Background: Previous studies on language production in normal ageing have primarily focused on distinct dimensions of older adults' spoken language performance, such as fluency and complexity. However, little attention has been paid to the complex, interconnected relations between these dimensions. Additionally, older adults have been treated as a…

One of a series of quarterly reports, this publication contains 14 articles which report the status and progress of studies on the nature of speech, instruments for its investigation, and practical applications. Articles in the publication are: "Some Assumptions about Speech and How They Changed" (Alvin M. Liberman); "On the…

This paper reports on a study in which twenty young adults were tested for their ability to accurately reproduce the articulatory and prosodic features of three non-Indo-European languages in which they had received instruction. The first of two basic goals of this research was to test, at the purely phonetic level, the "critical period for…