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NCJ Number: 66859 Find in a Library
Title: COMPETENCY SCREENING TEST - VALIDATION AND MALINGERING
Author(s): D W STOCKBURGER; M D ANDERSON
Date Published: Unknown
Page Count: 26
Sponsoring Agency: National Institute of Justice/
Rockville, MD 20849
Sale Source: National Institute of Justice/
NCJRS paper reproduction
Box 6000, Dept F
Rockville, MD 20849
United States of America
Document: PDF
Type: Report (Study/Research)
Language: English
Country: United States of America
Annotation: THIS REPORT EVALUATES THE COMPETENCY SCREENING TEST (CST), AN INSTRUMENT DESIGNED TO IDENTIFY INDIVIDUALS WHO MAY BE LEGALLY INCOMPETENT, WITH RESPECT TO TWO CRITERIA: ITS VALIDITY AND THE POSSIBILITY OF FAKING INCOMPETENCY.
Abstract: THE CST WAS CONSTRUCTED BY MCGARRY AND OTHERS AS AN OBJECTIVE, PRELIMINARY SCREENING INSTRUMENT. THREE EXPERIMENTS WERE CONDUCTED TO TEST ITS VALIDITY AND THE POSSIBILITY OF MALINGERING. THE FIRST EXPERIMENT USED 208 MALE FEDERAL PRISONERS, SOME OF WHOM HAD PREVIOUSLY BEEN FOUND COMPETENT, SOME OF WHOM HAD BEEN FOUND INCOMPETENT, AND SOME OF WHOM WERE OF UNCERTAIN COMPETENCY. WHEN CRITERIA RECOMMENDED BY THE TEST'S DEVELOPERS WERE USED, VALIDITY WAS FOUND TO BE MODERATE. THE INSTRUMENT CORRECTLY IDENTIFIED INCOMPETENTS 70 PERCENT OF THE TIME AND INCORRECTLY IDENTIFIED COMPETENTS 27 PERCENT OF THE TIME. COMPETENTS INSTRUCTED TO RESPOND IN AN INCOMPETENT MANNER, HOWEVER, WERE CLASSIFIED AS INCOMPETENT IN 81 PERCENT OF THE CASES. MALINGERING WAS THEREFORE POSSIBLE WITH ONLY MINIMAL INSTRUCTION. THE SECOND STUDY, IN WHICH A SUBSAMPLE OF THE FIRST SAMPLE OF INMATES WAS USED, TRIED TO IDENTIFY MALINGERING INMATES USING A MULTIPLE-CHOICE FORM OF THE TESTS. RESULTS SHOWED THAT MALINGERING INMATES COULD BE IDENTIFIED OVER HALF THE TIME WHILE TRUE INCOMPETENTS WERE FALSELY LABELED AS MALINGERING ONLY 13 PERCENT OF THE TIME. IN THE THIRD STUDY, COLLEGE STUDENTS WERE THE SUBJECTS. RESULTS SHOWED THAT MALINGERING WAS POSSIBLE WITH MINIMAL INSTRUCTION AND THAT INTELLIGENCE TEST SCORES WERE SIGNIFICANTLY RELATED TO THE ABILITY TO PERFORM WELL OR POORLY ON THE CST. RESULTS INDICATED THAT THE CST IS AT BEST A CRUDE DEVICE WITH LIMITED SCREENING ACCURACY AND A NEED FOR REFINEMENT. TABLES AND A REFERENCE LIST ARE INCLUDED. (CFW)
Index Term(s): Competency to stand trial; Evaluation; Evaluation techniques; Psychological evaluation; Psychological research
To cite this abstract, use the following link:
http://www.ncjrs.gov/App/publications/abstract.aspx?ID=66859

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