Compare mechanistic and reciprocal interactionism I don;t understand can someone help me?

There's not much about this terminology online that I can find except where other students have asked the question again and again.

http://www.google.com/search?hl=en&source=hp&biw=1189&bih=614&q=mechanistic+and+reciprocal+interactionism+definition&oq=mechanistic+and+reciprocal+interactionis&aq=1&aqi=g2g-j1g-m2&aql=&gs_sm=c&gs_upl=2462l8890l0l10977l2l2l0l0l0l0l653l1008l3-1.0.1l2l0