A high-amplitude sucking procedure, with synthesized female speech, was used to ascertain the effects of fundamental frequency, amplitude, and duration on discrimination of polysyllabic sequences. Results suggest that the exaggerated suprasegmentals of infant-directed speech may function as a perceptual catalyst, focusing the infant's attention on…

Examined the effects of rounded and unrounded vowels on the perception of the voiceless fricatives "s" and "sh" by adults and by young children who could and could not produce both sounds. Concluded that productive mastery is not critically responsible for perception of the distinction between the two phonemes or the…

Comparison of 80 beginning first graders, half receiving phonics instruction and half receiving whole word instruction, found, for both groups, those above grade level in reading excelled in phonological recoding and application of grapheme-phoneme correspondence rules while those below grade level applied visual-orthographic knowledge more than…

This study of 94 college undergraduates, including 24 with a reading disability, found that speech perception was strongly related to 3 of 4 phonological variables, including short-term and long-term auditory memory and phoneme segmentation, which were in turn strongly related to reading. Nonverbal temporal processing was not related to any…

Describes three experiments that examined the processing of speech by dyslexic readers. Compares their performance with that of age-matched and reading-ability-matched controls. Shows that dyslexics have difficulty with the nonlexical procedures involved in verbal repetition. (HOD)

This study evaluated English phrases and sentences in a minimal-pairs syllable-test format, to assess use of acoustic cues in audiovisual perception of speech by persons with severe or profound hearing loss. Of 48 items, 39 were visually confusable; 16 items identified as visually confusable were reliably identifiable when sound was added.…