LATEST INFORMATION

This section helps you resolve common app issues, including notification problems, reinstalling the app, or switching phones, so you can stay connected and complete your surveys without interruption.

This section explains how payment is earned for each study activity with examples showing how your participation adds up over time.

This section outlines the eligibility criteria for joining the study to help you quickly determine whether you qualify to participate.

This section walks you through what participation looks like over time, including daily app check-ins, short surveys, at-home saliva testing, and how the study is structured across multiple waves – all completed remotely.

This section explains how to complete your daily and end-of month surveys using the study app, including what to expect, when you respond, and helpful tips to stay on track during each study period.

This section provides step-by-step instructions for completing the at-home cotinine saliva test, including how to prepare, read your results, and upload a photo.