The Intercultural Development Inventory (IDI) applies across a wide-range of cultures. It has been validated with over 218,000 individuals to provide a powerful and accurate profile of respondents’ orientations toward a wide range of culture groups, including nationality, ethnicity, gender and other diversity categories. It has been psychometrically tested and found to possess strong validity and reliability across diverse cultural groups. The IDI has been rigorously tested and has cross-cultural generalizability across both international and domestic diversity.
Read more about the development of the IDI and validation studies here: https://www.idiinventory.com/validation