What Should You Tell Participants About Wearing the Device to Bed? An Evidence-Based Protocol for Wearable Sleep Studies

One of the most consequential decisions in a wearable sleep study is made before a single night of data is collected: the wording of the instructions you hand participants about how to wear the device to bed. Fit, wrist choice, charging habits, and skin care are not housekeeping details. They determine whether the photoplethysmography (PPG) […]