|
Appendix 3
Movement and Learning Patterns of the Unborn Child and
The Development of the Senses
|
Yawning
|
Timing
|
Source |
Has been observed.
|
9th week after conception |
de Vries (1985), p 116 |
| First occurs. |
9 1/2 - 13 1/2 weeks after conception |
Nijhuis/de Vries, p 5 |
|
