Researchers and teachers of education and language from all the Americas suggest how Russian psychologist L.S. Vygotsky's sociocultural theory can be applied to teaching a second or foreign language to adults. Most of the 13 studies report on classroom based studies where the principles were implemented in courses as long as a semester, teaching English, French, or Spanish in North America. Distributed in North America by The David Brown Book Company. Annotation ©2008 Book News, Inc., Portland, OR (booknews.com)