Sutherland's nine key principles
-criminal behaviour is learned rather than inherited
-learned through associations with others
-association is with intimate personal groups
-what is learned are techniques and attitudes/motivation
-learning is directional - either for or against crime
-if number of favourable attitudes outweigh unfavourable, a person becomes an offender
-learning experiences (differential association) vary in frequency and intensity of individual
-criminal behaviour is learned through same processes as any other behaviour
- general 'need' (e.g. for money) is not sufficient explanation for crime, not everyone with those needs turn to crime.