evidence: Our nation’s special education law, the Individuals with Disabilities Education Act (IDEA) defines specific learning disability as… (10) Specific learning disability —(i) General. Specific learning disability means a disorder in one or more of the basic psychological processes involved in understanding or in using language, spoken or written, that may manifest itself in the imperfect ability to listen, think, speak, read, write, spell, or to do mathematical calculations, including conditions such as perceptual disabilities, brain injury, minimal brain dysfunction, dyslexia, and developmental aphasia. [...] Specific learning disorder is a classification of disorders in which a person has difficulty learning in a typical manner within one of several domains. Often referred to as learning disabilities, learning disorders are characterized by inadequate development of specific academic, language, and speech skills. Types of learning disorders include difficulties in reading (dyslexia), mathematics (dyscalculia), and writing (dysgraphia) The diagnosis of specific learning disorder was added to the DSM-5 in 2013. The DSM does not require that a single domain of difficulty (such as reading, mathematics, or written expression) be identified—instead, it is a single diagnosis that describes a collection of potential difficulties with general academic skills, simply including detailed specifiers for the areas of reading, mathematics, and writing. Academic performance must be below average in at least one of these fields, and the symptoms may also interfere with daily life or work. In addition, the learning difficulties cannot be attributed to other sensory, motor, developmental, or neurological disorders.