This paper shows that increasing the sanction on collective crime may increase its prevalence. This situation arises when individuals can commit crimes both individually and as part of a collective. Our result is based on an interdependence between detection probabilities where detection of an...

Six Poisson autoregressive models of order p [PAR(p)] of daily wildland arson ignition counts are estimated for five locations in Florida (1994-2001). In addition, a fixed effects time-series Poisson model of annual arson counts is estimated for all Florida counties (1995-2001). PAR(p) model...