The author used part of his sabbatical to write a much cited paper on bilingualism. In it he presented his “the bilingual is not two monolinguals in one person” view. He first argued how a monolingual view of bilingualism had impacted every aspect of bilingualism research up until then. He then described his holistic view and presented a number of concepts that accompany it such as language mode, the Complementarity Principle, language restructuring in bilinguals, etc. Another paper he worked on was on the bicultural person whom he depicted for the first time. He presented how behavior changes in a monocultural and a bicultural mode, and how biculturals come to grips with their identity.
Principle of Complementarity in the Research of the Links between Language, World View and Picture of the World