studies by pepper schwartz and philip blumstein (1983) and diane holmberg and karen l. blair (2009) contradict research indicating that women in same-sex relationships are more sexually satisfied than their heterosexual counterparts. schwartz concluded that lesbian couples in committed relationships have less sex than any other type of couple, and that they generally experience less sexual intimacy the longer the relationship lasts, though this study has been subject to debate (see lesbian bed death). holmberg and blair's study, on the other hand, published in "the journal of sex research", found that women in same-sex relationships enjoyed identical sexual desire, sexual communication, sexual satisfaction, and satisfaction with orgasm as their heterosexual counterparts. additional research by blair & pukall (2014) reported similar findings, such that women in same-sex relationships reported similar levels of overall sexual satisfaction and lower levels of sexual frequency. however, this recent study also reported that women in same-sex relationships spent significantly longer amounts of time on individual sexual encounters - often spending upwards of two hours on an individual encounter. consequently, what lesbians may lack in frequency, they may make up for with longer durations.