Infants (n=34) were tested on a speech-sound discrimination-in-noise task using the visual reinforcement of infant speech discrimination procedure. An adult control group was also tested. The infant-adult difference in discrimination threshold in noise was 6.9 dB. Advantages of this adaptive threshold procedure and possible applications are noted.…

Study measures the precision of auditory localization in 26- to 30-week-old infants using the adult minimum audible angle test. Results show that infants discriminate sound displacements of about 19 degrees, considerably less accurate than adult values of one to two degrees. (Author/RWB)

Long-term effects on auditory electrophysiology from early fluctuating hearing loss were studied in 27 children, aged 5 to 7 years, who had been evaluated originally in infancy. Findings suggested that early fluctuating hearing loss disrupts later auditory brain stem electrophysiology. (Author/DB)

Describes observer-based technique for assessing auditory capacities of infants from three to 12 months of age. This technique, referred to as the Observation-based Psychoacoustic Procedure (OPP), combines features of the Forced-choice Preferential Looking Technique and of the Visual Reinforcement Audiometry. Pure-tone detection and frequency…