An experienced organizational consultant and psychotherapist, Mark Chae, Ph.D. is a counseling education professor at Pillar College. Mark Chae, Ph.D. draws on nearly three decades of experience in psychology and is a professional member of both the American Counselling Association and the American Psychology Association. He is one of the authors of "Relationship of Ethnic Identity, Acculturation, and Psychological Well-Being Among Chinese, Japanese, and Korean Americans." Although both terms partly assess how far an individual has maintained their ethnic heritage within a foreign environment or new society, acculturation and ethnic identity are two entirely different concepts. Acculturation, in essence, defines an individual's adaptation status to different beliefs, behaviors, and values encountered within a new environment. Ethnic identity, on the other hand, refers to minority groups collaborating and negotiating with each other in a foreign environment, developing a good relationship and more positive attitude toward members of the same group as a distinct subdivision of the majority in a different society. In the context of acculturation status, there are three subdivisions - separated, bicultural or integrated, and assimilated. What differentiates each category is the level of assimilation of the new culture and how much is retained of pre-existing cultural heritage. Ethnic identity, however, is not categorized.