Table 3: n = 84 (45 ages 12-24 months; 39 ages 24-36 months)..
p< 0.001 🟥, p< 0.05 🟦, p< 0.05 ⬛.
| Communication components | Ages 1-2 | Ages 2-3 | t |
| M | SD | M | SD |
| Pre-treatment | Pointing | 1.00 | 0.95 | 0.00 | 0.00 | 6.54 |
| Vocals | 2.00 | 1.26 | 3.00 | 1.21 | -3.69 |
| Speech | 1.00 | 0.98 | 2.00 | 1.12 | -4.36 |
| Situation comprehension | 2.00 | 1.13 | 3.00 | 1.30 | -3.78 |
| Language comprehension | 2.00 | 1.04 | 3.00 | 0.95 | -4.57 |
| Hand pulling | 6.00 | 1.45 | 7.00 | 1.47 | -3.14 |
| Screaming | 9.00 | 1.31 | 9.00 | 1.52 | 0.00 |
| Post-treatment | Pointing | 6.00 | 1.43 | 6.00 | 1.17 | 10.42 |
| Vocals | 8.00 | 1.17 | 6.00 | 1.50 | 6.85 |
| Speech | 5.00 | 1.41 | 4.00 | 1.36 | 3.29 |
| Situation comprehension | 7.00 | 1.48 | 6.00 | 1.61 | 2.97 |
| Language comprehension | 8.00 | 1.35 | 6.00 | 1.69 | 6.04 |
| Hand pulling | 1.00 | 0.98 | 3.00 | 1.03 | -9.14 |
| Screaming | 3.00 | 1.33 | 5.00 | 1.41 | -6.67 |
| Difference | Pointing | 5.00 | 1.64 | 3.00 | 1.17 | 6.35 |
| Vocals | 6.00 | 1.57 | 3.00 | 2.00 | 7.70 |
| Speech | 4.00 | 1.76 | 2.00 | 1.88 | 5.04 |
| Situation comprehension | 5.00 | 2.11 | 3.00 | 1.79 | 4.64 |
| Language comprehension | 6.00 | 1.71 | 3.00 | 1.92 | 7.69 |
| Hand pulling | -5.00 | 1.80 | -4.00 | 1.69 | -2.62 |
| Screaming | -6.00 | 1.71 | -4.00 | 1.95 | -5.02 |