What is the ceiling of the WAIS?
As on the WAIS-R, even if a subject receives a raw score of zero on a subtest, they can receive one to five scaled-score points on that subtest. Uniformity is not found across the range of scaled scores for each subtest. On certain subtests subjects may reach a ceiling more quickly than on others.
What is measured by the WAIS?
The Wechsler Adult Intelligence Scale (WAIS) is an intelligence test first published in 1955 and designed to measure intelligence in adults and older adolescents.
What’s the highest score you can get on the WAIS?
The highest score that can be obtained on the Wechsler Intelligence Scale for Children-III, which is the preeminent test of intelligence used in the United States today for identifying gifted children, is 160. For the Wechsler Adult Intelligence Scale-III, the ceiling is slightly lower: 155.
What do WAIS-IV subtests measure?
The subtest was developed to measure non-verbal reasoning and the ability to understand abstract visual information. The individual is presented with a picture of a pair of scales in which there are missing weights, and they have to choose the correct weights to keep the scales in balance.
Is the WAIS-IV valid?
Reliability and Validity The Wechsler Adult Intelligence is a well-established scale and it has fairly high consistency. Over a two to twelve week time period, the test-retest reliabilities ranged from 0.70 (7 subscales) to 0.90 (2 subscales). Inter-scorer coefficients were very high, all being above 0.90.
Is the WAIS-IV reliable and valid?
The reliability and validity of the WAIS-IV is outlined in the Technical and Interpretive Manual [1]). The main reliability figure based on the standardisation sample for Full Scale IQ was 0.98, indicating good internal consistency.
What is the consistency of the WAIS-III?
The classification consistency is 95 percent or higher when a 95 percent-confidence interval was used. Similarly, the WAIS-III is also highly correlated and consistent with the WAIS-R.
Are there step down items on the WAIS-III?
Several step-down items have been added on each subtest for lower functioning individuals. However, like the WAIS-R, individuals who are extremely gifted or severely retarded cannot be adequately assessed with the WAIS-III because the range of possible Full Scale IQ scores is only 45–150.
When did the third edition of the WAIS come out?
Introduction to the WAIS III. Richard Niolon, Ph.D. This is the third edition of the WAIS, with the first edition coming out in 1955, and the revised (WAIS-R) coming out in 1981. Before the WAIS, however, there was the Wechsler Bellevue test (released in the 1930s and revised in the 1940s).
What is the correlation between WAIS and IQ?
Similarly, the WAIS-III is also highly correlated and consistent with the WAIS-R. The correlation coefficients between the WAIS-III and WAIS-R IQ scores are .94, .86, and .93 for VIQ, PIQ, and FSIQ, respectively. The mean WAIS-III scores are about 1.2, 4.8, and 2.9 points lower than the corresponding WAIS-R VIQ, PIQ, and FSIQ scores, respectively.