Joseph Casillas was born in Phoenix, Arizona. He received his PhD in Hispanic Linguistics from the University of Arizona. He is currently an Assistant Professor of Spanish Linguistics in the Department of Spanish and Portuguese at Rutgers University, New Brunswick. His main interests are in phonetics, laboratory phonology, and second language acquisition. A principle aim of his research is to better understand the relationship between language use and sound representation in the mind, as well as the structure of sound systems in human languages. Most of his research is conducted on bilinguals of varying proficiency and linguistic experience. Some of his recent projects have focused on native phonetic experience and its influence on L2 speech production, perception and lexical processing.