One of a regular series on the status and progress of studies on the nature of speech, instrumentation for its investigation, and practical research applications, this report consists of 14 papers. Topics covered in the papers are (1) skilled actions, (2) the control of fundamental frequency declination, (3) selective effects of masking on speech and nonspeech in the duplex perception paradigm, (4) the perception of vowels in consonantal content and in isolation, (5) the relation between children's perceptions of articulation and perceptual adjustment of coarticulary effects, (6) trading relations among acoustic cues in speech perception, (7) the role of release bursts in the perception of (s) stop clusters, (8) changes in spoken Welsh, (9) single format contrast in vowel identification, (10) integration of melody and text in memory for songs, (11) the equation of information and meaning from the perspectives of situation semantics and J. J. Gibson's ecological realism, (12) the equating of information with symbol strings, (13) perception and action, and (14) mapping speech. (FL)