According to Tukey's AD post hoc pairwise comparison, the number of total moves scores in the ADHD-C (p=.0I7) and ADHD-Comorbid groups (p=.005) were significantly higher than in the control group.
Tukey's AD post hoc pairwise comparison revealed that the control group had significantly more completed categories than the ADHD-Comorbid group (p=.024) and less perseverative errors than the ADHD-C group (p=.026).
Post hoc comparison revealed that category perseveration (being unable to change categories and continuing with previous ones) of the ADHD-C group was significantly higher than the control and ADHD-I (p=.031) groups.
Tukey's post hoc group comparison indicated that children in the ADHD-I group repeated significantly more numbers backwards than children in the ADHD-C (p=.017) and ADHD-Comorbid groups (p=.009).
The purpose of this study was to examine the difference of EFs, such as inhibition, working memory planning, set shifting, and verbal fluency in four groups (ADHD-I, ADHD-C, ADHD-Comorbid, and controls).
Concerning the number of total moves, performance of the ADHD-C and ADHD-Comorbid groups was significantly lower than in the control group but not in the ADHD-I group.
The control group had less perseverative errors than the ADHD-C group.
The ADHD-C group had a higher level of inability to suppress an ongoing activity despite being told that it is no longer appropriate.
In addition, same studies evidenced no significantly different outcomes between the subtypes ADHD-I and ADHD-C or between the subtypes and control groups (17).
Children in the ADHD-C group had significantly more category perseverative errors than children in the ADHD-I and control groups, indicating that children with ADHD-C have difficulty in switching between the two different categories, and category perseverative errors may differentiate between the ADHD subtype groups and control groups.
The children in the ADHD-I and control groups performed significantly better than children in the ADHD-C and ADHD-Comorbid groups.