Do burglar alarms increase burglary risk? A counter-intuitive finding and possible explanations

Burglar alarms are widely used as a means to try to reduce the risk of domestic burglary. Previous research has suggested that some burglars are deterred by alarms and that they are therefore effective. Using multiple sweeps of the Crime Survey for England and Wales, the research reported here sought to corroborate these findings. It finds that alarms have become associated with increased rather than decreased risk of burglary with entry. This counter-intuitive finding needs to be treated cautiously. A series of hypotheses that might explain it are outlined.