Dr. Sonia Lupien, Director at the Centre for Studies on Human Stress, at the University of Montreal, covers the biology and essential basics in defining and understanding stress. The hormonal cycles of stress are discussed, along with the causes and effects of dysregulation in adverse environments for developing children. Excessive exposure to stressors in addictive or conflict-filled contexts can literally modify both the manner in which one sees the world, and the processes by which memory is formed.