Nonverbal sensitivity of normal-hearing and hearing-impaired older adults

The study compared the nonverbal decoding abilities of normal-hearing and hard-of-hearing older adults using the Profile of Nonverbal Sensitivity (PONS). The PONS test allowed the measurement of subjects' decoding accuracy for a variety of nonverbal cues presented under two auditory, three visual, and six audiovisual conditions. Nonverbal perceptual scores were lower for the hearing-impaired group under all presentation conditions. Perception of prosodic features of speech by hearing-impaired subjects was significantly related to low-frequency hearing sensitivity. Between-group differences in the decoding of visually transmitted nonverbal cues varied across visual presentation conditions. Results are compared to past deaf studies and related to processing strategies used by normal-hearing and hearing-impaired persons.