Psychiatrists must have an M.D.; clinical psychologists must have a Ph.D. or Psy.D., and psychiatric social workers require ____

Twin studies, to assess heritability of sexual orientation, found which of the following?

a) There is no heritability factor for sexual orientation. b) Between fifty and sixty percent of identical twins were both homosexual if their twin was homosexual. c) There was only a slight heritability factor, and only for men. d) One hundred percent of identical twins were both homosexual if their twin was homosexual.

By the age of 9 months, most babies can match female faces with female voices

Indicate whether this statement is true or false.