PSY 1102 Lecture Notes - Lecture 2: Twin, Twin Study, Psy

• School: University of Ottawa
• Department: Psychology
• Course: PSY 1102
• Professor: Najwa Haddad

Document Summary

The diferences with individuals and within a group of organisms. As individuals we difer physically, mentally, emoionally etc. How much are those diferences are geneic vs. from the environment (nature verse nurture) The behavior geneics study heritability (the study of our individual diferences due to geneics (see later)) studies include twin studies, adopion studies, family studies, temperament studies and physiological. Egg one sperm splits into two, babies are always the same sex: dizygoic fraternal twins. Two eggs and two sperms two babies, same or diferent sex. If a trait, behavior, disease etc. has a geneic component, idenical twins should be more similar than fraternal twins. If one idenical twin has alzheimer"s disease than the other one has. 60% chance of developing the disease as well where a fraternal twin only has 30% change of developing that disease. Same concept with divorce, idenical twin 5. 5 chance and fraternal twin 1. 6.