Includes bibliographies and index.

Contributors // Preface // Introduction // Genetic aspects of speech and language disorders : current status and future diections // Genetics : fate, chance and environmental control // Defining the pheontype // Behavioral attributes of speech and language disorders // Physiological specification of the phenotype in genetic language disorders : Prospects for the use of indicators of localized brain metabolism // Definitions of the anatomical phenotype // Sex differences : clues or myths on genetic aspects of speech and language disorders // Investigation of genetype : methodology and research designs // Twin studies and the etiology of complex neurological disorders // Adoption designs for the study of complex behavioral characters // Genetic analysis of family pedigree data : A review of methodology // Genetic components of communicative impairments // Linkage analysis of communication disorders // dyslexia family studies // A genetic analysis of specific reading disability // sex chromosome abnormalities and the development of verbal and non verbal abillities // Recent progress on the genetics of stuttering // Glossary // Subject Index //