Something of interest- studies have found that young children who can easily repeat back made-up words are likely to acquire a good vocabulary. Researchers have also found that non-word repetition at age four is a good predictor of vocabulary and reading skills at age five. Difficulty in repeating non-words might indicate future problems with regard to learning foreign languages and acquiring vocabulary.
Simple test for slightly older children– Ask your child to repeat back each of the listed non words immediately after you say it. Good scores by age group match the scores of relatively high achieving children of high socioeconomic status from Cambridge, England.
Good Scores: At Least the number indicated
Four-year olds Five-year olds six-year olds
One-syllable One-syllable One-syllableAt least 5 at least 7 at least 8
Two-syllable Two-syllable Two-syllable At least 5 at least 7 at least 8
Three-syllable Three-syllable Three-syllableAt least 4 at least 6 at least 7
Four-syllable Four-syllable Four-syllableAt least 3 at least 5 at least 6
One-syllable non-words Two-syllable non-wordsSep Grall Pennel Ballop
Hond Fot Rubid Diller
Bift Nate Bannow Hampent
Smip Thip Glistow Sladding
Clird Tull Tafflest Prindle
Three-syllable non-words Four-syllable non-wordsDoppelate Bannifer Woogalamic Fenneriser
Barrazon Commerine Commeecitate Loddenapish
Thickery Glistering Penneriful Contramponist
Frescovent Trumpertine Perplisteronk Blonterstaping
Brasterer Skiticult Stopograttic Empliforvent
Please see link to normal hearing development in children
http://www.drpaul.com/growth/hearing.htmlKids' hearing losses often go undetected
http://blog.oregonlive.com/themombeat/2009/06/kids_hearing_losses_often_go_u.htmlHope that you found this interesting.