The action of an infant using furniture or other stable objects to elevate themselves from a seated or kneeling position to an upright, weight-bearing stance typically emerges within a predictable developmental window. For example, a nine-month-old may use the side of a crib to achieve this position for the first time.
This developmental milestone is a significant indicator of gross motor skill progression and growing strength. Successful execution of this action provides infants with a new perspective on their environment, fostering increased exploration and interaction. Historically, the age at which infants achieve this has been used as a benchmark for assessing typical development.