The slang meaning of "turf refers to the neighborhood or territory over which a street gang asserts its authority. Protecting that turf, or "turf guarding" in the vernacular, is a behavior found in many animals, from reptiles to man. As it appears that the relatively new field of learning disabilities is carved out of turf that has supposedly belonged to others, all involved with the LD population are vying to protect their territory. Laurence Lieberman (1980), for example, has described the turf guarding issues that prevail between speech and language therapists, optometrists, and/or reading specialists on the one hand and professionals in the field of learning disabilities on the other.