What Is the Relationship Between the Psychological and Economic Consequences of Linguistic Diversity?

In his review of the book How Many Languages Do We Need? The Economics of Linguistic Diversity by Victor Ginsburgh and Shlomo Weber, Harry Whitaker notes that,

Although this book focuses on economic outcomes, Ginsburgh and Weber do take economic theory to a personal level in the discussion of the costs of learning a second (or third) language.

However, the discussion does not include the psychological advantages (or disadvantages, if any) of having a linguistically diverse society or of individuals learning a second or third (or more) language. What are the psychological (e.g., cognitive, affective, personality, behavioral) advantages and disadvantages to living in a linguistically diverse society? What are the psychological advantages and disadvantages for individuals who learn additional languages? How are these related to the economic advantages and disadvantages?

Read the Review

The Perils of Polyglottism
By Harry A. Whitaker
      PsycCRITIQUES, 2012 Vol 57(1)