Table 1.
Participant Characteristics at Each Time Point
| Study Entry* | Time 1 | Time 2 | |||||||
|---|---|---|---|---|---|---|---|---|---|
| M | SD | Range | M | SD | Range | M | SD | Range | |
| ADOS | 22.62 | 3.79 | 6– 28 | ||||||
| MSEL IQ | 51.63 | 3.79 | 49– 122 | ||||||
| MSEL Mental Age | 12.11 | 4.73 | 3.75– 26.5 | ||||||
| MSEL Expressive LAE | 7.96 | 4.15 | 1– 21 | ||||||
| MSEL Receptive LAE | 6.41 | 6.17 | 1– 30 | ||||||
| Chronological Age | 38.7 | 7.2 | 24– 51 | 46.7 | 7.2 | 32–59 | |||
| MCDI Expressive Vocabulary | 18.43 | 29.86 | 0– 181 | 61.22 | 85.41 | 0– 396 | |||
| MCDI Receptive Vocabulary | 115.15 | 110.98 | 0– 440 | 166.10 | 120.68 | 0– 396 | |||
| Duration HSJE (in seconds) | 65.08 | 58.60 | 0– 291 | 69.65 | 52.24 | 0– 189 | |||
| Number of Intervals HSJE + FI | 7.52 | 8.18 | 0–40 | 7.71 | 7.06 | 0–34 | |||
Note. ADOS = Autism Diagnostic Observation Schedule, HSJE = Higher Order Supported Joint Engagement, FI = Follow-in talk, IQ = Intellectual Quotient, LAE = Language Age Equivalent, MCDI = MacArthur-Bates Communication Development Inventories, MSEL = Mullen Scales of Early Learning, M = Mean, SD = Standard Deviation,
*
Study Entry is four months prior to Time 1