I am a senior researcher at the Netherlands Institute for the Study of Crime and Law Enforcement, a research institute of the Netherlands Organisation for Scientific Research.

Most of my work is on the ‘geography of crime’. I describe spatial and temporal variations in crime, and explain these variations as a function of the characteristics of places and of how potential offenders, potential victims, informal and formal guardians use their spatial environment over daily and weekly time cycles.

I’m always up for collaboration. Send me an email if you’re interested!

Are you interested in situational and spatial criminology? Consider joining the ‘Space, Place, and Crime’ working group of the European Society of Criminology.


  • Criminology
  • Spatio-temporal patterns
  • Machine Learning
  • Quantitative research methods
  • R


  • PhD in Sociology, 2011

    Department of Sociology/Interuniversity Centre for Social Science Theory and Methodology (ICS), Utrecht University

  • MSc in Business Informatics, 2004

    Utrecht University

  • Propedeuse in Information Science, 2001

    Utrecht University


When I think it may be helpful to others, I publish my code as a software package. I have published the following R packages:


Uses the (Monte Carlo permutation based) Knox test for space-time clustering to quantify the spatio-temporal association between events.

sppt: Spatial Point Pattern Test

Implements several area-based tests that measure the degree of similarity at the local level between two spatial point patterns.


Calculates the standard Gini coefficient as well as the generalized coefficient, and plots Lorenz curves. The Lorenz plots show the line of maximal equality given the data.

Recent Publications

(auto-generated, please forgive errors)

(2021). Non-spatial and spatial linear regression. The Study of Crime and Place: A Methods Handbook.

(2021). Right place, right time? Making crime pattern theory time-specific. Crime Science.


(2021). Using Agent-Based Models to Investigate the Presence of Edge Effects around Crime Generators and Attractors. Agent based modelling for criminological theory testing and development.

(2021). A Simulation Study into the Generation of Near Repeat Victimizations. Agent based modelling for criminological theory testing and development.

(2020). When Do Offenders Commit Crime? An Analysis of Temporal Consistency in Individual Offending Patterns. Journal of Quantitative Criminology.