Forty-one women filled out surveys about their heterosexual sexual behavior over the course of 30 days. These surveys tracked their menstrual cycles, sexual behavior, sexual desires, and orgasm frequency. Although the sample size was small, a number of borderline statistically significant (p < .10) trends emerged from the analysis: women experienced more copulatory orgasms on average when fertile and women who were not in relationships tended to have more frequent non-copulatory orgasms. Naturally cycling women also experienced significantly more non-copulatory orgasms when fertile. Although no strong conclusions can be drawn from the current sample, the results suggest many avenues for future research. / by Jesse B. Marczyk. / Thesis (M.A.)--Florida Atlantic University, 2011. / Includes bibliography. / Electronic reproduction. Boca Raton, Fla., 2011. Mode of access: World Wide Web.