The term 'children with specific learning disabilities' means those children who have a disorder in one or more of the basic psychological processes involved in understanding or in using language, spoken or written, which disorder may manifest itself in imperfect ability to listen, think, speak, read, write, spell, or do mathematical calculations. Such disorders include such conditions as perceptual disabilities, brain injury, minimal brain dysfunction, dyslexia, and developmental aphasia. Such term does not include children who have learning problems which are primarily the result of visual, hearing, or motor disabilities, of mental retardation, of emotional disturbance, or of environmental, cultural, or economic disadvantage. 20 U.S.C. Secs 1401(a)(1), (15). So, a child with a specific learning disability caused by any number of factors will qualify for assistance, while a child with a specific learning disability which is 'primarily the result of [non-'serious'] emotional disturbance' will not. 20 U.S.C. Sec 1401(a)(15); 34 C.F.R. Sec 300.7(a)(10).