Social psychology stands in the field where the individual and the social environment meet. The focus of scientific study is, on the one side, on processes like perception, the mind, cognition, emotion, motivation, decision-making, and behavior. On the other side, social psychology also looks at social processes and interactions at various levels of social systems: micro-systems (like groups, partnerships, families), meso-systems (such as organizations and institutions), and macro-systems (such as societies and nations).
In addition to psychological and social factors, further aspects of the context must always be considered, such as physical, biological, socio-cultural, legal, and economic factors. Here, environment – understood in this comprehensive sense – is object, medium, framing condition, and product of human behavior.