| Contents |
1. Where are gays found? -- Who are you calling gay? -- Either/or -- The sexual lie detector -- Homosexuality is not common, but it is stable -- 2. The failure of psychosocial theories -- Psychoanalytic ideas -- Social learning theory -- The seduction hypothesis -- Child-rearing effects -- Cross-cultural comparisons -- Bem's alienation theory -- Therapy for sexuality? -- 3. Not all in the genes -- Family connections -- Genes versus environment -- Which genes, where? -- The mitochondrial DNA theory -- Mechanism of the genetic effect -- 4. Is Homosexuality adaptive? -- Kin selection -- Parental manipulation -- Balanced polymorphism -- The value of same-sex bonding -- How much can we learn from animal behaviour? -- A new scenario -- 5. Hormones in the womb -- How hormones work -- Middle-sex -- Finger lengths -- Fingerprints -- Auditory mechanisms -- Do gay men have bigger penises? -- Physical growth -- Onset of puberty -- Maternal stress and substance use -- Developmental instability -- 6. The big brother effect -- The 'fraternal birth order effect' -- How many brothers does it take to make you gay? -- Social environment and the big brother effect, is there a link? -- The mother's immune system -- The H-Y antigen -- 7. The gay brain -- The hypothalamus -- Lesbianism and the limbic system -- Cognitive abilities -- Brain asymmetry -- Handedness and sexual orientation -- Conclusion -- 8. Childhood indications -- Feminine boys and masculine girls -- CGN, learning and prenatal factors -- Adult 'psychological gender' -- CGN and psychological health -- 9. Are there different types? -- Perceptions -- The research -- Sex hormone comparisons -- Finger-length ratios -- Conclusions -- 10. The science of sexual orientation and society. |
