PSYC 110 Study Guide - Final Guide: Systematic Desensitization, Circadian Rhythm, Zygote
Document Summary
Zygote: takes 23:23 chromosomes, mother= x chromosomes; father= x or y, fertilized human egg. 2 weeks after conception from conception to implantation of fertilized egg in the wall of the uterus. Only half complete process: embryonic period. From implantation to end of the 8th week. Legs, arms, fingers, toes & beating heart. Near the 7th week sexual differentiation begins. @ 3rd month extensive movement (3 inches) @ 6th month- foot long, 3lbs last three months= extensive growth. Teratogens: environmental threats, especially harmful during first 6 weeks, morning sickness first 3 months. They see a blurry world; 20/400 vision; cant perceive shapes; lacks color vision: learns how to control body, learns first words. Concrete operational period: age 7-11, acquire capacity to perform mental operations but lack ability for abstract reasoning, can organize and order objects, difficulty with problems that do not flow from everyday experiences.
