Standardization data from the California Verbal Learning Test, Children's Version (CVLT-C). Copyright ©1994 NCS Pearson, Inc. Used with permission. All rights reserved.
The test-retest sample consisted of 78 individuals tested between 9 and 49 days apart. Stability coefficients for 18 CVLT-II scores are listed in Rapid Reference 1.7. Test-retest coefficients were 0.82 for the Trials 1–5 T score, ranged from 0.57 to 0.88 for the recall z-scores, and from 0.27 to 0.86 for the error z-scores.
Due to the addition of the Alternate Form, alternate form reliability was also provided. The Alternate Form sample consisted of 288 nonclinical adults tested between 0 and 77 days apart. The administrations were counterbalanced, with 155 receiving the Standard Form first followed by the Alternate Form and 133 receiving the Alternate Form first followed by the Standard Form. Correlation coefficients for the 18 scores that can be hand scored are listed in Rapid Reference 1.8. Correlation coefficients were 0.79 for the Trials 1–5 T score, ranged from 0.51 to 0.76 for the recall z scores, and ranged from 0.27 to 0.76 for the error z scores.
Stability Coefficients for CVLT-II Scores, by Age
| Score | Average test-retest r12 |
| Trials 1–5 Correct (T score) | 0.82 |
| Trial 1 Correct | 0.57 |
| Trial 2 Correct | 0.60 |
| Trial 3 Correct | 0.58 |
| Trial 4 Correct | 0.82 |
| Trial 5 Correct | 0.76 |
| Trial B Correct | 0.61 |
| Short-Delay Free-Recall Correct | 0.81 |
| Long-Delay Free-Recall Correct | 0.88 |
| Semantic Clustering (Chance-Adjusted) Trials 1–5 | 0.74 |
| Total Learning Slope, Trials 1–5 | 0.27 |
| Total Intrusions | 0.63 |
| Total Repetitions | 0.30 |
| Long-Delay Yes/No Recognition Hits | 0.79 |
| Long-Delay Yes/No Recognition False Positives | 0.72 |
| Total Recognition Discrimination | 0.86 |
| Total Response Bias | 0.57 |
Standardization data from the California Verbal Learning Test, Second Edition Adult Version (CVLT-II). Copyright © 2000 NCS Pearson, Inc. Used with permission. All rights reserved.
CVLT3: The standardization sample for the CVLT3 consisted of 700 individuals selected to form a representative sample of the U.S. population, based on 2015 U.S. Census data. It was stratified based on age, sex, race/ethnicity, education level, and geographic region. Seven normative age bands were created: 16–19, 20–29, 30–44, 45–59, 60–69, 70–79, and 80–90. Each age band included 100 individuals. Sex was evenly represented for ages 16–59 and in proportion to the U.S. Census in ages 60–90.
Internal consistency was evaluated using alternate form reliability. The Alternate Form sample consisted of 213 nonclinical adults administered the Standard and Alternate Forms of the CVLT3 between 10 and 51 days apart. The administrations were counterbalanced, with 107 receiving the Standard Form first followed by the Alternate Form and 106 receiving the Alternate Form first followed by the Standard Form. Correlation coefficients are reported in the CVLT3 Manual for all normed scores for two age groups: 16–44 and 45–90. Alternate form correlations for the 18 core and index scores are listed in Rapid Reference 1.9. Correlation coefficients ranged from 0.79 to 0.83 for the index scores, from 0.50 to 0.71 for the recall scaled scores, from 0.49 to 0.67 for the recognition scaled scores, and from 0.15 to 0.66 for the error and process scaled scores.
Alternate Form Reliability for the CVLT-II
| Score | Average test-retest r12 |
| Trials 1–5 Correct (T score) | 0.79 |
| Trial 1 Correct | 0.52 |
| Trial 2 Correct | 0.61 |
| Trial 3 Correct | 0.71 |
| Trial 4 Correct | 0.70 |
| Trial 5 Correct | 0.71 |
| Trial B Correct | 0.51 |
| Short-Delay Free-Recall Correct | 0.73 |
| Long-Delay Free-Recall Correct | 0.76 |
| Semantic Clustering (Chance-Adjusted) Trials 1–5 | 0.61 |
| Semantic Clustering (Chance-Adjusted) Trials 1–5 | 0.35 |
| Total Learning Slope, Trials 1–5 | 0.38 |
| Total Intrusions | 0.55 |
| Total Repetitions | 0.46 |
| Long-Delay Yes/No Recognition Hits | 0.64 |
| Long-Delay Yes/No Recognition False Positives | 0.76 |
| Total Recognition Discrimination | 0.72 |
| Total Response Bias |
|