Table 2.

Schedule of enrollment, interventions, and assessments.

Schedule			Study period
			Enrollment	Allocation (baseline)	Post-allocation			Close-out (9 months)
					Intervention administration	Immediate post-intervention	3 months
Enrollment
	Eligibility screen		X	—a	—	—	—	—
	Informed consent/assent		X	—	—	—	—	—
	Allocation		—	X	—	—	—	—
Interventionsb
	VR GMIc		—	—	X	—	—	—
	Web-based GMId		—	X	—	—	—
	Web-based STe		—	X	—	—	—
Assessments
	Youth self-report
		Children's Depression Inventory 2-Youth	—	X	—	—	X	X
		Screen for anxiety related disorders-Youth	—	X	—	—	X	X
		Primary control scale for children	—	X	—	X	X	X
		Secondary control scale for children	—	X	—	X	X	X
		Beck Hopelessness Scale-Short form	—	X	—	X	X	X
		UCLAf Loneliness Scale-Version 3	—	X	—	X	X	X
		Implicit personality theories questionnaire	—	X	—	X	X	X
		Attitudes toward therapy scale	—	X	—	X	X	X
		Program feedback scale	—	—	—	X	—	—
	Parent report
		Family demographics, youth treatment history	—	X	—	—	—	—
		Children's depression inventory 2-parent	X	X	—	—	X	X
		Screen for anxiety related disorders–parent	—	X	—	—	X	X
		Implicit personality theories questionnaire	—	X	—	—	X	X
		Attitudes toward therapy scale	—	X	—	—	X	X
		Brief symptom inventory-18	—	X	—	—	X	X

^aNot applicable.

^bEach ~30 minutes in length; randomized to receive 1 of 3.

^cVR GMI: virtual-reality growth mindset intervention.

^dGMI: growth mindset intervention.

^eST: supportive therapy.

^fUCLA: University of California Los Angeles.