Systems thinking: Bioecological Systems Theory

I have been doing quite a bit of thinking about systems theory lately. Not only for this class, but for others as well. Lately, I have come across someone named Bronfenbrenner (you should check him out), who started the idea of Bioecological Systems Theory.

This theory reveals the individual as being embedded in a microsocial system (those factors closest to him or her) and a macrosocial system (those environmental factors which put input pressure on the individual - such as geographic constraints, culture, language, etc.), as well as a chronosystem (timing and temporal perceptions). It is a great example of the systems thinking which we have been discussing in class.

Here is a link to some information about the theory:
http://pt3.nl.edu/paquetteryanwebquest.pdf

Do you have an example of the Bioecological System at work or life? Does this add to your understanding of systems theory?