share of the population. |
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