Peter Conlong Justice Analytical Services Scottish Government If crime is falling, why is the Scottish prison population still so high? Peter Conlong Justice Analytical Services Scottish Government
Long term trends in crime and the prison population Crime starts to drop after 1991 …but prison population growth accelerates
Breakdown of crimes and offences
Trends in non-sexual crimes of violence
Trends in male prison population
Population by crime type: men
Total population
Housebreaking/ shoplifting By crime type Serious violent crime Drugs & weapons & CAPJ Housebreaking/ shoplifting Common assault Sexual crimes
Influence of crime trends
Influence of clear-up rates
Impact of court conviction rate
…add in % custodial sentences
Changes in sentence length
…if crime hadn’t changed:
…if crime hadn’t changed:
Trends in female prison population
Population by crime type
Total population
By crime type Drugs & CAPJ Serious violent crime Shoplifting Common assault
Influence of crime trends
Influence of clear-up rates
Impact of court conviction rate
…add in % custodial sentences
Changes in sentence length
…if crime hadn’t changed:
…if crime hadn’t changed:
Life sentences – average time served
Estimated number of prison places associated with convictions for domestic abuse
Conclusions Rise in prison population largely due to: Improvements in clear-up rates and conviction rates Convictions for previously ‘hidden’ crime types such as domestic abuse and sexual offences Upward drift in average sentence lengths (esp. housebreaking, handling an offensive weapon, domestic abuse, and murder) Post 2011-12: crime drop outweighed system-driven effects
Reality check…
Reality check…