When you are looking at the ecological theory you are looking at the systems that an individual works and operates in within society. There is the micro, mezzo, and macro systems within the ecological theory. The macro system is the largest of these systems and is also the most expansive for the individual in which the system effects. The macro system is comprised of laws, cultural guidelines, and customs within the society that the indivudal lives that will dictate the individuals behavior and what is expected from them. The macro system will help shape the individuals behaviors by dictating what is legally expected of them as well as what is culturally expected for them do and how they will act.