The articles in this paper explore the status and progress of studies on the nature of speech, instrumentation for its investigation, and practical research applications. Titles of the papers and their authors are as follows: (1) "Task Dynamic Coordination of the Speech Articulators: A Preliminary Model" (Elliot Saltzman); (2) "Some Observations on the Development of Anticipatory Coarticulation" (Bruno H. Repp); (3) "The Role of Production Variability in Normal and Deviant Developing Speech" (Katherine S. Harris, Judith Rubin-Spitz, and Nancy S. McGarr); (4) "Can Linguistic Boundaries Change the Effectiveness of Silence as a Phonetic Cue?" (Bruno H. Repp); (5) "Perception of the (m)-(n) Distinction in CV Syllables" (Bruno H. Repp); (6) "On the Nature of Melody-Text Integration in Memory for Songs" (Mary Louise Serafine, Janet Davidson, Robert G. Crowder, and Bruno H. Repp) (7) "Some Developments in Research on Language Behavior" (Michael Studdert-Kennedy); (8) "The Pursuit of Invariance in Speech Signals" (Leigh Lisker); (9) "How Is the Aspiration of English /p,t,k/ 'Predictable'?" (Leigh Lisker); (10) "Developmental Phonology: Is the Child Father to the Man?" (Catherine T. Best); (11) "Phonology and the Problems of Learning to Read and Write" (Isabelle Y. Liberman and Donald Shankweiler); (12) "Phonological Deficiencies in Children with Reading Disability: Evidence from an Object-Naming Task" (Robert B. Katz); (13) "Access to Spoken Language and the Acquisition of Orthographic Structure: Evidence from Deaf Readers" (Vicki L. Hanson); (14) "Cooperative Phenomena in Biological Motion" (J.A.S. Kelso and J.P. Scholz); (15) "Naturalizing the Context for Interpreting SMA Function" (John P. Scholz, M.T. Turvey, and J.A.S. Kelso); and (16) "Information and Control: A Macroscopic Analysis of Perception-Action Coupling" (J.A.S. Kelso and B.A. Kay). Citation information for each article is included, and a list of ERIC and DTIC numbers is appended. (HOD)