PSY 223 Lecture Notes - Lecture 4: Synaptic Pruning, Moro Reflex, Myelin
Document Summary
By the end of the first year of postnatal life, the average american child weighs about 20lbs, and is about 30inchs long more than double his/her height and weight at birth. Physical growth: easy to observe and quantify tells is child is developing normally correcting. Isn"t just growth; it"s directed, multifaceted, and sometimes self- Strongly influenced by larger genetic and cultural factors. Proximodistal progresses from the center of the body outward. Independence of systems: principle that asserts that not all parts of the body develop along the same timetable. Canalization: development tends to follow, and return to, a normative course. Genetic forces make a correction as soon as a change is possible. Individual differences: variation among individuals on a characteristic. Central nervous system (cns): division of the nervous system that consists of the brain and spinal cord, processes information and directs behavior. Subcortical structures: control state whether we are asleep, awake and arousal (emerge first in development)
