A derivation of a formula for the stability coefficient is presented and discussed in terms of test reliability over time. (PR)

Current tests used to measure the ability of M. D. candidates are as valid as can be expected. It is planned to improve the reliability of these tests by better selection and orientation of examiners. (CK)

Describes reaction to an independent auditor's report that achievement gains made by students under a performance contract were invalid because the private firm responsible for the teaching was guilty of teaching to the test". (JF)

Potential problems such as scoring errors, interrater reliability, and length of administration in using the Adaptive Behavior Scale to assess functional behavior of severely disabled persons are reviewed, and solutions to the problems are offered. (Author/MC)

Assessed the consistency of classification of depression in college students in two studies. The stability of the Beck Depression Inventory was tested after one day, one week, and using subsequent responses for subjects retested the same day. Results showed repeated administration resulted in a decline of high scores. (JAC)

Studied whether neurologically unimpaired individuals can fake believable deficits on the Halstead-Reitan neuropsychological test battery. Results supported the belief that nonimpaired individuals of at least average IQ cannot alter their performances to appear significantly brain-impaired. (WAS)

Compared the Wonderlic Personal Test and the Wechsler Adult Intelligence Scale for a sample of 30 adults first tested in 1976. The two tests were similar in reliability of clinical classification, but the Wonderlic demonstrated fewer practice effects. Despite its ease of administration, Wonderlic intelligence estimates appear stable. (Author/JAC)