[5] Early studies that used ESM were coauthored by fellow students Reed W. Larson and Ronald Graef, whose dissertations both used the method.
It is best to avoid letting subjects know in advance when they will record their feelings, so they can't anticipate the event, and will just be "acting naturally" when they stop and take notes on their current condition.
Following on from this, Stieger and colleagues[12] used the experience sampling method to show that smartphones can be used to transfer computer-based tasks (CBTs) from the lab to the field.
Some authors also use the term experience sampling to encompass passive data derived from sources such as smartphones, wearable sensors, the Internet of Things, email and social media that do not require explicit input from participants.
[14] Qualitative studies suggest ESM may increase insight and awareness, help personalize treatments, and improve communication between patient and clinician.
PETRA is developed in collaboration with patients and clinicians and integrated in electronic personal health records (PHR) to facilitate easy access.