age-specific approximations of when a certain skill or ability should first occur in normal development are called developmental ________.

Age-specific approximations of when a certain skill or ability should first occur in normal development are called developmental milestones. Developmental milestones represent key skills or behaviors that most children are expected to achieve by certain ages, such as rolling over, crawling, walking, talking, and social interactions. They help track physical, cognitive, social, and emotional growth and support early identification of developmental delays.