This unit builds on the structural topics of LING101. Using examples from English and other languages, it continues exploration of the basic structural features of language, focussing on phonetics and on techniques of phonemic analysis. It also looks at first and second language acquisition, and at how multilingual speakers switch between languages. The unit also examines how language is comprehended and processed in the human brain, and explores how and why languages change over time. Finally it considers the history of writing and how diverse types of writing system are organised. There is an emphasis on problem-solving and data analysis. Web access is essential.