Table 1.

Participants.

Group	N (F/M)	Chronological age mean (year) range (years; months)	Verbal mental age mean (year) range (years; months)
WS	26 (13/13)	16.2 ± 7.2 (6;0–33;4)	7.46 ± 2.46 (3;3–11;1)
VMA	26 (13/13)	7.67 ± 2.7 (3;9–13;2)	7.62 ± 2.5 (3;5–12;3)
CA	26 (13/13)	16.3 ± 8.4 (6;5–40;6)	N/A

(Mean ± SD).