Purpose: The change/no-change procedure (J. E. Sussman & A. E. Carney, 1989), which assesses speech discrimination, has been used under the assumption that the number of stimulus presentations does not influence performance. Motivated by the tenets of the multiple looks hypothesis (N. F. Viemeister & G. H. Wakefield, 1991), work by R. F. Holt and…

One of a regular series on the status and progress of studies on the nature of speech, instrumentation for its investigation, and practical applications, this report covers the period of January 1-June 30, 1984. The 14 studies summarized in the report deal with the following topics: (1) sources of variability in early speech development, (2)…

Research reports on the nature of speech, instrumentation for the investigation of speech, and practical applications of speech research are presented in this status report. The 18 reports deal with a variety of topics, including the following: (1) cyclic production of vowels in sequences of monosyllabic stress feet; (2) differences between…