For the purposes of not underestimating the cognitive abilities of adults living with a several intellectual disabilities, we developed a cognitive evaluation tool adapted to these individuals. Within this framework, we will first present our test series: the ID Test Series (ID for Intellectual Disabilities) for cognitive evaluation. Second, we will present the analyses (N=80) which enabled us to conclude that our test series did not minimize their cognitive abilities, but much to the contrary brought out their resources. All this with a goal to help these individuals use their resources in their environment and facilitate their daily life.