The Wechsler Preschool and Primary Scale of Intelligence-Fourth Edition: Canadian (WPPSI-IVCDN; Wechsler, 2012), published by NCS Pearson, is a newly updated, individually administered measure of cognitive intelligence for children aged 2:6 through 7:7. Suitable for educational, clinical, and research settings, the purposes of the WPPSI-IVCDN are to provide normative information on children's intellectual functioning, including cognitive strengths and weaknesses, support special education eligibility and/or placement decisions, and aid in intervention development. Classified as a Level C measure, it can be administered and interpreted by certified psychologists or professionals from related fields with formal training in standardized psychological or educational testing. Administration time for the core subtests is 30 to 45 minutes for ages 2:6 to 3:11 and 45 to 60 minutes for ages 4:0 to 7:7.