The main goal of the present study is to contribute to a better understanding of sexual dysfunction in heterosexual, gay and lesbian. Participants will be asked to complete an online questionnaire assessing sexual behaviors, sexual difficulties, relationship satisfaction, as well as cognitive and emotional factors associated to sexuality. Besides the aiming to expand the scope of scientific knowledge, this study aspires to contribute to a better training of health professionals.

In order to achieve our goals, we invited heterosexual men and women, gays, lesbians as well as men who have sex with men and women who have sex with women to participate in our study. Volunteers should select the corresponding link:

• Heterosexual men,
• Gay men and/or men who have sex with men,
• Heterosexual women,
• Lesbians and/or women who have sex with women.

We would like to ask volunteers to answer all questions in order for us to collect valid information. Your participation will remain completely anonymous.

If you would like to have additional information about this project, please send an e-mail to: manuela.peixoto@ua.pt.