Which percentage deviation from typical development indicates a delay?

A percentage deviation from typical development that indicates a delay is typically identified at 20%. This benchmark is commonly used in early childhood education and developmental assessments to determine if a child's growth or ability in a certain area is significantly behind what is expected for their age group. A 20% deviation suggests that the child's skills or development are substantially lower than those of their peers, often warranting further evaluation or intervention.

In developmental contexts, a 20% deviation serves as a threshold that can trigger action, such as additional support from educators, therapists, or other professionals who can help address the delay. This standard helps ensure that children receive the necessary resources and support to foster their development and learning in various areas, including cognitive, emotional, social, and physical growth.