1. Do Now
Describe the biopsychosocial explanation for sexual motivation.

2. Unit 8A Motivation and Emotion: Motivation
Sexual Motivation & Need to Belong

3. The Physiology of Sex – Sexual Response Cycle
Excitement phase
Genitals become engorged, vagina secrets lubricants
Plateau phase
Excitement peaks, penis fully erect (pre-cum), vaginal secretions increase
Orgasm
Rhythmic genital contractions, female orgasm helps with conception
Resolution phase
Body’s return to normal state, shortly after orgasm
Refractory period : male resting time when another orgasm cannot occur

4. The Physiology of Sex – Hormones and Sexual Behavior
Effects of hormones
Development of sexual characteristics
Activate sexual behavior
Estrogen (Female)
Testosterone (Male)
For women, during ovulation there tends to be increased desire for intimacy, wear more sexy clothing, and have 24% more sex
For men fluctuation in hormone levels have little effect of sex drive
if sex was a car hormones would be the fuel but psychological factors turn on the engine, keep it running, and shift it into gear

5. The Psychology of Sex External stimuli Imagined stimuli Porn
Seeing ,hearing, reading erotic materials
Men & women are equally aroused by these things
Negative impacts?
Imagined stimuli
Dreams
Sexual fantasies
… the brain is sexy!!

6. Levels of Analysis for Sexual Motivation – Biopsychosocial

7. Adolescent Sexuality Teen Pregnancy
Higher in US than Europe
Reasons
Ignorance
Minimal communication about Birth Control
Guilt related to sexual activity
Alcohol use
Mass media norms about unprotected promiscuity
Sexually Transmitted Infections (STIs)
Numbers are high, condoms can only do so much
Why young people refrain from sex
High intelligence
Religion
Father presence
Volunteer work in service

8. Sexual Orientation
Sexual Orientation: our sexual attraction towards a gender
Heterosexual: someone of the opposite gender
Homosexual: someone of the same gender
Origins of Sexual Orientation
No environmental factors contributing
Evidence supporting biological factors contributing
Same-sex behaviors in animal species
Body and brain chemistry- gay men and straight women = have brain hemispheres of similar size, straight men and lesbian women =right hemisphere is larger
Discovery of prenatal development
Genes

9. The Need to Belong Aiding survival Wanting to belong
Our ancestors did better in groups
Wanting to belong
Want to be in a relationship or part of a group
Sustaining relationships
We are afraid of being alone, we like social ties
The pain of ostracism
You feel bad when alone
Can lead to destructive behavior

10. Today
Questions
Review Crossword
HW= Study for Exam