The table below reflects the approximate age when most children show certain developmental milestones. It is important to recognize, however, that children vary in terms of the timing of their development.
| Typical Age |
Milestone |
| 2 months |
Hold head up |
| 2 months |
Social smile |
| 4 months |
Reach toward object |
| 6 months |
Sit up independently |
| 7 months |
Crawl |
| 8 months |
Separation anxiety |
| 8 months |
Stranger anxiety |
| 10 months |
Pull self up to standing position |
| 12 months |
Begin to walk |
| 12 months |
First words |
Milestones of the First Year of Life
