The Washington Group/UNICEF Module on Child Functioning, finalized in 2016, covers children between 2 and 17 years of age and assesses functional difficulties in different domains including hearing, vision, communication/comprehension, learning, mobility and emotions. To better reflect the degree of functional difficulty, each area is assessed against a rating scale. The purpose is to identify the subpopulation of children who are at greater risk than other children of the same age or who are experiencing limited participation in an unaccommodating environment. The set of questions is intended for use in national household surveys and censuses.