Final answer:
Psychological disorders can indeed vary by ethnicity due to cultural differences, access to services, and experiences of discrimination, supporting the idea that mental health prevalence and treatment are influenced by ethnic and cultural factors.
Step-by-step explanation:
The statement that psychological disorders appear to vary by ethnicity is true. Research in the field of multicultural and cross-cultural psychology has shown that the prevalence, expression, and treatment of psychological disorders can differ across various ethnic groups. This variability can be attributed to a range of factors, including cultural beliefs about mental health, accessibility of mental health services, and experiences of discrimination or socioeconomic status.
For example, studies have indicated that there is disparity in depression treatment among racial and ethnic minority populations in the United States, and the prevalence of certain disorders like eating disorders may differ across ethnic groups. Furthermore, cultural competence in counseling is crucial for addressing the specific needs of culturally diverse clients, reinforcing the need for mental health professionals to be aware of and sensitive to the cultural and ethnic backgrounds of their clients.