![]() Are these as reliable as the WAIS–III VIQ and PIQ were? The VCI and the PRI are derived from three subtests. The WAIS–III subtests used to derive the FSIQ included only one subtest from the Processing Speed scale and one additional subtest each from the Verbal Comprehension and Perceptual Organization scales. The WAIS–IV FSIQ is composed of all 10 subtests that comprise the four index scores, including the Working Memory and Processing Speed subtests. How is the WAIS–IV FSIQ different than the WAIS–III FSIQ?Ĭompared to the WAIS–III, the WAIS–IV FSIQ de-emphasizes crystallized knowledge (Comprehension is supplemental), and emphasizes the contribution of Processing Speed (both Coding and Symbol Search are core). Select a question below to see the response. You may also call Customer Support at 1-80. If you want to add the WAIS-IV to your account, visit our online order form and select the "Add test(s) to existing account" option. See the Q-interactive pricing tab for more information on license options. How Can I Buy WAIS-IV on Q-interactive? New customers:Īnnual Q-interactive licenses can be purchased using our online order form or by calling Customer Support at 1-80.
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