When a person is looking for a way to communicate in alternative ways, they need to find something that really works for them. They need to try to find a voice that sounds natural. They want to try to find a way to be efficient. They want to be able to communicate as normally as possible, even though they're not using their biological voice.
Weight, height and body composition are important indicators for development. The tools used to measure these can be different for children with cerebral palsy.