I have 40 years of experience, and specialize in the field of linguistics with specific knowledge in the areas of English grammar, language policy and language interpreting. I have published on such topics as grammatical theory, English grammar and interpreter training. I have testified on language proficiency of defendant, linguistic properties of trademarks. My professional interests have evolved from a solid grounding and research experience in theoretical linguistics to a range of real-world applications of linguistics including interpreting and translation, governmental language policies, and linguistic issues in refugee resettlement and language rights.