I have 25 years of experience, and specialize in the field of linguistics with specific knowledge in the areas of educational testing, forensic linguistics and methods of reasoning and argumentation. I have published on such topics as sociolinguistics, fairness in testing and test development principles. I have testified on defamation and copyright infringement. I have a wide background of knowledge, including frequent international travel and competence in English, French, Spanish, and Mandarin Chinese.