Toggle navigation Load unfinished survey Resume later Exit and clear survey Further Research: Exploring associations between dark tetrad personality traits and sleep behaviours default Caution: JavaScript execution is disabled in your browser or for this website. You may not be able to answer all questions in this survey. Please, verify your browser parameters. (This question is mandatory) There is the potential for future follow up survey or data collection to occur based on the outcomes of this study. Are you happy to be contacted to participate in any further data collection? Choose one of the following answers Yes No If yes, please provide your email address for contact: Note: your contact details will not be allocated to your previous survey responses and as such your responses will remain confidential. Submit Load unfinished survey Resume later Please confirm you want to clear your response? Exit and clear survey ×
