Which concept in communication studies refers to the influence of ethnicity on interpersonal interactions?

The concept that specifically refers to the influence of ethnicity on interpersonal interactions is cultural identity. Cultural identity encompasses the values, beliefs, and practices associated with one's ethnicity, which shapes how individuals communicate and engage with others. This concept recognizes that people from diverse ethnic backgrounds bring different perspectives and communication styles to their interactions, which can significantly influence the dynamics of conversations and relationships.

While the other concepts mentioned play important roles in communication, they do not directly address the impact of ethnicity on interpersonal interactions. Ethnicity differences could imply a broader view but doesn't encapsulate the deeper connection of identity. Language barriers can complicate communication but are not solely related to ethnicity. Cross-cultural communication focuses on the exchange between different cultures, but cultural identity more specifically highlights how one's ethnicity shapes their unique communication experiences. Understanding cultural identity allows for a greater appreciation of the nuances in interpersonal interactions that stem from ethnic backgrounds.