Specific learning disabilities are neurological disorders that affect one or more basic psychological processes involved in understanding or using spoken or written language. They can manifest as imperfect abilities in listening, thinking, speaking, reading, writing, spelling, or math calculations. The disorders include conditions like dyslexia and affect 2.8 million students in the U.S., making up 47.4% of students receiving special education services. Characteristics of specific learning disabilities include issues with intellectual, academic, reading, writing, arithmetic, behavior, communication, and physical abilities. Teaching strategies focus on addressing perceptual difficulties, maintaining attention, and supporting memory through chunking, rehearsal, elaboration, and categorization.