Table 2.

Battery of neurocognitive tests for participants in the 30-Day Challenge study^a.

Test name	Comments	Cognitive domain
NIHb toolbox—Fluid [43]	Dimensional change card sort Flanker inhibitory control and attention Picture sequence memory List sorting Pattern comparison	Executive function Executive function and attention Episodic memory Working memory Processing speed
NIH toolbox—Crystalizedc [43]	Picture vocab Oral reading recognition	Premorbid intellect
Montreal Cognitive Assessmentc [23]	N/Ad	General screen cognitive function
Trail Makings Test, Part A [44]	Cognitive flexibility	Graphomotor processing speed
Trail Makings Test, Part B [44]	N/A	Graphomotor processing speed and executive function
Stroop Test [45]	Cognitive flexibility	General processing speed and inhibitory function
Hopkins Verbal Learning Test-Revised (HVLT-R) [46]	Included 3 learning trials, a delayed recall, and a recognition trial	Verbal learning and memory
Wechsler Adult Intelligence Scale-Fourth Edition (WAIS-IV) [47]	Symbol search Digit span Letter number sequencing	Graphomotor processing speed Auditory attention Working memory
Adaptive Rate Continuous Performance Test (ARCPT)e [48]	N/A	Maintained attention and inhibitory control
Controlled Oral Word Association Test [49]	FAS or CFLf	Language function, processing speed, and verbal fluency
Animal Fluency [50]	N/A	Semantic verbal fluency
Card Sorting Taskg [51]	N/A	Novel problem-solving and set-shifting
Grooved Pegboard Test [52]	N/A	Fine motor dexterity

^aUnless otherwise indicated, assessments were done at baseline, 30 days, 90 days, and 1 year after enrollment.

^bNIH: National Institutes of Health.

^cThe Montreal Cognitive Assessment and the NIH Crystalized measures were only obtained at baseline.

^dN/A: not applicable.

^eSome participants did the California Computerized Assessment Package (CALCAP) at baseline and then switched to Adaptive Rate Continuous Performance Test at follow-ups (30 did the Adaptive Rate Continuous Performance Test at baseline).

^fCFL: Measure of spontaneous production of words beginning with 3 letters (FAS or CFL).

^gThe Wisconsin Card Sorting Task was collected as part of the COVID-19 supplement and was completed by 20 participants.