Convergent and discriminant validity of the WIST

✍ Scribed by William R. Lovallo; Randal A. Sengel; William R. Leber; Blaine Shaffer; Vladimir Pishkin

• Publisher: John Wiley and Sons
• Year: 1983
• Tongue: English
• Weight: 313 KB
• Volume: 39
• Category: Article
• ISSN: 0021-9762
• DOI: 10.1002/1097-4679(198305)39:3<321::aid-jclp2270390304>3.0.co;2-p

✦ Synopsis

Tested the ability of the Whitaker Index of Schizophrenic Thinking (WIST):

( I ) to distinguish schizophrenics from nonschizophrenics (N = 30); (2) to agree with clinically rated severity of thou@ disorder; and (3) to correlate with a measure of generalized cognitive deficit. The WIST was not found to discriminate accurately schizophrenics from nonschizophrenics, but was found to agree strongly with the Shipley Institute of Living Scale, a measure of generalized cognitive dysfunction. Finally, clinically rated estimates of schizophrenic thinking (i.e., conceptual disorganization, unusual thought content) failed to predict WIST Index. The WIST appears to be primarily a measure of generalized deficit.