This study examined changes in infants' performance in detecting tones as a funtion of time. Stimuli were presented in blocks of fixed frequency and intensity, rather than in random order. The findings of earlier studies that an observer can reliably tell from a 1-month-old's behavior when a pure tone is being presented, and that reinforcement of…

Compared the ability of poor and good readers in the second grade to make same-different matches of visual, auditory, and visual-auditory stimuli. (JMB)

Reviewed is research which has investigated failure in auditory processing as a cause of language and learning disorders (including defective articulation, aphasia, dyslexia, and specific learning disability) in children and adults. (Author/LS)

By electronically segmenting stimuli in German, two tests of perception of quantity related to tense or lax syllabic quantity were made possible. In one, the physical duration of the stressed vowel was shortened, and in the other, the occlusion of the consonant following the stressed vowel was shortened. (MSE)

This study investigated the contributions of fundamental frequency, formant spacing, and glottal waveform to talker identification. The first two experiments focused on the effect of glottal waveform in the perception of talker identity. Subjects in the first experiment, 30 undergraduate students enrolled in an introductory psychology course,…

A study examined what trained phoneticians do when they are presented with a transcription task to carry out without any knowledge of the dialect they are listening to and without any explicit phonological theory as a point of departure. The "best" tokens of three categories of potential assimilation (full, partial, and zero alveolar)…

Infants' use of auditory information in guiding their search behavior is examined in this study. The subjects were two groups of 9-month-old crawling infants. Group 1 consisted of 24 infants and Group 2 of 16 infants. The auditory stimuli was the mother's voice. Infants in both groups were initially positioned by their mothers behind a screen in a…

Twenty normal newborns, approximately 36 hours old, were tested using an auditory temporal conditioning paradigm which consisted of a slow rise, 75 db tone played for five seconds every 25 seconds, ten times. Responses to the tones were measured by instantaneous, beat-to-beat heartrate; and the test trial was designated as the 2 1/2-second period…

Described are clinical techniques and procedures useful in evaluations for exaggerated hearing levels. Discussed are considerations of the audiologist, his equipment, and erroneous findings; patient cooperation, anticipated hearing handicaps, detection of exaggeration, and order of test presentation; voluntary aid conduction audiometry,…

The intriguing possibility has emerged that the mechanisms processing information concerning different attributes might arrive at incompatible conclusions, so that stimuli are perceived which have paradoxical properties. This study demonstrated just such a situation. (Author/RK)

Studied the utility of cardiac habituation/response recovery as a measure for assessing infant cerebral asymmetries in auditory perception on a dichotic listening test. (Author/SB)

The differential effects of normal and emphatic stress on the auditory comprehension performance of nine aphasic and five normal adults were assessed. The aphasic subjects demonstrated significantly better performance for stimuli presented with emphatic stress. (Author/DB)

Examines the relation between aspects of the fundamental frequency (basic pitch) of 16 infant newborn cries and 28 multiparous mothers' perceptions of those cries. Results support the hypothesis that increases in fundamental frequency are related to increases in maternal perceptions of the intensity of the infant's cry. (Author/RWB)

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)