feminist writers Marcelle Karp & Debbie Stoller (1999) loosely referred to the 75/29 statistic as evidence that the orgasm gap existed, and to argue that more efforts were needed to sexually emancipate women, because 'there are a whole lot of women who most certainly aren't having fun yet'. These rates were different in non-marital straight relationships (cohabitational, long-term and short-term heterosexual relationships), with rates increasing to 80.5% for men and 43.0% for women orgasming during sex with their short-term partners, and 69.3% for men and 82.6% for women thinking their short-term partners always orgasmed. of sexual practices in the United States found that 75.0% of men and 28.6% of women always had orgasms with their spouse, while 40.2% of men and 79.7% of women thought their spouse always orgasmed during sex. Meanwhile, Masters & Johnson (1966) suggested that lesbian women had more orgasms than heterosexual women.
By 1990, authors were referring to Kinsey et al.'s observed gender disparity in sexual experiences as the "orgasm gap", citing the premarital orgasm rates per gender as an example. The 1953 Kinsey Report, titled Sexual Behavior in the Human Female, made several observations including 'differences in frequencies of orgasm' between unmarried American females (223 orgasms on average before marriage, with 36% having never had an orgasm before marriage 10% of all women in the study said they had never orgasmed at any period in their lives) and males (1523 orgasms on average before marriage all males in the study reported having had an orgasm before marrying).
2.1 Sexual behaviour and reaching orgasm.