Table 1.3 provides brief descriptions of the WJ IV COG tests.Ĭognitive Composites: General Intellectual Ability, Brief Intellectual Ability, and Gf– GcĬHC Factors: Comprehension-Knowledge ( Gc), Comprehension-Knowledge Extended ( Gc-Ext includes Test 1: Picture Vocabulary from the WJ IV OL), Fluid Reasoning ( Gf), Short-Term Working Memory ( Gwm), Cognitive Processing Speed ( Gs), Auditory Processing ( Ga), Long-Term Retrieval ( Glr), and Visual Processing ( Gv) In order to create an extended Gc cluster, the examiner must administer Test 1: Picture Vocabulary from the WJ IV OL. For example, in order to create an extended Gf cluster the examiner must administer Test 15: Analysis-Synthesis. Additional tests are required to create an extended version of some of the CHC factors and one clinical cluster listed in Table 1.2. Most CHC factors and clinical clusters are composed of two tests. The CHC factors, narrow ability clusters, and other clinical clusters provide the primary interpretative information for examiners to identify an individual’s strengths and weaknesses.
Table 1.2 lists the WJ IV COG tests that compose the standard and extended batteries as well as the cognitive composites, CHC factors, and narrow ability and other clinical clusters that can be derived from each battery. The WJ IV offers the flexibility for examiners to use the Standard Battery alone or in conjunction with the Extended Battery. The WJ IV COG tests are included in two batteries: the Standard Battery (Tests 1–10) and the Extended Battery (Tests 11–18) ( Mather & Wendling, 2014b).