The test titled as Cognitive Ability Test is used to measure the various characteristics of an individual such as memory, reasoning, problem solving, mathematical ability; perception etc. first successful cognitive ability test was conducted by Binet. But the authors of CogAT are Elizabeth and David Lohman (Riversidepublishing.com, 2013). Publisher of the test is Houghton Mifflin Harcourt. Test is designed to measure the quantitative, verbal, non-verbal, and problem solving skills up to grade K-12. In addition to this, test is conducted in a group, and time it required varies according to the level of ...