Are you anxious in social situations? Do you fear meeting new people or public speaking? If so, you may be eligible to participate in a research study at CU-Boulder! Participation involves using a mobile app over 8-14 days and completing an MRI scan. Participants can earn up to $80. In order to participate, you must: Be 18-40 years of age Be right-handed Own a smartphone Qualify based on a short online survey and phone interview If you are interested in participating, please contact us at theMOSTstudy@gmail.com.