Endogenous Pacemakers and Exogenous Zeitgebers Essay Plan

Here's an essay plan on the subject of endogenous pacemakers and exogenous zeitgebers. Use it if you want, I chose these studies/explanations as they had the most information to write about. When writing essays in psych remember about breadth and dept, 200 words approx for AO1 and 400 approx for AO2/3.