Social psychologists study how thoughts, feelings and behaviours are influenced by others. They focus on the influence of this social environment on individual behaviour and group behaviour. Social psychologists focus on themes such as stereotypes and prejudice, cooperation and conflicts, decision making, power and leadership, and influencing behavior. The knowledge acquired by social psychologists is relevant to various social disciplines. Examples of these are sustainable and environmentally friendly behaviour, diversity and inclusiveness, consumer behaviour, and dealing with conflicts.