Goode spent countless hours observing, teaching, and playing with Christina, who had been institutionalized since age six, and Bianca, who remained in the care of her parents. He also observed the girls' parents, school, and medical environments, exploring the unique communication practices—sometimes so subtle they are imperceptible to outsiders—that family and health care workers create to facilitate innumerable every day situations. A World Without Words presents moving and convincing evidence that human beings both with and without formal language can understand and communicate with each other in many ways.
Through various experiments in such unconventional forms of communication as playing guitar, mimicking, and body movements like jumping, swinging, and rocking, Goode established an understanding of these children on their own terms. He discovered a spectrum of non-formal language through which these children create their own set of symbols within their own reality, and accommodate and maximize the sensory resources they do have. Ultimately, he suggests, it is impractical to attempt to interpret these children's behaviors using ideas about normal behavior of the hearing and seeing world.