en سوء مصرف و وابستگي به مواد Substance abuse and dependence پژوهشي Original Research Article <p style="text-align: justify;"><strong>Objective:</strong> Methamphetamine consumers use can have more efficient practices, be hyperactive,&nbsp;and take sexual risk-taking behaviors. These behaviors are particularly remarkable in&nbsp;homosexuals.<br> <strong>Methods:</strong> The present study was conducted based on casual-comparative method in the field of&nbsp;descriptive studies. Since 1 March to 25 June 2015, a total of 62 MSM subjects were selected&nbsp;based on chain method and divided into two groups of methamphetamine dependent (n=30) and&nbsp;non-dependent ones (n=32). sexual behaviors were examined by sexual behavior questionnaire&nbsp;based on 3 dimensions of sexual thoughts, sexual pleasure, and sexual hyperactivity. High-risk<br> sexual behavior were evaluated by sexual behavior questionnaire, their relation with participants&rsquo;&nbsp;educational status, occupation, age, income, and number of sexual partners in the last 3 months&nbsp;were analyzed using the parametric T-test.<br> <strong>Results:</strong> Data analysis showed that methamphetamine dependent MSM were significantly&nbsp;higher (P<0.01) in all 3 components of sexual thoughts and pleasure, hyperactivity, and sexual&nbsp;behavior compared to non-dependent group. However, regarding age, there was no significant&nbsp;difference between age and sexual risk behavior (P=0.05).<br> <strong>Conclusion:</strong> methamphetamine dependent MSM have a unique experience of thoughts,&nbsp;pleasure, and aspirations and have high tendency to high-risk sexual behavior. These findings are&nbsp;consistent with the previous research on the importance of stimulant consumption and specifically&nbsp;methamphetamine in creating high-risk sexual behavior. Controlling methamphetamine use<br> plays an important role in preventing the transmission of infectious diseases.</p> Methamphetamine, Gender identities, Homosexuality, Sexual orientation, Safe sex, Addiction 273 282 http://jpcp.uswr.ac.ir/browse.php?a_code=A-10-291-1&slc_lang=en&sid=1 Bijan Pirnia b.pirnia@usc.ac.ir Yes Department of Psychology, Faculty of Humanities, University of Science and Culture, Tehran, Iran. Setareh Mansour No Department of Psychology, Payame Noor University, Tehran, Iran. Soheila Rahmani No Department of Psychology, Karaj Branch, Islamic Azad University, Karaj, Iran. Ali Akbar Soleimani No Department of Psychology, University of Science & Culture, Tehran, Iran.