Interactionalism explores interaction between person who commits act and those who react to it
Becker argues that deviance is created by society, social groups create deviance by making rules, applying them to particular people and labelling them as outsiders
Whether act is considered deviant depends on how others react to it, this varies by when and where act takes place, who commits act and how is harmed by it
Some groups have power to make rules and apply them to others, power related to age, ethnicity, gender, class eg adult make rules for child