Related Experiment Video
Updated: Oct 15, 2026

Modeling Verbal Behavior Deficits with the Stimulus Control Ratio Equation, SCoRE
Published on: May 14, 2019
Assessment of incomplete effort with the California Verbal Learning Test
R Baker1, J Donders, E Thompson
1Adler School of Professional Psychology, Chicago, Illinois, USA.
Abstract:
The false-positive rates of 2 formulas for the detection of incomplete effort on the California Verbal Learning Test (CVLT; Delis, Kramer, Kaplan, & Ober, 1987) were evaluated in a sample of 134 patients with traumatic head injury (THI) who had been carefully screened to eliminate any individuals who might be expected to have financial incentives for poor performance. One formula incorrectly identified only 7.46% of the sample as providing incomplete effort, confirming its potential usefulness in clinical settings. The other formula fared much worse, misidentifying an unacceptably high 18.66% of the sample. Lower levels of education were found to increase the likelihood of false-positive results with that formula. It is concluded that the CVLT holds promise for the evaluation of incomplete effort after THI but only within the context of a more comprehensive neuropsychological evaluation.
Related Concept Videos
Complementation Tests
Organisms heterozygous for different mutations are crossed pairwise in all combinations. If present on different genes, the mutations can complement each other by providing the missing...
Self-Evaluation Maintenance Model
Assessment of Ventilation II: Respiratory Depth and Rhythm
Respiratory depth measures the volume of air inhaled or exhaled during a breath. It can vary from shallow to deep and typically remains consistent when a person is at rest or asleep. Occasionally, individuals will automatically inhale deeply, known as sighing, which inflates the lungs with more air than normal breathing.
To assess respiratory depth, observe the degree of chest excursion or movement:
Learning Disabilities
Dyslexia
Dyslexia is a...
Non-Verbal Cues
Elaborative Rehearsals
The effectiveness of...
