List of Contributors PrefaceFigure, Table, and Quotation Credits Contents of Previous Volumes1 The Evolution of Human Communication Systems Introduction Evolution of Communicative and Other Complex Behaviors Evolution of the Primate Vocal Tract and Ear Evolution of the Brain (Central Control anil Processing Systems) Ontogeny, Phylogeny, and Vocal Learning Conclusions Appendix: Comparison of Various Communication Systems in Birds, Pongids, and Humans in Terms of Hockett's Designn Features References 2 The Neural Control of Eye Movements in Acquired and Developmental Reading Disorders Introduction Disorders of the Saccadic Eye Movement System Acquired Dyslexia Developmental Dyslexia Discussion Summary References 3 Structure in a Manual Communication System Developed Without a Conventional Language Model: Language Without a Helping Hand The Role of Linguistic Input in Language Development Method Theoretical Basis o f the Analysis and Derivation of Coding Categories Categorizations of Relational Meanings Structure in the Deaf Child's Representation of Semantic Relations Discussion Summary and Conclusions Appendix A: Number of Phrases Produced by Each Child Classified According to Length Appendix Bl: David's Action Phrases Produced during Sessions I-VIII Appendix B2: Characterizing Signs in David's Action Phrases Produced during Sessions I—VIII Appendix CI: Donald's Action Phrases Produced during Sessions I-XI Appendix C2: Characterizing Signs in Donald's Action Phrases Produced during Sessions I-XI Appendix Dl: Kathy's Action Phrases Produced during Sessions I-IX Appendix D2: Characterizing Signs in Kathy's Action Phrases Produced during Sessions I-IX Appendix El: Chris's Action Phrases Produced during Sessions I—III Appendix E2: Characterizing Signs in Chris's Action Phrases Produced during Sessions I—III Appendix Fl: Dennis's Action Phrases Produced during Sessions I-IV Appendix F2: Characterizing Signs in Dennis's Action Phrases Produced during Sessions I-IV Appendix Gl: Tracy's Action Phrases Produced during Sessions I—II Appendix G2: Characterizing Signs in Tracy's Action Phrases Produced during Sessions I—II References4 Aphasie Dissolution and Language Acquisition The Regression Hypothesis The Phonological System Inflectional Systems Naming and Word Retrieval Production and Comprehension of Complex Utterances Status of the Regression Hypothesis References 5 VOT Distinctions in Infants: Learned or Innate? High Amplitude Sucking Heart Rate Habituation Auditory Evoked Response Experiment 1 Experiment 2 Discussion References 6 Disruption of Written Language in Aphasia The Assessment and Development of Written Language Types of Writing Disruption Analysis of Aphasie Writing Spontaneous Writing of a Single Aphasie Conclusions References7 Linguistic Aspects of Lexical Retrieval Disturbances in the Posterior Fluent Aphasias The Meaning of "Use" Coding Lexical Items Types of Retrieval Disturbances References 8 Neurologic Correlates of Anomia Definitions Examination for Anomia Varieties of Anomic Aphasia Varieties of Word-Finding Disturbance Discussion of Clinical Cases Theoretical Considerations References 9 On Linguistic Perseveration Introduction The Cases Studied Units Subject to Perseveration Perseveration in Spontaneous Speech Theories Explaining Perseveration References Subject Index