... • 0 = exclusive contact with and erotic attraction to
the other sex
• 7 = exclusive contact with and erotic attraction to
the same sex
• Men are more likely to be found on far ends of
• Women who identify as heterosexual are 27
times more likely than heterosexual men to
express moderate or mor ...
... “Sexual orientation is not an indicator of mental
health. ‘Homosexuality, in and of itself, is not
associated with mental disorders or emotional
or social problems,’ declares the American
- David Myers
... – Changing one gene in a fruit fly can alter their sexual orientation
– Older-Brother/Fraternal birth-order - Link to having older brothers? See ABC
... Sexual dimorphism in the human bed nucleus of the stria terminalis. The nucleus (BNST) has significantly more neurons in men compared to women
regardless of male sexual orientation. Similar to women, male-to-female transsexuals have fewer neurons than men. In the one female-to-male
transsexual brain ...
spitzerhk.pps - Christian Mental Health
... J. Madeleine Nash, Time, April 27, 1998 p. 60-61
“Unlike the genes that are responsible for physical traits,
Hamer emphasizes, these genes do not cause people to
“Still, as critics emphasize & Hamer himself acknowledges,
genes alone do not control the chemistry of the brain.
Analysis of Wage Gap Between LGB Public
... government employment in California. For their study, they use data from the California
Health Interview Survey (CHIS), which is the nation’s largest state health survey.
Respondents were asked their sexual orientation and if they were employed by a
Biological Foundations of Sexuality
... Psychological Bulletin, 101:233-258 (1987). Sexual orientation in all mammals is primarily
determined by the degree to which the nervous system is exposed to testosterone and certain
other sex hormones during gestation.
Predictions of theory:
a. Homosexuals should have higher frequencies of other se ...
... – Animal research: influence of prenatal hormones . . .
Chapter 12 Motivation pt. 2: Sexual Motivation, Belongingness, and
... heterosexual men and homosexual men
and women. Hard to get at causation.
Identical twin brothers, 52% both will be
gay. Genes not everything.
Prenatal exposure to certain hormones.
Most psychologists believe that nature
more than nurture influences sexual
orientation but the answer has not bee ...
homosexuality nature or nurture
... adult brains, we don't know if the differences I
found were there at birth or if they appeared
Nimmons, D. (1994). Sexual brain. Discover, 5, 3.
Simpson, J. A., and
... unrestricted sociosexual orientation. These individuals report having a larger
number of different sexual partners in the past year, anticipate having more
partners in the next 5 years, have had more one-night stands (“hook-ups”),
fantasize more often about having sex with people other than their cu ...
Physical Development Use pp. 411-417, 445-448, and 455
... In the elderly, the immune system _______________ against “big” illnesses, such as _______________ and
A lifetime of antibodies, however, makes _______________ less common.
By 80, we’ve lost _______________% of brain weight.
_______________ lobes have atrophied, making us more blunt ...
Sexual Orientation Research Paper
... masculinity…which according to this distinction, individuals are born female or male but they
become feminine or masculine” (Weiten & McCann, 2007. p.481). Furthermore, sex is not the
same as gender as it refers to the biological characteristics one is born with (Weiten & McCann,
Sex r ...
... months. They don’t know about each other’s
sexual histories, but both assume the other has
never had sex (or at least unprotected sex) with
SEXUAL DIMORPHISMS IN HUMAN BRAIN (Swaab et al
... Cell number reach a peak value around 2-4 years postnatally, after which a sexual
differentiation occurs due to a reduction in cell number in females, whereas cell number
in males remains approximately unchanged up to age of 50 years
(Hofman and Swaab, Exp Clin Endocrinol, 1991)
CHAPTER 12: Motivation and Work
... Work supports us, connects us to others, and helps
define us. When work fully engages our skills, we
experience flow. We are completely involved and
have a diminished awareness of self and time.
EIM8e_Mod26 - Oakton Community College
... Hormones and Sexual Behavior
Sex hormones may have milder affects on humans than
on animals. Women’s sexual desire increases slightly at
ovulation when they are with a partner.
Women’s sexuality also depends more on testosterone
levels than on estrogen levels.
In men, normal fluctuations in testost ...
Motivation and Emotion
... same sex
– Gay—typically used to describe male
– Lesbian—typically used to describe
– Bisexual—sexual attraction for both
Chapter 12 PowerPoint
... of every 10 teenaged girls becomes
Mixed messages about contraception
Why Do Teenagers Become Pregnant?
Most teenagers seek contraceptive care one
year after first sexual activity.
Homework due Monday – Free Responses
... Male orgasms that expel sperm from the body into the vagina during intercourse may result in conception.
Evolutionary biologists have several hypotheses about the role, if any, of the female orgasm in the reproductive process.
1. In 1967, Desmond Morris , The Naked Ape, atests that female orgasm evo ...
Environment and sexual orientation
The study of the environment and sexual orientation is research into possible environmental influences on the development of human sexual orientation. Some researchers distinguish environmental influences from hormonal influences, while others include biological influences such as prenatal hormones as part of environmental influences.Sexual orientation is theorized as possibly being a combination of genetic, hormonal, and environmental influences, or simply a complex combination of nature and nurture. The American Psychological Association and Royal College of Psychiatrists acknowledge scientific theories that sexual orientation is caused by a combination of biological and postnatal environmental factors, but the American Psychological Association adds that despite much research into the genetic, hormonal, developmental, social, and cultural influences on sexual orientation, ""no findings have emerged that permit scientists to conclude that sexual orientation is determined by any particular factor or factors."" Scientific consensus is that sexual orientation, unlike sexual orientation identity, is not a choice, as there has been no strong evidence to validate it as a lifestyle choice.Although there is no substantial evidence which suggests parenting or early childhood experiences play a role in sexual orientation, some studies have linked parenting or familial environment to non-heterosexual identities, as well as childhood gender nonconformity and homosexuality.