What term refers to the belief that one's own society's products or ideas are inferior to those from elsewhere?

The belief that one's own society's products or ideas are inferior to those from elsewhere is defined as xenocentrism. This concept involves a preference for the goods, ideas, or practices of other cultures over one’s own, leading individuals or groups to perceive external societies as superior.

In contrast, ethnocentrism refers to the belief that one's own culture is superior to others, promoting a sense of pride or superiority in one’s cultural norms and practices. Nationalism relates to a strong identification with one's own nation and often emphasizes national interests, sometimes at the expense of other nations. Universalism promotes the idea that certain values or concepts are universal, applicable to all people regardless of culture.

Xenocentrism, therefore, specifically addresses the notion of inferiority regarding one’s own culture in comparison to others, making it the correct choice in this context.