First published in 1987. Routledge is an imprint of Taylor & Francis, an informa company.

Dominic William Massaro, Program in Experimental Psychology University of California, Santa Cruz.

1. Scientific Framework for Psychological Inquiry, 2. Single versus Multiple Sources of Speech Information: The Contribution of Visible Speech, 3. Integration versus Nonintegration of Auditory and Visual Information in Speech Perception, 4. Categorical versus Continuous Information in Speech Perception: The Relationship between Identification and Discrimination, 5. Categorical versus Continuous Information in Speech Perception: Model Tests and Ratings, 6. Independent versus Dependent Evaluation of Sources, 7. Additive, Minimization, or Multiplicative Integration, 8. Lifespan Changes in Speech Perception by Ear and Eye, 9. Specificity versus Generality of the Findings, References, Author Index, Subject Index