Normitive Social Influence refers to instances where someone conforms in order to fit in and gail approval or avoid dissaproval from its group members. It is about norms and what is typical for a particular group. This explanation tends to lead to complience and it is an emotional process.
Normative Social influence is more likley to occur in situations with strangers where you feel concerned about rejection. People who you know, as we want social approval from our friend.
Informational Social influence refers to instances where people conform because they are uncertain about what to do in a particular situation, so they look to others for guidence. It is a cognitive proccess.
