摘要:The aim of this study was to investigate the association between masturbation frequency and sexual dysfunction among men and women, focusing on individuals with and without regular sexual partners, and to determine whether sexual compatibility (e.g., similar sexual desire levels and a match between desired behaviors and behaviors one’s partner is willing to engage in) in the relationship affects masturbation frequency. Here, 12,271 Finnish men and women completed an online survey about masturbation frequency, sexual function, and sexual compatibility with their partner for those who were in a relationship. The results indicated that masturbation frequency was positively associated with overall sexual function for women. This was moderated by relationship status, meaning that more frequent masturbation was associated with better orgasmic function and sexual satisfaction in single women, whereas the opposite was true for women who were in a relationship. For men, more frequent masturbation was associated with better erectile function for single men, and better ejaculatory latency but worse orgasmic function, intercourse satisfaction, and more symptoms of delayed ejaculation for men who were in a relationship. Lower sexual compatibility and sexual dysfunctions in the partner were associated with more frequent masturbation in both sexes. The associations between masturbation frequency and sexual function vary for single and partnered individuals, and are, for the latter group, further affected by sexual compatibility.