*2.1. Participants*

Participants were 6- to 17-year-old children and adolescents with DS (*n* = 73; M chronological age = 12.67, SD = 3.16). Average IQ was 48.70, SD = 4.76, and deviation scores were used for all analyses (M = 33.79, SD = 13.75; described below) [32]. There was an approximately equal ratio of males and females (54.8% male). Most participants were White (87.7%) and non-Hispanic (93.2%). Two parents reported that their child had ASD. Data from the participants in this study have been used in other manuscripts focused on the assessment of working memory outcome measures [33] and the association between executive function and adaptive skills [34].
