Final answer:
Ethnocentrism is the belief that one's own culture is superior and is closely related to the self-reference criterion; it is a significant barrier in international business and cross-cultural interactions.
Step-by-step explanation:
Which of the following is closely related to the self-reference criterion? Among the options provided, ethnocentrism is the most closely related term. Ethnocentrism is the belief that one's own culture is inherently superior to other cultures. This concept is a significant barrier when conducting international business or engaging in cross-cultural interactions because it can lead to misunderstandings and misjudgments due to one's own cultural norms being used as the standard for interpreting the behavior of others.
While the other options such as marketing myopia, differentiation, pluralism, and multiculturalism relate to broader concepts within business and sociology, ethnocentrism specifically addresses a bias that can interfere with objective understanding and appreciation of different cultures.
Recognizing and overcoming ethnocentric attitudes is important to create a harmonious and successful multicultural workplace or business environment.