The psychometric characteristics of the Wechsler Memory Scale-Revised (WMS-R) are evaluated and related to its clinical utility. The accuracy of the scale scores is shown to be limited by their high standard error, low reliabilities, and consequent large standard errors of measurement. Specific procedures are discussed for establishing confidence intervals and for testing the significance of differences between scores. It is concluded that the WMS-R, like the original Wechsler Memory Scale, provides only a rough estimate of overall memory functioning. The multidimensional index scores have not been shown effective in describing the nature or the pattern of memory deficits. Recommendations for the clinical use of the WMS-R are provided.

The California Verbal Learning Test (CVLT) is a popular clinical and research test that claims to measure key constructs in cognitive psychology such as repetition learning, serial position effects, semantic organization, intrusions, and proactive interference. The psychometric characteristics of the CVLT are reviewed and related to the test's clinical utility. The utility of the CVLT is shown to be limited by its poor standardization and inflated norms. Further, the validity is limited because the CVLT uses multiple trials whereas the constructs it purports to measure are based on single-trial paradigms. The review proposes modifications to the CVLT and guidelines for its clinical use. It concludes that if the limitations of the CVLT are recognized, it can still make a useful contribution to the clinical assessment of verbal learning and memory.

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Neuropsychological tests are routinely used to make clinical judgements regarding the classification, diagnosis, or prediction of subject variables. The accuracy of those decisions depends on the discriminant validity of the tests used. The traditional method of validating psychological tests by comparing the mean test scores of reference groups is often unrelated to actual clinical discriminations. Alternative measures based on Bayesian probabilities are reviewed, with specific application to neuropsychological assessment.

Previous studies described the characteristics of individuals committed under sexual offender civil commitment laws in Arizona, Florida, and Washington. This study describes the diagnostic and risk profiles of 331 sexual offenders held under Wisconsin's sexual offender statute and compares them to the people held in those other states. Persons detained under Wisconsin's law substantially differ from those in the other states. This variability is attributed to differences in both diagnostic procedures and statutory risk thresholds. The authors believe this is the first study to directly compare diagnoses and risk measures of sex offenders referred for commitment in different states, thereby offering a more national view of who is detained under these laws.