Contents: Preface. H.L. Roitblat, H.E. Harley, D.A. Helweg, Cognitive Processing in Artificial Language Research. G. Bradshaw, Beyond Animal Language. S.A. Kuczaj II, V.M. Kirkpatrick, Similarities and Differences in Human and Animal Language Research: Toward a Comparative Psychology of Language. W. Bechtel, Knowing How to Use Language: Developing a Rapprochement Between Two Theoretical Traditions. E. Hunt, A Proposal for Computer Modeling of Animal Linguistic Comprehension. L. Bloom, Language Acquisition and the Power of Expression. P.L. Tyack, Animal Language Research Needs a Broader Comparative and Evolutionary Framework. J. Sigurdson, Frequency-Modulated Whistles as a Medium for Communication with the Bottlenose Dolphin (Tursiops truncatus). C.T. Snowdon, Linguistic Phenomena in the Natural Communication of Animals. R.M. Seyfarth, D.L. Cheney, Meaning, Reference, and Intentionality in the Natural Vocalizations of Monkeys. I.M. Pepperberg, Cognition and Communication in an African Grey Parrot (Psittacus erithacus): Studies on a Nonhuman, Nonprimate, Nonmammalian Subject. R.J. Schusterman, R. Gisiner, B.K. Grimm, E.B. Hanggi, Behavior Control by Exclusion and Attempts at Establishing Semanticity in Marine Mammals Using Match-to-Sample Paradigms. K.N. O'Conner, H.L. Roitblat, T.G. Bever, Auditory Sequence Complexity and Hemispheric Asymmetry of Function in Rats. W.D. Hopkins, R.D. Morris, Hemispheric Priming as a Technique in the Study of Lateralized Cognitive Processes in Chimpanzees: Some Recent Findings. P. Morrel-Samuels, L.M. Herman, Cognitive Factors Affecting Comprehension of Gesture Language Signs: A Brief Comparison of Dolphins and Humans. D.M. Rumbaugh, W. Hopkins, D.A. Washburn, E.S. Savage-Rumbaugh, Chimpanzee Competence for Comprehension in a Video-Formated Task Situation. S. Itakura, T. Matsuzawa, Acquisition of Personal Pronouns by a Chimpanzee. R.K.R. Thompson, D.L. Oden, "Language Training" and Its Role in the Expression of Tacit Propositional Knowledge by Chimpanzees (Pan troglodytes). M.R. Shyan, A.A. Wright, The Effects of Language on Information Processing and Abstract Concept Learning in Dolphins, Monkeys, and Humans. L.M. Herman, A.A. Pack, P. Morrel-Samuels, Representational and Conceptual Skills of Dolphins. M.D. Holder, L.M. Herman, S. Kuczaj II, A Bottlenosed Dolphin's Responses to Anomalous Sequences Expressed Within an Artificial Gestural Language. E.S. Savage-Rumbaugh, Language Learnability in Man, Ape, and Dolphin.