Two theories on the test bench: Internal and external validity of the theories of Ronald Inglehart and Shalom Schwartz

► Comprehensive empirical assessment of Schwartz' and Inglehart's micro-level theories. ► Schwartz - Pro: Elaborated measurement model, acceptable internal validity in SEM. ► Contra: studies use different measurement models; (only) moderate external validity. ► Inglehart - Pro: Elaborated relationships with external variables. ► Contra: Low internal validity; the predictive power is sometimes overestimated.