Table 1.
Description of Participant Characteristics at Time 1
| M | SD | Min | Max | |
|---|---|---|---|---|
| Chronological age in months | 34.7 | 7.2 | 20.4 | 47.9 |
| MSEL early learning composite | 50.9 | 4.1 | <50 | 122 |
| Mental age in months | 12.1 | 4.7 | 3.75 | 26.5 |
| Developmental ratio | .36 | .15 | .17 | .75 |
| MB-CDI words understood | 75.8 | 85.4 | 0 | 385 |
| MB-CDI words said | 3.7 | 5.0 | 0 | 18 |
| UCS number of different words | .7 | 1.2 | 0 | 5 |
| ADOS social affect and restricted and repetitive behavior total | 22.6 | 3.8 | 6a | 28 |
Note. MSEL = Mullen Scales of Early Learning; Early Learning Composite reflects standard scores; Mental age = mean age equivalent across Visual Reception, Fine Motor, Receptive Language, and Expressive Language subtests of the MSEL; Developmental ratio = mental age/chronological age; MB-CDI = MacArthur-Bates Communicative Development Inventories: Words and Gestures checklist; UCS = Unstructured communication sample with examiner. ADOS = Autism Diagnostic Observation Schedule.
a
Only 1 child scored 6, the next to lowest score was 15.