Premium
The PPVT‐R: Validity as a quick screen of intelligence in a postacute rehabilitation setting for brain‐injured adults
Author(s) -
Ingram Fred,
Caroselli Jerome,
Robinson Heather,
Hetzel Roderick D.,
Reed Karen,
Masel Brent E.
Publication year - 1998
Publication title -
journal of clinical psychology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.124
H-Index - 119
eISSN - 1097-4679
pISSN - 0021-9762
DOI - 10.1002/(sici)1097-4679(199811)54:7<877::aid-jclp2>3.0.co;2-c
Subject(s) - psychology , rehabilitation , physical medicine and rehabilitation , test validity , clinical psychology , psychometrics , neuroscience , medicine
The utility of the Peabody Picture Vocabulary Test‐Revised (PPVT‐R) as a surrogate for the Wechsler Adult Intelligence Test‐Revised (WAIS‐R) was investigated in 61 brain‐injured adult participants in a postacute rehabilitation setting. Idiographic comparison revealed substantial disagreement in clinical classification between the two instruments, and it is concluded that the PPVT‐R is not a good surrogate for the WAIS‐R for this purpose. In contrast, the PPVT‐R was judged an adequate surrogate for the WAIS‐R for the purpose of group comparison, as is common in biomedical research. Finally, contrary to prior report, the PPVT‐R was demonstrated to measure more than simply Vocabulary. As such, in the absence of independent validation research, perhaps the most parsimonious conclusion regarding what the PPVT‐R is measuring is that like each of the various subtests of the WAIS‐R, the PPVT‐R shares some of the variance of the construct termed intelligence , as well as demonstrates some unique variance that is likely comprised of error and, perhaps, a unique or different facet of intelligence. © 1998 John Wiley & Sons, Inc. J Clin Psychol 54: 877–884, 1998.