PSYCO105 Lecture Notes - Lecture 4: 18 Months, Harry Harlow, White Matter
21 Apr 2016
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Document Summary
5 to 12 years (until onset of puberty) Development is a sequence of age related changes. Placenta forms (structure that allows nutrients to pass into the fetus from the mother"s bloodstream and bodily wastes to pass to the mother. Necessary for maturation and development of the embryo and fetus. Malnutrition disrupts development, and consequences depending on the trimester that is occurs in. During a healthy pregnancy a mother should gain between 25-35 pounds. Stress hormones fetus" bloodstream cross placenta increases motor activity. Prolonged stress: poor prenatal growth, premature birth, low birth weight, highly active baby, irritable, irregular sleep/feeding cycles. Ages 16-35 safest period for child bearing. Younger mothers: increased infant mortality, premature birth, low birth weight. Older mothers: increased risk of chromosomal abnormalities, complications during pregnancy and delivery. External agents that can harm the embryo or fetus. Innate reflexes: rooting, sucking, swallowing, grasping, babinski, moro. Moro - when the infant feels as if it is falling.
