Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Children language skills compared to the corresponding reference group
| Children | Language skills | |||||
|---|---|---|---|---|---|---|
| n | M | SD | U | z | p* | |
| Study I | ||||||
| 3 year-olds | 13 | 11 | 1.3 | 390.0 | − 3.288 | 0.001 |
| 4 year-olds | 5 | 18 | 1.4 | 335.5 | − 0.917 | 0.359 |
| Study II | ||||||
| Intervention | 9 | 14.9 | 4.6 | 239.0 | − 2.197 | 0.028 |
| Control | 9 | 18.2 | 1.0 | 315.0 | − 1.269 | 0.204 |
| Reference group | ||||||
| 3 year-olds | 127 | 9.6 | 2.0 | |||
| 4 year-olds | ||||||
| Study I | 175 | 16.8 | 3.3 | |||
| Study II | 93 | 17.3 | 2.4 | |||
Bolded p-values are statistically significant (p < 0.05)
*Compared to the corresponding reference group
