Residential Clustering of Registered Sex Offenders

Project Dates: 

A Study of Sex Offender Clustering in Phoenix, Arizona

In September 2005, Phoenix City Council, through the Phoenix Police Department, contracted with ASU's Center for Violence Prevention and Community Safety to conduct a multidimensional study examining potential problems associated with the clustering of sex offenders. The study involves examining four dimensions of sex offender clustering: 1) the nature and impact in time and space of sex offender clustering; 2) the offense patterns and trajectories of sex-offenders; 3) the social and psychological impact of sex offender clustering on neighborhood-residents, and 4) the impact of sex offender clusters on constituent sex offenders.

Research Staff

Charles M. Katz, Ph.D.
Todd Armstrong
Vince Webb


Armstrong, Todd, Charles M. Katz, and Vincent J. Webb.  “Understanding the Impact of Sex Offender Registration: An Examination of Changes in Offense Type and the Predictors of Recidivism among Registered Sex Offenders.”  Justice Research & Policy 11 (1): 280-304.

Armstrong, Todd, Charles M. Katz, and Vincent J. Webb (2009). “Understanding the impact of sex offender registration.”  JRP Digest 11: 1-6.