Presbycusis
--Sex Difference
tSeveral researchers have studied primitive cultures to determine the influence of aging on hearing acuity in the absence of occupational noise.  These studies found aging effects on hearing, but observed no sex difference in the hearing loss.  Goycoolea MV, 1986;  Rosen S, 1962
     
tAnimal studies have also found no sex difference.
Hunter KP, 1987 
    
tIt has been proposed that the difference between male and female thresholds as a function of age, is due to environmental factors.  The most important of which is noise exposure. Kryter KD, 1983