Table 1. Cognitive tests administered in the POPPY study by cognitive domain with data transformations.

Cognitive domain	Test administered	Scoring system
Attention/Working Memory	One back task	Arcsine root-proportion correct
	Two back task	Arcsine root-proportion correct
Executive Function	Groton Maze Learning test	Total errors
	Set shifting task	Total errors
Processing speed	Detection task	Log reaction time (ms)
Visual Attention	Identification task	Log reaction time (ms)
Verbal Learning/Memory	International Shopping list task	Total correct
	International Shopping list task–delayed recall	Total correct
Visual Learning/Memory	Continuous paired associate learning test	Total errors
	Groton Maze Learning test–delayed recall	Total errors
	One card learning task	Arcsine root-proportion correct