RESUMEN
The Cognitive Behavioral Driver's Inventory (CBDI) was analyzed for its ability to discriminate brain-damaged patients from intact subjects who feigned brain-damage. In a sample of 251 neurologically impaired patients and 48 malingering volunteers, the computer-administered distinguished most malingerers from genuine patients. A jackknifed count revealed that the CBDI had 90% sensitivity for detecting malingerers, and 98% specificity for detecting non-malingering brain damaged patients. Success was due to the inability of malingerers to avoid quantitative errors: excessive response latencies, unusual error rates, inflated variability in response latencies, and excessive within-subject, between-item variability. The computer-administered battery may be an effective clinical tool for identifying patients who malinger brain-damage in neuropsychological testing.
RESUMEN
Investigated the active components of covert positive reinforcement (CPR) with a 2 X 2 X 2 factorial design (N = 64) that consisted of an S-R modality (covert vs. overt), a reinforcement procedure (covert vs overt), and a demand for expectancy of success (high vs. low). Posttreatment and follow-up results of the Behavioral Avoidance Test indicated that generally Ss in the overt S-R modality groups approached closer to the rat than did those in the covert groups (N = 64). More importantly, the S-R modality X demand interactions reflected that those Ss in the two covert S-R modality groups under low demand evidenced less approach than those Ss in the other six groups (p less than .01). Self-rating measures of anxiety on the Self-Rating Rat Anxiety Scale and the Fear Intensity Scale reflected overall decrements of fear from pretreatment to posttreatment and follow-up. Follow-up analyses indicated that plans should be made for the generalization of treatment effects by varying the treatment setting and perhaps by employing multiple therapists.