Planning and execution time
The non-parametric Mann–Whitney U analysis for time to plan
indicated a statistical group trend for task 2 (U = 50; p= 0.08). Children in the DS group took more time to make their first
manual contact with the toys during task 2 compared to TD children
(Figure 4). There were no other group differences for time to plan for
task 1 and task 3.
For the execution time, we first compared the percentage of children in
the DS and TD group with ‘execution time’ data, and it was not different
for task 1 (DS = 76.92%, TD = 100%, ꭓ2 = 0.39,p = 0.53), task 2 (DS = 61.54%, TD = 92.31%,
ꭓ2 = 0.8, p = 0.37), and task 3 (DS = 69.23%,
TD = 69.23%, ꭓ2 = 0, p = 1). Execution data
was not calculated for children who ended the task earlier (<
60 seconds) due to non-engagement or non-compliance. The non-parametric
Mann–Whitney U analysis indicated a statistical group trend for
the total execution time (U = 53; p = 0.1), such that
children in the DS group (38.11 ± 8.1 seconds) took longer to complete
the task compared to TD group (20.15 ± 2.27 seconds).