On the future of the individual longitudinal age-crime curve.

Background: This article serves as our memorial for the outstanding contribution of Rolf Loeber to developmental criminology. His salient paper on the future of the study of the age-crime curve (2012) is the focal point.

Aims: Follow some research trails that Rolf Loeber proposed in his 2012 paper.

Can we make accurate long-term predictions about patterns of de-escalation in offending behavior?

This study consists of a comparative analysis of patterns of de-escalation between ages 17-18 and 32, based on data from two well-known prospective longitudinal studies, the Cambridge Study in Delinquent Development (a study of 411 working-class males in London) and the Montreal Two Samples Longitudinal Study (a sample of 470 adjudicated French-Canadian males). Analyses focus on within-individual change, with individuals serving as their own controls. In this regard, the magnitude of measured change is relative to the past degree of involvement in offending.

Quantifying effects of soil heterogeneity on groundwater pollution at four sites in USA.

Four sites located in the north-eastern region of the United States of America have been chosen to investigate the impacts of soil heterogeneity in the transport of solutes (bromide and chloride) through the vadose zone (the zone in the soil that lies below the root zone and above the permanent saturated groundwater). A recently proposed mathematical model based on the cumulative beta distribution has been deployed to compare and contrast the regions' heterogeneity from multiple sample percolation experiments. Significant differences in patterns of solute leaching were observed even over a small spatial scale, indicating that traditional sampling methods for solute transport, for example the gravity pan or suction lysimeters, or more recent inventions such as the multiple sample percolation systems may not be effective in estimating solute fluxes in soils when a significant degree of soil heterogeneity is present.

Searching for a developmental typology of personality and its relations to antisocial behavior: a longitudinal study of a representative sample of men.

The search for an empirically based personality typology has regained the interest of researchers. To date, however, the empirical inquiries were mainly cross-sectional. In this study, an empirically based developmental typology of personality was identified using data from a prospective longitudinal study of a representative sample of men assessed on four occasions from adolescence to midlife.

Searching for a developmental typology of personality and its relations to antisocial behaviour: a longitudinal study of an adjudicated men sample.

The search for an empirically based personality typology has regained the interest of researchers. To date, however, empirical inquiries have mainly been cross-sectional. In this study, an empirically based developmental typology of personality was identified using data from a prospective longitudinal study of a sample of men adjudicated during their adolescence and assessed on four occasions until midlife.

A developmental test of the general deviance syndrome with adjudicated girls and boys using hierarchical confirmatory factor analysis.

Background: Over the last 40 years, numerous studies have proposed that various deviant behaviours are part of a latent construct now labelled 'general deviance' by criminologists or 'problem behaviour' by psychologists. During that period, many studies have documented the presence of specific forms of deviance. However, no study has tested these two opposing views simultaneously, particularly with longitudinal data.

Continuity and change in personality traits from adolescence to midlife: a 25-year longitudinal study comparing representative and adjudicated men.

In the first study, a hierarchical structure of personality traits was identified using data from a longitudinal study tracing two samples of men from adolescence to midlife (i.e., a representative sample of the general population and a sample of individuals adjudicated during their adolescence).