All children tested were at the age of 4; 0-4; 3, 4; 8-5; 1 and 5; 8-5; 11 years and monolingual Icelandic-speaking with normal hearing, intelligence and language development, as reported by parents.
Börnin voru á aldrinum 4; 0-4; 3 ára, 4; 8-5; 1 árs og 5; 8-5; 11 ára, eintyngd með íslensku að móðurmáli og talin hafa eðlilega heyrn, greind og málþroska.