Practicality of Shortening the Porch Index of Communicative Ability This study investigated the practicality of developing short forms of the Porch Index of Communicative Ability (PICA). Stepwise regression procedures were performed using data from 222 complete administrations of the PICA to determine the accuracy of prediction of overall scores on the basis of data from either fewer subtests or ... Research Article
Research Article  |   September 01, 1975
Practicality of Shortening the Porch Index of Communicative Ability
 
Author Affiliations & Notes
  • Frank G. DiSimoni
    East Stroudsburg State College, East Stroudsburg, Pennsylvania
  • Robert L. Keith
    Mayo Clinic and Mayo Foundation, Rochester, Minnesota
  • Dennis L. Holt
    Mayo Clinic and Mayo Foundation, Rochester, Minnesota
  • Frederic L. Darley
    Mayo Clinic and Mayo Foundation, Rochester, Minnesota
Article Information
Research Articles
Research Article   |   September 01, 1975
Practicality of Shortening the Porch Index of Communicative Ability
Journal of Speech, Language, and Hearing Research, September 1975, Vol. 18, 491-497. doi:10.1044/jshr.1803.491
History: Received November 2, 1974 , Accepted February 14, 1975
 
Journal of Speech, Language, and Hearing Research, September 1975, Vol. 18, 491-497. doi:10.1044/jshr.1803.491
History: Received November 2, 1974; Accepted February 14, 1975

This study investigated the practicality of developing short forms of the Porch Index of Communicative Ability (PICA). Stepwise regression procedures were performed using data from 222 complete administrations of the PICA to determine the accuracy of prediction of overall scores on the basis of data from either fewer subtests or fewer items. Results indicated that the PICA is highly redundant and that it may be possible to develop useful shorter forms of it.

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