University of Wisconsin Milwaukee UWM Digital Commons Theses and Dissertations August 2015 Perception Training of Thai Learners: American English Consonants and Vowels Siriporn Lerdpaisalwong University of Wisconsin-Milwaukee Follow this and additional works at: https://dc.uwm.edu/etd Part of the Linguistics Commons Recommended Citation Lerdpaisalwong, Siriporn, "Perception Training of Thai Learners: American English Consonants and Vowels" (2015). Theses and Dissertations. 1009. https://dc.uwm.edu/etd/1009 This Dissertation is brought to you for free and open access by UWM Digital Commons. It has been accepted for inclusion in Theses and Dissertations by an authorized administrator of UWM Digital Commons. For more information, please contact
[email protected]. PERCEPTION TRAINING OF THAI LEARNERS: AMERICAN ENGLISH CONSONANTS AND VOWELS by Siriporn Lerdpaisalwong A Dissertation Submitted in Partial Fulfillment of the Requirements for the Degree of Doctor of Philosophy in Linguistics at The University of Wisconsin-Milwaukee August 2015 ABTRACT PERCEPTION TRAINING OF THAI LEARNERS: AMERICAN ENGLISH CONSONANTS AND VOWELS by Siriporn Lerdpaisalwong The University of Wisconsin-Milwaukee, 2015 Under the Supervision of Professor Hanyong Park Many studies have revealed that ESL and EFL Thai leaners have difficulty producing and perceiving certain English consonants and vowels. The difficult consonants are /b d g v θ ð z tʃ ɹ l/ (Burkardt, 2005; Francis & McDavid, 1958; Jotikasathira, 1999; Lerdpaisalwong & Park, 2012, 2013; Richards, 1968; Wei & Zhou, 2002). The difficult vowels are /ɪ i ʊ u/ (Richards, 1968; Tsukada, 2009; Varasarin, 2007). Previous studies have showed that laboratory perceptual training using highly variable naturally produced stimuli (HVNP) can improve L2 learners’ perceptions (e.g., Lively, Logan, & Pisoni, 1993).