When a child is young the term delay is sometimes used to describe developmental skills being at a lower level than expected for a child’s ages, such as language, motor, cognition or play. As a child becomes older, he or she may or may not “catch up” in all or some of these developmental skills. The term intellectual disability may later be used for some of these children, when it is felt that they will no longer totally catch up in their development based on reliable tests of cognition (intelligence), adaptive skills (everyday functioning), interaction with the environment or surroundings, and supports needed within the community.