Copyright © American Speech-Language-Hearing Association From: A Clinical Tool for Evaluating the Familial Basis of Speech and Language Disorders Am J Speech Lang Pathol. 1993;2(2):38-43. doi:10.1044/1058-0360.0202.38 Legend: Example pedigree of a child with a speech and language disorder. Arrow indicates target child or proband. Blackened circles or squares = speech/language disorder; R for reading problems, SP for spelling problems, ST for stuttering, and LD for learning disability. Date of download: 10/22/2017 Copyright © American Speech-Language-Hearing Association