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Myers EXPLORING PSYCHOLOGY (6th Edition in Modules). Module 26 Sexual Motivation James A. McCubbin , PhD Clemson University Linda Zimmerman Oakton Community College Worth Publishers. Sexual Knowledge Quiz. Sexual Motivation.

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Myers exploring psychology 6th edition in modules
Myers EXPLORING PSYCHOLOGY (6th Edition in Modules)

Module 26

Sexual Motivation

James A. McCubbin, PhD

Clemson University

Linda Zimmerman

Oakton Community College

Worth Publishers

Sexual knowledge quiz
Sexual Knowledge Quiz


Sexual motivation
Sexual Motivation

Sex is a physiologically based motive, like hunger, but it is more affected by learning and values.

Sexual response cycle
Sexual Response Cycle

  • Masters and Johnson (N= 382 f and 312 m) the four stages of sexual responding

    • excitement

    • plateau

    • orgasm

    • resolution

  • Refractory Period

    • resting period after orgasm, during which a

    • man cannot achieve another orgasm

Sexual disorder
Sexual Disorder

…a problem that consistently impairs sexual arousal or functioning

Can include:

lack of motivation, arousal

Premature ejaculation (men)

Erectile dysfunction (men)

Orgasmic dysfunction (women)


Sexual therapy



  • a sex hormone, secreted in greater amounts by females than by males

    • in nonhuman females, levels peak during ovulation, promoting sexual receptivity


  • most important of the male sex hormones

  • both males and females have it

  • extra testosterone in males:

    • stimulates growth of sex organs in the fetus

    • development of the male sex characteristics during puberty

Sexual orientation
Sexual Orientation

  • an enduring sexual attraction toward:

    • members of one’s own sex (homosexual orientation)

    • Members of the other sex (heterosexual orientation)

Brain differences
Brain Differences

  • On the average (the evidence is strongest for males), various biological and behavioral traits of gays and lesbians fall between those of straight men and straight women.

Brain differences1
Brain Differences

  • One hypothalmic cell cluster is larger in straight men than in women and gay men, same difference is found in male sheep displaying other-sex versus same-sex attraction.

  • Anterior commissure is larger in gay men than in women or straight men.

Genetic influences
Genetic Influences

  • Shared sexual orientation is higher among identical twins than among fraternal twins.

  • Sexual attraction in male fruit flies can be genetically manipulated.

Prenatal hormonal influences
Prenatal Hormonal Influences

  • Altered prenatal hormone exposure may lead to homosexuality in humans and other animals.

  • Men with several older brothers are more likely to be gay.

Brain differences and prenatal influences may contribute to observed gay-straight differences in childrens’: