Modeling criminal careers as departures from a unimodal population age-crime curve: The case of marijuana use

Donatello Telesca, Elena A. Erosheva, Derek A. Kreager, Ross L. Matsueda

Research output: Contribution to journalArticlepeer-review

13 Scopus citations


A major aim of longitudinal analyses of life-course data is to describe the within-and between-individual variability in a behavioral outcome, such as crime. Statistical analyses of such data typically draw on mixture and mixed-effects growth models. In this work, we present a functional analytic point of view and develop an alternative method that models individual crime trajectories as departures from a population age-crime curve. Drawing on empirical and theoretical claims in criminology, we assume a unimodal population age-crime curve and allow individual expected crime trajectories to differ by their levels of offending and patterns of temporal misalignment. We extend Bayesian hierarchical curve registration methods to accommodate count data and to incorporate influence of baseline covariates on individual behavioral trajectories. Analyzing self-reported counts of yearly marijuana use from the Denver Youth Survey, we examine the influence of race and gender categories on differences in levels and timing of marijuana smoking. We find that our approach offers a flexible model for longitudinal crime trajectories and allows for a rich array of inferences of interest to criminologists and drug abuse researchers. This article has supplementary materials online.

Original languageEnglish (US)
Pages (from-to)1427-1440
Number of pages14
JournalJournal of the American Statistical Association
Issue number500
StatePublished - 2012

All Science Journal Classification (ASJC) codes

  • Statistics and Probability
  • Statistics, Probability and Uncertainty


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