This encyclopedia investigates the complex mechanisms and social consequences of communication between different social groups. The authors, Howard Giles and Jake Harwood, are established scholars in the field of communication and social psychology, utilizing a comprehensive framework that integrates sociolinguistic, psychological, and sociological perspectives to analyze how group identity influences interpersonal and intergroup interaction.

Experts recognize this work as a foundational reference for scholars and graduate students in the field of communication. Readers frequently note the academic density of the prose and the rigorous synthesis of empirical research across diverse social contexts.