Social influence is the process by which individual's attitudes, behaviors and beliefs are shaped by the real or implied presence of others.
Social change refers to the transformation over time of society's attitudes behaviors and norms.
The first stage of social change is drawing attention as social change typically starts with some form of social protest that draws attention to an issue.
The second stage of social change is creating understanding as the issue must be understood, typically through research and sharing of information.
The final stage of social change is social validation as when more people join the cause, it gains credibility and further supports social change.
The snowball effect is where as more people accept the change, it gathers momentum until it reaches the tipping point where the majority accept the change.
Social crypoamnesia is when people forget the origin of social changes, including the minority groups which initiated the changes.