Hispanic psychology has its roots in ethnic psychology and in cross-cultural psychology. The basic premise is that it is a valuable enterprise both theoretically and empirically to study the behavior of Hispanics. Over the past 25 years, research in Hispanic psychology has given way to a new scholarship or paradigm that calls for the recognition of intragroup variation which values within-group comparisons rather than relying exclusively on between-group effects. Acculturation and biculturalism have taken on special significance in Hispanic psychology. Further, Hispanic psychology must also consider the effects of racism and oppression on people and how these affect ethnic identity, attitudes toward the dominant group, and intergroup relations.