Читать книгу Essentials of the California Verbal Learning Test - Thomas J. Farrer - Страница 20

Score	Age 8 average test-retest r12	Age 12 average test-retest r12	Age 16 average test-retest r12
List A Trials 1–5 Total	0.73	0.73	0.61
List B Free Recall Total	0.59	0.26	0.66
Short-Delay Free Recall	0.40	0.77	0.48
Short-Delay Cued Recall	0.75	0.49	0.59
Long-Delay Free Recall	0.59	0.62	0.60
Long-Delay Cued Recall	0.69	0.69	0.59
Semantic Cluster Ratio	0.56	0.58	0.53
Perseverations	0.90	0.32	0.31
Free-Recall Intrusions	0.74	0.56	0.85
Cued-Recall Intrusions	0.59	0.17	0.74
Recognition Hits	0.38	0.24	0.80
Discriminability	0.55	0.37	0.78
False Positives	0.62	0.35	0.78

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.