What is the primary developmental milestone for infants around 10-13 months?

The primary developmental milestone for infants around 10-13 months is walking without assistance. During this period, most infants begin to take their first independent steps. This marks a significant advancement in their gross motor skills, as they transition from more stable forms of mobility, like crawling or walking with support, to independent walking.

Walking independently not only enhances physical development but also boosts cognitive and social skills. As infants explore their environment, they become more curious and engaged with the world around them. This newfound mobility allows them to interact with various objects and people, fostering their learning and development.

While walking with support is common around this age, the primary milestone is the achievement of walking independently. Crawling, which typically occurs earlier, is being superseded by this more advanced skill. Running is a later milestone, usually developing as toddlers grow more confident in their walking abilities. Thus, the most significant developmental milestone around 10-13 months is indeed walking without assistance, showcasing a crucial step in an infant's growth and independence.