Transporation Canada Psychological and NeuroPsychological Assessment In case that current presence of neurological disorder, such as multiple sclerosis (MS) and attention-deficit/hyperactivity disorder (ADHD), or use of psychostimulans caused disqualification for aviation medical certification, your application for certification may be reconsidered if significant symptoms are not experienced or after successfully discontinuing medication and a demonstrated period of stability. In order to progress your aeromedical assessment, among other requirements, objective testing results are often required. Here at ARCH Psychological Services, we are able to provide psychological and neuropsychological assessments for that purpose. For more information, please contact our Intake department.