Social development theory attempts to explain qualitative changes in the structure and framework of society, that help the society to better realize aims and objectives. Development can be defined in a manner applicable to all societies at all historical periods as an upward ascending movement featuring greater levels of energy, efficiency, quality, productivity, complexity, comprehension, creativity, mastery, enjoyment and accomplishment.
Hypothalamus is a region in the base of the brain, and it's very small. It releases hormones and has many important function. This sector of Carrie's brain was affected hence her non-reaction to some of the things she do before.