[Analysis of word perception in deaf children. A longitudinal study].

The assessment of speech perception and speech reading has been studied with the phonetic test of J.C. Lafon (lists of 17 french words with 3 phonemes each).

[Hearing in the elderly and hearing aids].

Statistically progressive deteriorations in the population, due more to pathological impairments than to aging properly speaking, must be distinguished from presbycusis. The onset of auditive impairment varies with genetic factors. In a statistical audiometric study, it is found that the better the hearing of a subject before the impact of presbycusis, the better the chances are of maintaining hearing; the opposite applies in the case of major auditive deterioration.