Table 2.
IDT scores for the ASD High ADOS group, the ASD Low ADOS group, the total ASD group and the typically developing comparison group
| IDT measures | High ADOS group (n = 51) | Low ADOS group (n = 80) | Total ASD group (n = 131) | Comparison group (n = 62) | Group differences | Effect sizes (ηp 2) | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Total ASD versus comparison | High ADOS versus comparison | Low ADOS versus comparison | ||||||||||
| M (SD) | Range | M (SD) | Range | M (SD) | Range | M (SD) | Range | |||||
| Number of turns | 13.5 (3.2) | 5–29 | 14.1 (4.7) | 7–21 | 13.9 (4.2) | 5–29 | 16.2 (4.8) | 5–25 | (High & Low) < C** | .08 | .13 | .07 |
| Reciprocal turn taking | .81 (.67) | 0–2 | 1.04 (.67). | 0–2 | .95 (.68) | 0–2 | 1.48 (.54) | 0–2 | (High & Low) < C** | .13 | .25 | .10 |
| Reciprocal drawing | .61 (.26) | 0–1 | .63 (.24) | 0–1 | .62 (.24) | 0–1 | .71 (.15) | .27–1 | (High & Low) < C* | .03 | .05 | .03 |
| Reciprocity in other’s initiative | .19 (.16) | 0–.54 | .17 (.14) | 0–.73 | .18 (.14) | 0–.73 | .41 (.17) | 0–.82 | (High & Low) < C** | .36 | .33 | .40 |
| Reciprocal flexibility | 1.7 (1.1) | 0–3 | 1.9 (.91) | 0–3 | 1.8 (.97) | 0–3 | 2.5 (.60) | 1–3 | (High & Low) < C** | .13 | .21 | .12 |
* p < .05; ** p < .001