There are 4 key systems influencing human development:

• microsystem- individual, parents, teachers, peers
• mesosystem- relationships between multiple microsystems (e.g. parent-teacher differing expectations)
• exosystem- systems that affect but do not contain an individual (e.g. SES, parental employment and networks, public policy and education, the media)
• macrosystem- overarching sociocultural values and beliefs