Quizlet digit span test5/2/2023 ![]() Scores for this test are determined based on statistical values such as the mean (the average) and standard deviation (a calculation that determines a significant distance of a score from the average). Wechsler Intelligence Scale for Children Scoring Explained Normal distribution means that most people fall within the average range and less people perform at a range that is above or below average. This test relies on the idea that cognitive skills, or intelligence, are normally distributed throughout the population. Therefore, raw scores of each subtest are calculated and then compared to the normative sample with children of the same age. Age has the most significant effect on how a child performs on a certain task. The developers of this intelligence test recognize that a child’s performance must be compared to individuals similar to them, and each version of the WISC uses normative samples to compare a child’s score to. Learning disabilities can be identified by comparing results from an intelligence test like the WISC with the scores from an achievement test like the Wechsler Individual Achievement Test to identify gaps between academic achievement and a child’s level of intellectual functioning. The WISC is often used among a battery of other tests to assess and identify cognitive function and ability ranges which can help identify giftedness, learning disabilities, or general strengths and weaknesses a child may have in their cognitive abilities. Though this test can be used as an IQ test for children, it is most often used as a clinical tool to measure individual cognitive abilities. The test has undergone several updates and the current version of the test is the fifth edition WISC-V which was released in 2014. This version of the Wechsler test is a psychological assessment that measures different aspects of intelligence and is designed for children between the ages of 6 to 16. While all three indices have utility as embedded PVTs, ACSS ≤ 5 may be most robust to cognitive impairment while identifying noncredible performance.Īssessment elderly/geriatrics/aging malingering/symptom validity testing.The Wechsler Intelligence Scale for Children (WISC) has been around since 1949 as an adaptation of David Wechsler’s 1939 Wechsler-Bellevue Intelligence Scale. 39/.86).ĪCSS yielded better classification accuracy and sensitivity/specificity than RDS and RDS-R. 62/.95), and cognitively impaired subsample (≤4. 62/.87), cognitively unimpaired subsample (≤5. ACSS evidenced maximal sensitivity/specificity for the total sample (≤5. ![]() Lower accuracy and AUCs were observed for the valid-cognitively impaired subsample across indices, but to a greater degree for traditional RDS. 85, and optimal cut scores of RDS ≤ 5, RDS-R ≤ 9, and ACSS ≤ 5. RDS, RDS-R, and ACSS all significantly predicted validity group membership with respective areas under the curve (AUCs) of. Among valid participants, 49% were cognitively impaired. Those with ≤1 criterion PVT failure were classified as valid (n = 87), whereas those with ≥2 failures were classified as noncredible (n = 26). This study compared the classification accuracy of RDS, RDS-R, and ACSS in a mixed clinical sample of relatively older (M age = 54.61) veterans with and without neurocognitive impairment.ĭuring a comprehensive neuropsychological evaluation, 113 clinically-referred veterans completed the WAIS-IV Digit Span subtest and the following criterion PVTs: Dot Counting Test, Word Choice Test, and Test of Memory Malingering. Wechsler Adult Intelligence Scale-Fourth Edition (WAIS-IV) Reliable Digit Span (RDS), RDS-revised (RDS-R), and age-corrected scaled score (ACSS) are validated and commonly used embedded performance validity tests (PVTs), though existing validation studies have largely examined younger (approximate ages 19-35) patients with mild traumatic brain injury or those without cognitive impairment. ![]()
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