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Sitting as a Developmental Milestone
Sitting unassisted is a key developmental milestone that requires both coordination and muscle strength. On average, babies achieve this skill at 7 months old, with 90% of infants learning to sit alone between the ages of 5 and 9 months.
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Ch.9 Lifespan Development - Psychology @ OpenStax
Psychology @ OpenStax
Introduction to Psychology @ OpenStax Course
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OpenStax Psychology (2nd ed.) Textbook
Psychology
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