Factor structure of 23 scales of the Communication Profile for the Hearing Impaired (CPHI) (Demorest & Erdman, 1986, 1987) was examined in a sample of 1,226 patients who participated in the Aural Rehabilitation Program at Walter Reed Army Medical Center from 1985 through 1987. Five factors were identified: Adjustment, Reaction, Interaction, Communication Performance, and Communication Importance. To enhance clinical interpretation of the CPHI, it is recommended that factor scores be added to the communication profile.
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Demorest et al. (1989) studied this question.