Contents: Preface. J. Archibald, Introduction: Phonological Competence. B.E. Dresher, H. van der Hulst, Global Determinacy and Learnability in Phonology. K. Rice, P. Avery, Variability in a Deterministic Model of Language Acquisition: A Theory of Segmental Elaboration. E.J. Fee, Segments and Syllables in Early Language Acquisition. D. Ingram, The Acquisition of Negative Constraints, the OCP and Underspecified Representations. J. Archibald, The Acquisition of Stress. K. Demuth, The Acquisition of Tonal Systems. D.A. Dinnsen, S.B. Chin, On the Naural Domain of Phonological Disorders. E. Broselow, H-B. Park, Mora Conservation in Second Language Prosody. T. Scovel, Differentiation, Recognition and Identification in the Discrimination of Foreign Accents.