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PSYC 1000 Chapter Notes -Narcissism, Auditory System, Twin

Course Code
PSYC 1000
Harvey Marmurek

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Course: PSYC*1000 (DE)
Professor: Harvey Marmurek
Schedule: Summer, 2012
Textbook: Psychology – Tenth Edition in Modules authored by David G. Myers
Textbook ISBN: 9781464102615
Module 33: Sexual Motivation and the Need to Belong
What physiological factors affect human sexual behaviour, and what disorders disrupt the sexual response
William Masters and Virginia Johnson – monitored/filmed more than 10,000 sexual “cycles” – four stages
oExcitement phase (genital areas become engorged with blood, woman’s vagina expands and
secrete lubricant and breasts and nipples may enlarge
oPlateau phase – excitement peak as breathing, pulse, and blood pressure rates continue to
increase; penis fully engoged and some fluid may appear at tip; vaginal secretion continues to
increase, the clitoris retracts and orgasm feels imminent
oOrgasm – increased breathing, pulse blood pressure; woman’s orgasm not only reinforces
intercourse, it also increases retention of deposited sperm
oResolution – gradually returning to unaroused stated; male enters refractory period (incapable of
having another orgasm – few minutes to a day or more)
Sexual Disorders
oMasters and Johnson also understand and treat inability to complete sexual response cycle
Lack of sexual arousal or functioning
Lack of sexual energy and arousability
Erectile dysfunction (inability to have or maintain an erection)
Premature ejaculation
Pain or orgasmic dysfunction
Most experience sexual distress and relate it to their emotional relationship with
their partner during sex
How do hormones, and external and internal stimuli, influence human sexual motivation?
Sex hormones have two effects : They direct the physical development of male and female sex
characteristics, and they activate sexual behaviour.
oHormones more loosely influence sexual behaviour
oDays around ovulation – intercourse was 24% more frequent; women wear more sexually attractive
clothing, slightly higher voice pitch; men higher testosterone levels if smelling shirt by ovulating
woman than non-ovulating woman
oWomen with reduced testosterone levels can receive replacement patch and restore sexual activity,
arousal and desire
oMen – normal fluctuation – man to man hour to hour and little effect on sexual drive
Psychology of Sex
oHunger and sex similarities – depend on internal physiological factors; reflect interplay of excitatory
and inhibitory responses; influenced by external and imagined stimuli, and cultural expectations
oExternal Stimuli ~ men aroused when see, hear, or read erotic material (and so do women) –
though brains react differently
oImagined Stimuli ~ the brain is our most significant sex organ; 95% of men and women have sexual
Levels of Analysis for Sexual Motivation:
Biological Influences – sexual maturity; sex hormones, especially testosterone
Psychological Influences – exposure to stimulating conditions; sexual fantasies
Social-Cultural Influences – family and society values; religious and personal values; cultural expectations; media
-- all tie in to Sexual Motivations
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