Version May 2024
| Age, months | Behavior |
| 0 to 1 | Turns eyes and head to look at light sources |
| Horizontal tracking | |
| Eye contact at 6 to 8 weeks | |
| 2 to 3 | Intense eye contact |
| Vertical and circular tracking | |
| Interested in mobiles | |
| Interested in "lip reading" | |
| 3 to 6 | Watches own hands |
| Reaches toward, later grasps, hanging objects | |
| Observes toys falling and rolling away | |
| Shifts fixation across midline | |
| Visual sphere of attention widens gradually | |
| 7 to 10 | Notices small bread crumbs |
| First touches them, then develops pincer grasp | |
| Interested in pictures | |
| Recognizes partially hidden objects | |
| 11 to 12 | Visual orientation at home |
| Looks through window and recognizes people, recognizes pictures, plays hide-and-seek |
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