Table 1.

Modules included in the Daylight digital cognitive behavioral therapy app.

Intervention module	Brief description	CBTa principle	Learning goals
Worry scheduling and worry time	Scheduling a specific time and pace to worry (Worry Scheduling), and then cycling through worrisome thoughts (Worry Time).	Stimulus control	Learn to associate worry with a designated time and space. Learn to delay worry until a designated time. Learn to tolerate worry without avoidance.
Tense and release	Tensing and releasing muscles with relaxation cues.	Applied relaxation	Increase awareness of tension. Increase awareness of the difference between tensed and relaxed muscles. Learn to reduce muscle tension.
Thought challenger	Identifying catastrophic or unhelpful thoughts and using challenge questions to develop new perspectives on these thoughts.	Cognitive restructuring (decatastrophizing)	Increase awareness of catastrophic and unhelpful thoughts. Learn to challenge catastrophic thoughts. Increase cognitive flexibility.
Worry exposure	Imagining the “worst case scenario” or feared outcome of a specific worry.	Imaginal exposure	Learn to tolerate emotions associated with feared outcomes. Facilitate cognitive reappraisal of feared outcomes. Facilitate habituation to fear response (ie, fear extinction).

^aCBT: cognitive behavioral therapy.