HYPOTHESES It is hypothesized that the Egyptian-Arabic ABILHAND-Kids 21-item will be psychometrically appropriate to be used with Egyptian children with cerebral palsy.

BACKGROUND Upper extremity functional impairment is a common problem in children with cerebral palsy. This has a significant impact on the children's manual ability which leads to activity limitation and participation restriction. The ABILHAND-Kids is a parent-reported outcome measure that quantifies the manual ability of children with CP. ABILHAND-Kids measures a child's ability to manage 21 daily activities that require the use of the upper limbs. The ABILHAND-Kids demonstrated very good measurement properties and is currently available in English, French, Dutch, Sweden, and Polish. It was also translated and adapted into the classic Arabic language in Saudi Arabia; in their study removal of two items resulted in a 19-item, valid, and reliable unidimensional scale meeting the requirement of the Rasch model without establishing measurement invariance between cultures. A linguistic adaptation is not sufficient to prove cross-cultural validity as item difficulties may vary across countries due to translation errors or cultural differences.

Inclusion Criteria:

- Parents of 100 children with CP will be recruited.

Exclusion Criteria:

• mental retardation

cerebral palsy