Are the current policies and social control institutions (formal and informal) effective in controlling/reducing criminal behavior?

Provide a brief discussion on the effectiveness of current policies and methods to deter crime. Are the current policies and social control institutions (formal and informal) effective in controlling/reducing criminal behavior? For example, is incapacitation (high rate and duration of incarceration) more effective than rehabilitation? Briefly discuss the changes in criminal justice (changes in policy, police, and courts) you think are required to deter crime.