Table 2. Descriptive statistics for 4-month developmental outcomes.
| Bayley-III scale | N | M | SD |
|---|---|---|---|
| Cognitive raw score | 27 | 16.78 | 4.31 |
| Standard score | 27 | 95.37 | 16.69 |
| Language raw score | 27 | 20.30 | 4.09 |
| Standard score | 27 | 101.15 | 11.93 |
| Motor raw score | 27 | 19.52 | 5.76 |
| Standard score | 27 | 94.48 | 23.69 |
| Mobile conjugate reinforcement paradigm | N | M | SD |
| Learning block 1 ratio score | 25 | 2.69 | 2.93 |
| Learning block 2 ratio score | 22 | 3.29 | 2.99 |
| Learning block 3 ratio score | 20 | 4.69 | 6.01 |
| Immediate retention ratio score | 18 | 4.57 | 5.83 |
| Long-term retention ratio score | 25 | 1.58 | 1.34 |