Conformity is a type of social influence defined as 'yielding to group pressures'.
Conformity is also defined as 'a change in a person's behaviour or opinion as a result of a real or imagined pressure from a person or group of people', where an imagined pressure is when there are no consequences for not conforming and a real pressure is when there are consequences for conforming.
Kelman proposed 3 types of conformity: Internalisation, Identification, and Compliance.
Internalisation is the strongest type of conformity, where an individual’s beliefs, values, attitudes, and behaviour align with those of the group.
Identification is a temporary/short-term change of behaviour and beliefs only in the presence of a group.
Compliance is the weakest/lowest level of conformity, where an individual follows other people’s ideas or goes along with the group to gain their approval or avoid disapproval.