Related Experiment Videos
Assessment of incomplete effort with the California Verbal Learning Test
R Baker1, J Donders, E Thompson
1Adler School of Professional Psychology, Chicago, Illinois, USA.
Applied Neuropsychology
|June 23, 2000
Summary
One formula for detecting incomplete effort on the California Verbal Learning Test (CVLT) shows promise for traumatic head injury (THI) patients, with low false-positive rates. Another formula proved unreliable for assessing effort in THI evaluations.
Area of Science:
- Neuropsychology
- Clinical Psychology
Background:
- Assessing genuine performance in patients with traumatic head injury (THI) is crucial.
- The California Verbal Learning Test (CVLT) is used to evaluate cognitive function, including effort.
- Identifying malingering or incomplete effort is a challenge in clinical settings.
Purpose of the Study:
- To evaluate the false-positive rates of two formulas designed to detect incomplete effort on the CVLT.
- To determine the clinical utility of these formulas in patients with THI.
Main Methods:
- The study analyzed data from 134 patients with THI.
- Patients were screened to exclude those with financial incentives for poor performance.
- Two specific formulas for detecting incomplete effort on the CVLT were applied and their false-positive rates calculated.
Main Results:
- One CVLT formula demonstrated a low false-positive rate (7.46%), suggesting clinical utility.
- The second formula exhibited a high false-positive rate (18.66%), indicating unreliability.
- Lower educational attainment was associated with a higher likelihood of false-positive results using the less reliable formula.
Conclusions:
- The CVLT shows potential for identifying incomplete effort in THI patients.
- Its use should be integrated within a broader neuropsychological assessment framework.
- Caution is advised with certain effort-detection formulas due to high false-positive rates.