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The purpose of this research study is to better understand how the brain and body work when healthy volunteers feel anxious.

Research Participation Includes: 1 outpatient visit, computer tasks, and exposure to unpleasant stimuli. Researchers will assess changes in heart rate, muscle activity, sweat responses, and respiration.

Who Can Participate: Healthy volunteers between the ages of 18-50, who have no current psychiatric disorder and are free of certain medical conditions.

You may not be eligible if you are pregnant, have current drug or alcohol abuse, heart disease, neurological disease, or any health problems that would interfere with the study or make it unsafe for you.

The study is conducted at the NIH Clinical Center in Bethesda, Maryland. The testing sessions may take up to 3 hours. There is no cost to participate and compensation is provided.

First Steps to Participate in Research: Call 1-301-402-4961, TTY:1-866-411-1010, or email Learn study details, ask about your eligibility, and consent to participate.

Refer to study 01-M-0185.

Principal Investigator: Christian Grillon

Are you interested in earning money for participating in a psychological study? We wish to run several subjects in a study of distance perception. Each subject will participate in six sessions, with each session lasting between 30 and 60 minutes. We will pay $15/session.  If you are interested in this please contact Professor Stephen Dopkins at

Check back soon for information on ongoing studies in the Psychology Department. You can contribute to psychological science, and some studies offer compensation! Undergraduate students - your participation in the psychology subject pool is invaluable. Thank you!

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