Lecture 6: The genetic Approach to Personality

Question 1

what is the difference between heritability and inherited

Answer 1

• heritability = extent to which genetics predict behaviour traits
• inherited = behaviour or traits that is determined by genes

Question 2

measures of heritability

Answer 2

• can range from 0.0 to 1.0 where 0.5 means 50% of variability in phenotype is predicted by variation in genotypes

Question 3

what does MZ and DZ mean and stand for and what is the formula

Answer 3

• MZ = monozygotic (identical)
• DZ = dizygotic (fraternal)
• h^2= 2 x (rMz-rDz)

Question 4

what does h and c stand for

Answer 4

• h = additive effect of genotype on phenotype
• c = common or shared family environment effect

Question 5

attitudes and behaviour heritable for (religion, percieved social support, divorce)

Answer 5

• religion: h = 0.30 and c = 0.35
• perceived social support: h = 0.28 and c = 0.18
• divorce: h = 0.52 and c = 0.00

Question 6

heritability of sexual orientation

Answer 6

• kiney scale: 0 (straight) to 6 (gay af)
• h = 0.45 and c = 0.00 in males and h = 0.08 and c = 0.41 for females
• childhood non conformity c = 0.00 for both genders