People often experience difficulties when they first hear a novel accent. Prior research has shown that relatively fast natural accent accommodation can occur. However, there has been little investigation of the underlying perceptual mechanism that drives the learning. The current study examines whether phonemic boundary changes play a central…

Multiple acoustic dimensions signal speech categories. However, dimensions vary in their informativeness; some are more diagnostic of category membership than others. Speech categorization reflects these dimensional regularities such that diagnostic dimensions carry more "perceptual weight" and more effectively signal category membership…

This study examines whether pronunciation instruction can improve listening comprehension in a second language. At the most basic level, listening comprehension involves the perception of individual sounds and sound contrasts, a process that is known to be related to production, or pronunciation, within the L2 phonological system. As improving…

In this dissertation we examine the effects of pronunciation instruction on the perception of a novel L2 contrast. The novel contrast in this case is the glottal fricative which results in Spanish from the suppression buccal gestures of /s/ in the word-medial coda position. This process which occurs in Spanish, but not English is known as…