This is a compulsory theory so everyone learns it and the Examiner will expect you to know it in detail. While the Exam could ask general questions about the theory's ideas or evaluation, it could also ask specific questions, like, How does Social Impact explain genocide? or, What explanations does Social Impact Theory give of rioting? or, How can Social Impact Theory be used to make students obey their teachers? Make sure you can explain the STRENGTHS of this theory as well as the weaknesses.
Divisions of Impact
RESEARCH INTO SOCIAL IMPACT THEORY
APPLYING SOCIAL IMPACT THEORY (AO2)
EVALUATING SOCIAL IMPACT THEORY (AO3)