Psychological Development Across the Lifespan


What physical and behavioral milestones are typical during the first year of development in a child?

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

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