PSYCH-101 Lecture Notes - Lecture 26: Prenatal Development, Fetus, Metacognition
30 Oct 2020
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Document Summary
Y chromosome contains tdf (testis-determining factor) gene which initiates development of testes at around 6-8 weeks. Various environmental influences can affect development: teratogens environmental agents that cause abnormal development. Vision is limited by poor acuity, lack of coordinated eye movements, and tunnel vision. After repeated exposure to certain sound, infants begin to stop turning to see source of sound, but would turn towards new sound. Visual field expands to almost adult size by six months, acuity continues to. Sound localization disappears in second month of life, returns after four or five develop afterwards months. Maturation genetically programmed biological process that governs growth. Cephalocaudal principle reflects tendency for development to proceed in head-to-foot direction. Proximodistal principle states that development begins along innermost parts of body and continues outward. Brain matures from inner parts (that govern basic survival functions) to cortex. Reflexes automatic, inborn behaviours elicited by specific stimuli. Physical and motor development are also influenced by experience and environment.
