Assessments for AD/HD typically include 2 to 4 hours of formal testing, as well as parent/teacher questionnaires and interviews. Your doctor may request such an evaluation if the diagnosis of AD/HD is unclear from his/her medical examination, or an assessment may be required in order to determine whether educational accommodations are warranted.
For learning disabilities, more testing is often required (typically 6 to 8 hours) in order to delineate strengths and weaknesses in the areas of phonemic awareness, orthographic awareness, academic fluency, language, memory, and problem solving. A LD assessment is often requested when a client’s learning abilities are not clear from the results of a school-based assessment, parents seek a comprehensive, outside-of-school evaluation, or a client's need for educational accommodations requires documentation.
Assessment of other neuropsychological and neurobehavioral disorders (traumatic brain injury, autism spectrum disorders, medical/genetic disorders, dementia), Independent Education Evaluations for school districts, and forensic neuropsychological evaluations are usually referred to an outside provider(s).