| 4th Month |
| Physical: -Can lift head 90 degrees -Can sit with arms propped -Reaches objects -Rolls front to side -Can stand up with help |
| Mental: -Becomes aware that things and people have labels (mama or dadda) -Starts to explore things by putting them in their mouth and tasting them |
| Language: -Sputters -Experiments with shape of mouth to change sounds |
| Social: -Greets caregiver -Likes social interaction -When tickled laughs hard -Social gestures begin: waves arms to signal that they want to be picked up |
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