Generally, no functional role, except pleasure, is assigned to a women
's coital orgasm. Recently, however, researchers have suggested that w
omen can regulate the number of sperm accepted or rejected by manipula
tion coital orgasm timing. Baker and Bellis (1995) demonstrated that w
omen retain more sperm if coital orgasm occurs after, rather than befo
re male ejaculation. The present study investigated (i) factors associ
ated with coital orgasm frequency and (ii) whether women desirous of b
ecoming pregnant report more coital orgasms after than before their pa
rtners. Sixty-nine women rated their desire for pregnancy and answered
questions about their sexual behaviors, coital orgasm frequency, and
coital orgasm timing in relation to their partners. In regression anal
ysis, coital orgasm frequency was predicted by foreplay duration, mast
urbation frequency, and active sexual participation; desire for pregna
ncy did not predict coital orgasm frequency. Desire for pregnancy was
predicted by age (negatively), active sexual participation (positively
), and positively by orgasm after partner ejaculation. Consistent with
the Baker and Bellis hypothesis, frequency of orgasm after partner's
orgasm remained a significant predictor for desire for pregnancy after
controlling for degree of marital happiness, sexual foreplay duration
, and coital orgasm frequency.