Understanding Psychology (10th Ed)

K E Y T E R M S 
How prevalent are rape and other forms of nonconsenting 
sex, and what are their causes?
• Rape occurs when one person forces another person to 
submit to sexual activity. Often the victim is acquainted 
with the rapist. Sexual gratifi cation is sometimes the mo-
tivation for rape. More frequently, however, it is power, 
aggression, or anger. (p. 370)
• Childhood sexual abuse is surprisingly widespread. 
Most often the perpetrator is an acquaintance or a family 
member. (p. 371)
What are the major sexually transmitted infections?
• Acquired immune defi ciency syndrome, or AIDS, is 
bringing about profound changes in people’s sexual 
practices. Other sexually transmitted infections include 
chlamydia, genital herpes, trichomoniasis, gonorrhea, 
syphilis, and genital warts. (p. 372)
What sexual diffi culties do people most frequently encounter?
• Among the major sexual problems males report are erec-
tile dysfunction, premature ejaculation, and inhibited 
ejaculation. For females, the major problem is anorgas-
mia, or a lack of orgasm. Both men and women may suf-
fer from inhibited sexual desire. (p. 372)
E VA LU AT E
1.
The work carried out by 
in the 1930s was the 
fi rst systematic study of sexual behavior ever undertaken.
2.
Although the incidence of masturbation among young 
adults is high, once men and women become involved in 
intimate relationships, they typically cease masturbating. 
True or false?
3.
The increase in premarital sex in recent years has been 
greater for women than for men. True or false?
masturbation p. 364
heterosexuality p. 365
double standard p. 365
extramarital sex p. 367
homosexuals p. 367
bisexuals p. 367