Several studies have assessed frequency of spontaneous thoughts about sex. Eysenck
(1971) found that men reported more frequent
thoughts about sex than women. Laumann, Gagnon,
Michael, and Michaels (1994) found that men think
about sex more often than women. Over half the men
in their national sample reported thinking about sex every day, whereas only one fifth of the women reported
thinking about sex that often.
Recent studies on uncontrolled and unwanted sexual
thoughts underscore the conclusion that the male sex
drive evokes more sexual thinking even if the person
does not wish to have those thoughts. Byers, Purdon, and
Clark (1998) found that male college students reported
more intrusive, unwanted, and even personally unaccept
-
able thoughts about sex than did college women (7.5 vs.
5.6 out of 20 possible sexually intrusive thoughts listed).
Vanwesenbeeck, Bekker, and van Lenning (1998) devel
-
oped a sexual compulsion scale with items such as "I
think about sex more than I would like" and "I must fight
to keep my sexual thoughts and behavior under control."
Men scored higher than women on this scale, indicating a
greater sense of being sexually driven.
Data on spontaneous sexual arousal and desire reveal
one way in which men seem to have a higher sex drive.
Beck, Bozman, and Qualtrough (1991) found that men
report more frequent sexual desire than women. Nearly
all the men (91%) but only half the women (52%) expe-
rienced sexual desire several times a week or more.
Their study also helped rule out the alternative explana-
tion that women find it more difficult than men to recog-
nize sexual desire, because men and women endorsed
essentially the same indicators of desire.
Likewise, a study by Knoth, Boyd, and Singer
(1988) concluded that the modal young man experi-
ences spontaneous sexual arousal several times per
day, whereas the modal young women experiences it
only a couple times per week. Eysenck (1971) likewise
found that men reported more frequent sexual desire
and more easily stimulated desire than women. Jones
and Barlow (1990) had a sample of young heterosexual
adults monitor their sexual feelings for 7 days, and the
men had more than twice as many sexual urges per day
as the women (4.75 vs. 2.00, respectively). The difference in internally
generated fantasies was not significant, but men had significantly more sexual fantasies
during masturbation than women.