Cognitive z-score distributions by A/T group. Dot-boxplots depicting cognitive domain scores for memory (A), executive function (B) and language (C) composites across all A/T groups. A−/T− is denoted in blue, A−/T+ is denoted in green, A+/T− is denoted in orange and A+/T+ is denoted in red. Values reflect untransformed and unadjusted z-scores.