“…The WAIS-IV takes into consideration current concepts of fluid reasoning, WM, and PS from the Cattell–Horn–Carroll model and contains 15 subtests, five of which are supplemental (Bowden, Saklofske, & Weiss, 2011a; Kaufman, Salthouse, Scheiber, & Chen, 2016). For each subtest, it is assumed that items are administrated in ascending order of difficulty; consequently, the start points, reversal rules, basal rules, and discontinue rules are used to reduce the administration time and estimate participants’ sum scores without having to apply all the test items (Climie & Rostad, 2011; Weiss, Saklofske, Coalson, & Raiford, 2010).…”