PSYCH211 Lecture Notes - Twin Study, Extraversion And Introversion, Bungee Cord
20 Dec 2012
School
Department
Course
Professor
Document Summary
All the children and parents took a personality test. They score at opposite ends of the scale. Low introverts are way more sensitive to stimulation than to high extroverts. It seems like the environment james lives in affected his behaviour (he was always around loud people, requiring him to be loud in order to be heard, etc. ) The environment is maintaining what we say in james at birth. Over time, the extremes tend to converge towards the middle. What helps james remain in extreme extroversion is not just due to genetic predisposition, but also maintained by environmental effects. One had more of a square face, the other had a more thin/round face. The more square face is usually seen as more dominant (unlike the thinner/rounder face) The twin that cares for the toy baby has the face that is not dominant. Chemical gradients in the womb affect the development of the face.
