The cocktail party effect involves auditory cortex mechanisms alone.
Indicate whether the statement is true or false
Question 2
Twin studies for sexual orientation:
a. have shown no clear difference in concordance rates between identical and fraternal twins
b. can be biased by the volunteer effect
c. are relatively easy to conduct, due to the large number of twins who are homosexual
d. have found similar identical twin concordance rates for homosexual males and females