Acculturation is the ongoing process of adapting when a person from one culture comes into sustained contact with a different culture. In psychology, it goes beyond simply “fitting in.” It encompasses shifts in daily behaviors, personal values, social identity, and even physical stress responses. The concept applies to immigrants, refugees, international students, and children raised in households where their parents’ culture differs from the surrounding society.
How Psychologists Define Acculturation
Early researchers treated acculturation as a straight line: a person gradually moves from their original culture toward the new one. Modern psychology has largely abandoned that view. The current understanding treats acculturation as multidimensional, meaning a person’s relationship with their heritage culture and their relationship with the receiving culture are two separate, independent processes. You can strengthen your connection to a new culture without weakening your connection to the one you came from.
This distinction matters because it opens up a wider range of outcomes. Rather than measuring how “Americanized” or “assimilated” someone is on a single scale, researchers now look at cultural practices (what you do), cultural values (what you believe), and cultural identifications (who you feel you are) as separate threads. Someone might speak English at work and cook traditional food at home, celebrate national holidays in their new country while holding deeply to spiritual beliefs from their homeland. These aren’t contradictions. They’re different dimensions of the same process.
Berry’s Four Strategies
The most widely taught framework in acculturation psychology comes from John Berry, who proposed that the intersection of two questions produces four possible strategies. The questions: Do you maintain your heritage culture? Do you participate in the receiving culture?
- Integration: You adopt the new culture’s practices and values while retaining your heritage culture. Sometimes called biculturalism.
- Assimilation: You adopt the receiving culture and discard the heritage culture.
- Separation: You reject the receiving culture and retain the heritage culture.
- Marginalization: You disengage from both cultures.
These aren’t permanent personality types. A person might lean toward separation in the first year after moving to a new country, then gradually shift toward integration as they build social connections and gain language fluency. Context matters too. Someone might integrate at work but maintain separation in their home life or religious community.
A meta-analysis of 325 studies found that integration was the most favorable acculturation strategy for mental health, correlating with higher self-esteem and life satisfaction and lower rates of depression and anxiety. Marginalization consistently showed the worst outcomes. This finding has been remarkably stable across different immigrant populations and receiving countries.
Acculturative Stress
The term “acculturative stress” was introduced in the 1970s to describe the specific emotional and physical toll of cultural adaptation. It’s not just generic stress that happens to occur during a move. It refers to distress caused directly by the demands of navigating between cultures: communication barriers, discrimination, identity confusion, loss of familiar social networks, and the grief of leaving a previous way of life behind.
Symptoms include excessive worry, depressed mood, feelings of hopelessness and isolation, identity confusion, and physical complaints like headaches or stomach problems (a pattern psychologists call somatization). In immigrant youth specifically, acculturative stress has been linked to depression, anxiety, eating disorders, substance misuse, and behavioral problems. One longitudinal study found that high levels of acculturative stress predicted suicidal ideation two to three years later by deepening feelings of hopelessness.
The stress response isn’t just psychological. Research on biological markers shows that acculturation patterns can influence cortisol, the body’s primary stress hormone. People who strongly adopt the receiving culture while maintaining low connection to their heritage culture tend to show a flatter daily cortisol rhythm, a pattern associated with chronic stress. In contrast, bicultural individuals (those high in both heritage and receiving-culture orientation) showed a healthier, steeper cortisol response when faced with a stress test. Foreign-born individuals who had lived in the United States for more than ten years showed higher cumulative wear-and-tear on the body compared to those who had been in the country for a shorter period, suggesting that the physiological effects of acculturation build over time.
What Shapes How Acculturation Goes
Acculturation doesn’t unfold the same way for everyone. Several factors influence whether the process leans toward successful adaptation or chronic stress.
Language proficiency is one of the strongest predictors. Difficulty communicating in the receiving culture’s language is consistently linked to higher anxiety and greater acculturative stress. In one comparison of student groups in Canada, Hong Kong Chinese students reported the highest trait anxiety, which was directly tied to communication difficulties rather than personality traits.
Perceived discrimination is another major factor. Experiencing prejudice in the receiving society can erode self-esteem and push people toward separation or marginalization rather than integration. Age at migration also plays a role. People who arrive at older ages tend to show higher cumulative stress on the body, likely because the cognitive and social demands of adapting to a new culture are steeper when habits, identity, and social skills are already well established.
Personality matters, but not in isolation. Researchers have proposed a “cultural fit” hypothesis: the match between a person’s characteristics and the norms of the new cultural setting predicts adaptation better than personality alone. An extroverted person might thrive in a culture that values sociability but struggle in one that prizes restraint.
Acculturation vs. Enculturation
These two terms are easy to confuse, but they describe different situations. Enculturation is the process of learning the culture you’re born into, typically as a child absorbing the norms, values, and practices of your family and community. Acculturation is what happens when you encounter a culture that isn’t originally yours.
Both involve instruction, conscious imitation, and unconscious adaptation. Both are also reciprocal. While the focus is usually on how the newcomer changes, acculturation also shapes the receiving community. Neighborhoods, workplaces, and schools shift when new cultural practices enter them. This “reciprocal accommodation” has been recognized in the literature since the early 1900s, though psychology has historically paid far more attention to how the newcomer adapts than to how the host culture changes.
How Acculturation Is Measured
Psychologists use structured questionnaires to assess where someone falls along the dimensions of heritage-culture and receiving-culture orientation. Several validated scales exist, each designed for specific populations:
- Acculturation Rating Scale for Mexican Americans (ARSMA-II): Measures cultural orientation toward Mexican and Anglo cultures independently, distinguishing five levels from “very Mexican” to “very Anglicized,” with three bicultural categories in between.
- Suinn-Lew Asian Self-Identity Acculturation Scale: Modeled after the ARSMA but designed for Asian American populations, with high reliability across studies.
- Vancouver Index of Acculturation (VIA): A 20-item questionnaire assessing participation in and interest toward both one’s heritage culture and the mainstream culture. It’s one of the more broadly applicable tools, not tied to a single ethnic group.
These scales ask about language use, food preferences, social relationships, media consumption, cultural traditions, and sense of belonging. The results help researchers study population-level patterns, but they also have clinical applications. Mental health professionals can use acculturation assessments to better understand a client’s cultural context, which informs how therapy is structured and delivered. Research on therapists themselves shows that a clinician’s own cultural identity influences how they adapt treatment approaches, with bicultural therapists making the most modifications to standard protocols.
Why It Matters Beyond Immigration
Acculturation research originated in the study of immigration, but the underlying process applies more broadly. Indigenous communities experience acculturation pressures when dominant-culture institutions reshape their daily lives. Second- and third-generation children of immigrants navigate acculturation even though they were born in the receiving country, often straddling cultural expectations at home and at school. International students, military families stationed abroad, and refugees all undergo versions of the same process.
Understanding acculturation helps explain patterns that might otherwise seem puzzling: why health outcomes for some immigrant groups worsen the longer they live in a new country, why bilingual individuals sometimes report different emotional experiences depending on which language they’re using, or why family conflict can spike when parents and children acculturate at different speeds. The child who integrates quickly may clash with parents who maintain separation, creating a generational rift layered on top of the usual parent-child tensions.