Individuals who indicated an interest in participating were asked to read and sign written consent that explained the purpose of the study, procedures involved, risks and benefits, compensation, limits of confidentiality and participant rights. Participants were then provided with a confidential self-report questionnaire, containing a cover note with a brief introduction and basic description of genetic research on psychiatric disorders and some of the procedures associated with that kind of genetic research. Staff members were always present and available to respondents who needed further explanation of the consent form and the study procedures, or for a few who needed assistance in completing the questionnaire. Respondents were compensated $10 in cash for participating.
