1 = School 1
2 = School 2
3 = School 3
4 = School 4
5 = School 5
6 = School 6
7 = School 7
8 = School 8

1 = Male
2 = Female

1 = TD
2 = ASC

How often do the participants use iPads in school?
0 = Less/never
1 = 1 or more times a week

How often do the participants use PECS in school?
0 = Never
1 = Every day

Condition - 2D, 3D automatic or 3D interactive
1 = 2D
2 = 3D_automatic
3 = 3D_manual

Consistent symbolic responding in mapping stages (robust or not)
1 = not robust
2 = robust

Consistent symbolic responding in generalisation stages (robust or not)
1 = not
2 = robust

Did the participant choose all 4 correct pictures and objects in the retention test?
0 = Incorrect
1 = One correct
2 = Both correct