Santtila et al (2008)

Question 1

Which bibliacal approach

Answer 1

Genetic similarities

Question 2

How do we test for genetic similarities

Answer 2

Usually twin studies, adoption studies and family studies are used

Question 3

What are two types of twins

Answer 3

Monozygotic (MZ) - one egg

Dizygotic (DZ) - two eggs

Question 4

Aim

Answer 4

To study homosexual attraction rather than homosexual activity in monozygotic twins

Question 5

Method

Answer 5

The participants were given a questionnaire to determine their sexuality. Questions included - would you have sexual intercourse with someone who was attractive? If no one would ever find out? If the would-be partners issued it? etc.

Question 6

Results

Answer 6

The rates for self declared homosexuality for males was 3.1% while it was 1.2% for women. The rates for potential homosexuality were 32.8% for men and 65.4% for women.

Question 7

Findings

Answer 7

53% of MZ male twins had the potential to participate in homosexual intercourse