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

1. Scientific Framework for PsychologicaI Inquiry 2. Single versus Multiple Sources of Speech Information: The Contribution of Visible Speech 3. Integration versus Non integration 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 valuation 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

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