Novapdfcom 11302009 fraternal birth order effect

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: terminants of Sexual Orientation Prenatal-sex-hormone activity & brain neural pattern hormone predispose preferences One theory Male fetuses with androgen insensitivity develop female anatomy; Raised as girls (Socialization processes processes influence orientation) Another theory Heredity Heredity affects orientation indirectly; Personality style ► Gender-conforming/nonconforming conforming/nonconforming Yet another theory activities ► Affects attraction 17 Create PDF files without this message by purchasing novaPDF printer ( 11/30/2009 Fraternal Birth Order Effect Greater Greater # older brothers (NOT sisters) ↑probability to have have homosexual orientation, Why? – Incestuous sexual encounter – If older brother is homosexual Not likely Raises awareness • Maternal immune hypothesis (biological): fetus has (biological): H-Y antigen guiding brain to male-typical pattern, typical but but sometimes goes to mom’s bloodstream Antibodies prevent fetal brain from developing ntibodies patte...
View Full Document

Ask a homework question - tutors are online