We are looking for bisexual men (18 + years) for a study on cognitive processes involved in making decisions about the sexual appeal of males and females. We are looking for this group in particular, as they are underrepresented in our research. The study will involve completing a survey, which includes questions about your gender identity, sexual feelings and sexual behaviour. Additionally, you will be presented with nude images of males and females repeatedly on a computer screen and you will be asked to respond to these images using the keyboard. Participation takes place at King's College London's Guy's Campus, near London Bridge tube station, and should take no longer than 45 minutes. There is £10 cash compensation for your time. To check your eligibility, email asking for a link to the screening form.