Certified Rehabilitation Registered Nurse (CRRN) Practice Exam

At what age is the developmental milestone of alternating feet on stairs typically achieved?

1. One

2. Two

3. Three

4. Four

The correct answer is: Three

The milestone of alternating feet on stairs is typically achieved around the age of three. At this stage in development, children are refining their gross motor skills and are able to coordinate their movements more effectively. This ability reflects not only physical development, such as improved balance and muscle coordination but also cognitive development, as it involves understanding the task of climbing stairs in a more complex manner than simply going up one foot after another. By age three, children generally demonstrate greater independence in mobility and are capable of performing activities that require more advanced motor skills. They start to gain confidence in their physical abilities and can follow directional commands better, which aids in their ability to alternate feet while climbing stairs. This development is a significant part of their overall growth in gross motor skills, allowing them to take on more complex physical challenges as they approach preschool age.