When acquiring a second language, learners must become able to perceive the difference between novel sounds ("discrimination") and also associate strings of sounds with distinct vocabulary items ("lexical encoding"). Recent research has questioned whether discrimination is a sufficient or necessary condition for encoding, and…

Upon acquiring or learning another language, cross-linguistic influence (CLI) is an inevitable phenomenon with which a bilingual speaker lives. One key aspect of CLI is its bidirectionality, flowing between both the first (L1) and second languages (L2) mutually affecting each other. However, investigations of L1 CLI on L2 have dominated previous…

The present dissertation analyzed speech production and perception in early heritage Spanish-English bilingual children. Specifically, I investigated how perception and production of lexical stress develops in bilingual children. Current models of second language (L2) speech perception do not include heritage bilinguals or suprasegmental aspects…

This dissertation research examines the acquisition of second language vowels. For second language learners, learning a new languages' sound inventory, particularly its vowels, presents a challenge perceptually and in terms of production. Incorrectly perceiving and producing sounds in a second language results in a foreign accent in many adult…

The acquisition of a sound system is an integral component of second language (L2) communication, yet it is one of the most difficult skills to teach and is therefore largely ignored in L2 classrooms (Derwing, 2010). In laboratory settings, phonetic training studies have typically examined syllables, rather than words, with no referential meaning.…

Some contrasts in the second language (L2) impose difficulty in processing for learners, especially when these contrasts are not used phonemically in a learner's first language (L1). This thesis is to examine how American English speakers learning Japanese discriminate and store information regarding the L2 contrasts as a part of their lexicon…

The present study investigated first language (L1) and second language (L2) Chinese categorization of tones and segments and use of tones and segments in lexical access. Previous research has shown that English listeners rely more on pitch height than pitch direction when perceiving lexical tones; however, it remains unclear if this superior use…

In order to acquire some aspects of grammar, such as wh-questions and verb tense agreement, children must be able to learn nonadjacent dependencies. This type of learning has been demonstrated in both children and adults, but is reported to be difficult. The current study investigated whether children with autism (ASD) would show a similar pattern…

This experiment measured teachers' attitudes towards African American English and Academic English. Participants were graduate students of Education at a college in New York City. They completed a paper-and-pencil questionnaire that assessed their explicit attitudes towards the two varieties, as well as a Psycholinguistic Experiment that was…

Traditional pronunciation instruction and instruction in second language (L2) phonetics have been shown to improve learners' L2 accent in some, though certainly not all, cases. Learners in intermediate and advanced Spanish FL courses have shown modest improvement in the pronunciation of some L2 phones after receiving such instruction.…

The purpose of this study was to examine the perception of vowels by speakers of English and Malayalam, native language of the state of Kerala, India. Three groups of subjects participated in the study, native speakers of English (L1E), native speakers of Malayalam (L1M) and native speakers of Malayalam who learnt English as a second language…