PSYB30H3 Lecture 5: PSYB30 – Lecture 5 – Continuation of Genetics & Intro to Physiological Approaches to Personality
Document Summary
Psyb30 lecture 5 continuation genetics & personality and physiological. Major findings from behavioral genetic research: personality traits. Heritability estimates for major personality traits (extraversion, agreeableness, conscientiousness, neuroticism, openness to experience) of ~ 20 to 45% Sexual orientation: controversial and developing area, current evidence genes provide modest and indirect influence (via childhood gender nonconformity) on adult sexual orientation later on in life. Twins and the relative contribution of genes and the environment. Some attitudes show high heritability (~ 0. 60) whereas others show low or no heritability (e. g. beliefs in god) Not clear why only some attitudes appear to be heritable. Drinking and smoking: behavioral manifestation of personality traits. Neuroticism: drinking alcohol and smoking cigarettes are stable over time, both show evidence of heritability. Lykken & telegen (1996: measured happiness or subjective well-being on a birth-record based sample of 2,310 middle-aged twins, measured happiness using the well-being scale of multidimensional.
