WAIS-IV
Wechsler Adult Intelligence Scale - Fourth Edition (WAIS-IV)
The Wechsler Adult Intelligence Scale - Fourth Edition (WAIS-IV, Pearson Assessments, 2012) was designed to evaluate cognitive functioning in adults aged 16 to 90. The WAIS-IV is the most recent updated version (released in 2008) of the most commonly administered intelligence test for adolescents and adults (Canivez, 2010). The test has its roots in the Wechsler -- Bellevue Intelligence Scale (Wechsler, 1939). David Wechsler, a psychologist who was dissatisfied with the standard of intelligence testing of the times, based his original tests on his notion of intelligence as "the global capacity of an individual to act purposefully, think rationally, and deal effectively with the environment" (Wechsler, 1939, p. 229). All versions of the WAIS attempt to measure general intelligence and other facets of intelligence via the administration of numerous subtests. Each of these subtests is an estimate of a particular cognitive ability that is an indicator of a particular facet of intelligence (Canivez, 2010).
The WAIS-IV has six major IQ indices that include a Verbal Comprehension Index (a measure of verbally-mediated intelligence), Perceptual Reasoning Index (a measure of non- -- verbally -- mediated intelligence), a Processing Speed Index (a measure of how quickly a person can complete automatic tasks), a Full Scale Index (and overall IQ score), and a General Ability Index (an optional index that provides an estimate of general IQ without the contribution of working memory and processing speed; Whiston, 2012). These general indices are calculated from the scores of 10-15 subtests that contribute to the overall score on the particular ability (Canivez, 2010).
The tests require specific expertise to administer. For instance Pearson Assessments, the manufacturer of the WAIS-IV, will only allow individuals with doctorate degrees in psychology, education or related...
E. between 85 and 115) on a normal bell-shaped distribution. An abbreviated four-subtest version of the WAIS-III (called the Wechsler Abbreviated Scale of Intelligence (WASI)) has been released enabling clinicians to perform a validated verbal, performance and full-scale IQ in approximately 30 minutes. Some clinicians use the WAIS with psychiatric illness or brain injury in order to assess impediments in cognitive reasoning, but use of the WAIS in this connection is controversial.
Explain the Global Ability Index and when to use it The alternative global score, the General Ability Index (GAI) is calculated when the test-taker "meets certain criteria that involve variability with respect to the cognitive factors of working memory and processing speed" (Cheramie 2008). For example, learning-disabled children often have lower levels of processing speed, thus the GAI is an acceptable scoring alternative to the usual method which does take memory
" The subsets include "Memory for Block Designs," studying a printed design that is briefly exposed, then constructing the design using six cubes and a formboard. It can also serves as an alternate subtest for the Core Battery Fluid Scale. "Famous Faces" involves "naming people of current or historical fame, based on their photographs and a verbal clue and also serves as an alternate subtest for the Core Battery Crystallized
Vocational Assessments Critiques Stanford-Binet Intelligence Scales, Fifth Edition (SB5) The Stanford-Binet is an individually administered test of intelligence and cognitive abilities for people between the ages of two to 85 years. The SB5 is normed on a stratified random sample of 4,800 people who categorically match the year 2000 United States Census, and the scores have been found to approximate a normal distribution. The SB5 measures the following five factors of cognitive
Gender: Female Birthdate: 01/16/1985 Age: 30 years, 11 months Dates of Evaluation: 10/25/15 -10/30/2015 Reason for Referral This is a 30-year-old right-handed woman referred by Dr. Smith for a psychological evaluation to determine any lingering psychological and cognitive effects as a result of a mild head injury that she suffered on October 15, 2015 as a result of an automobile accident. The client has complained of severe memory problems, being disoriented at times, feeling
PSYCHOLOGY AND TESTING Psychology and Testing: Measurements and AssessmentsTest and Assessment Development Analysis: Test OneWAIS-IVThe value 102 for FSIQ is 102. FSIQ signifies the full-scale IQ level of the patient, which is average for the selected patient. It is said that 130 and above is considered superior FSIQ, while 90 to 109 is average (Washington Center for Cognitive Therapy, n.d.). The value below 69 for FSIQ is claimed as intellectually
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