Through this study, researchers at Temple University want to learn more about sleep and circadian rhythms, reward responsiveness, and emotion systems in teens.

You may qualify for a study if you meet the following criteria.

Inclusion Criteria:

• Ages 13-16

• Experience extremely high motivation and/or ambition (e.g., actively pursuing goals, showing enthusiasm for challenges, engaging in activities with passion and dedication)

• Located in Philadelphia, PA

• No current psychotic symptoms (hallucinations, delusions)

• No autism spectrum disorder

• No use of melatonin or photosensitizing medications

• No history of treatment with a bright light

• No shift work/have not traveled across multiple time zones in the past month

• Able to undergo MRI scan (no metal in the body, traumatic brain injury, pregnancy, or severe claustrophobia)

This is a 3-year long study involving several remote and one in-person visit per year.

During these sessions, participants will complete various tests including saliva sampling, self-reported behavioral measures, and fMRI scans of reward neural activity and functional connectivity. Participants will also complete interviews about reward-relevant life events, sleep, substance use, and mood and behavior. 

Participants will also be asked to wear an Actiwatch for one week each year during this study.

As a participant, you can receive up to $1075 for your time and effort.

You will receive $925 for completing the entire 3-year study with a bonus of up to $150 for completing all components ($140 for completing 90%, etc.)

There is no cost for you to participate in our research study.