The variation however appears to be very great. With some extra attention some children can hold their own in a normal creche or nursery school. However other children especially when motorial development and physical growth remain behind, are unable to hold their own with children in the same age group. Their parents would then sooner choose for a child day centre for children with an intellectual disability. The children often understand more than they can express orally.
Oral expression develops late.
The children say their first words between their 2nd and 4th year or even later. When they feel they are not understood they can become frustrated which is expressed in anger and tantrums. The problems with eating and drinking can last well into infancy and early childhood, but end by themselves. Choking and vomiting remain a weak point with the children however. Most children learn to sit up and crawl between their lst and 2nd year.