How Crime is Measured
You'll need to know three main ways we measure crime, each with serious limitations that create the 'dark figure of crime' - all the unreported and unrecorded criminal activity.
Official statistics come from police records and public reports. They're government-produced and show large-scale patterns, but miss loads of crime due to under-reporting (embarrassment, fear, not trusting police) and under-recording (police don't think it's serious enough).
Victim surveys like the Crime Survey for England and Wales ask 35,000 people annually what crimes they've experienced. These reveal hidden crimes and help create policies, but exclude 'victimless' crimes and rely on potentially faulty memories.
Self-report studies anonymously ask people (mainly young people) about crimes they've committed. They're brilliant for uncovering unreported anti-social behaviour, but participants might exaggerate or lie.
Different theories interpret this data differently. Functionalists accept statistics as accurate, Marxists argue they under-represent powerful people's crimes, feminists say they ignore crimes against women, and interactionists claim statistics just reflect police stereotypes about who looks 'criminal'.
Exam Hack: Always discuss advantages AND disadvantages of each measurement method - examiners love students who show critical thinking about data reliability.