Cohen focuses on delinquent boys in gangs and he ignores girls
This means his study is not representative and can only be generalisable to working class boys
Cannot explain all crime like white collar crime
Cohen’s work shows a middle class bias.
He assumes that working class delinquents start out by accepting middle class values and aspirations such as educational success
Instead they don't accept society's goals and perform delinquent behaviours out of resentment against those whos values they dont share