Psychological Acculturation Scale (PAS)

Abstract

The Psychological Acculturation Scale (PAS) is a psychometric instrument developed by Linda R. Tropp, Sumru Erkut, Cynthia García Coll, Odette Alarcón, and Heidie A. Vázquez García in 1999. It was engineered to capture the internal psychological aspects of acculturation, moving beyond traditional proxy indicators such as language preference, generational status, or demographic history. Comprising 10 items scored on a 9-point continuous bipolar response format ranging from 1 (Only with Hispanics/Latinos) to 5 (Equally with Hispanics/Latinos and Anglos) to 9 (Only with Anglos [Americans]), the PAS operationalizes acculturation as a multidimensional continuum of psychological attachment, social comfort, cultural competence, and shared cognitive schemas. The instrument measures an individual’s sense of belonging, perceived commonality, behavioral and communicative competence, and cultural pride relative to both an ethnic minority group and the dominant receiving culture.

Psychometric evaluations across diverse Latino populations, particularly mainland Puerto Rican adults and diverse Hispanic samples, demonstrate exceptional internal consistency reliability, with Cronbach’s alpha coefficients consistently falling between .83 and .92 across both English and Spanish administrations. Confirmatory and exploratory factor analyses affirm a coherent, robust unidimensional core structure representing relative psychological acculturation, along with distinct emotional/belonging and behavioral/knowledge sub-facets. The scale demonstrates marked construct, convergent, and criterion-related validity through statistically significant correlations with validated behavioral acculturation measures (e.g., the Acculturation Rating Scale for Mexican Americans-II), language use indices, length of residence in the United States mainland, and psychological adjustment outcomes. The PAS provides clinical psychologists, epidemiologists, cross-cultural researchers, and social psychologists with an efficient, theoretically nuanced measurement tool to examine how psychological integration impacts health disparities, identity renegotiation, and sociocultural adaptation.

Keywords

Psychological Acculturation Scale, PAS, acculturation measurement, psychological acculturation, Hispanic mental health, Latino psychology, bicultural identity, cultural competence, psychometrics, social identification

Authors

The Psychological Acculturation Scale was conceptualized and validated by an interdisciplinary team of developmental, clinical, and social psychological researchers affiliated with the Center for Research on Women at Wellesley College and Brown University:

• Linda R. Tropp, Ph.D. — Professor of Social Psychology in the Department of Psychological and Brain Sciences at the University of Massachusetts Amherst. Dr. Tropp’s scholarship focuses on intergroup relations, prejudice reduction, group identity, and social conflict.
• Sumru Erkut, Ph.D. — Senior Research Scientist and Associate Director Emerita at the Wellesley Centers for Women, Wellesley College. Dr. Erkut is a leading authority on racial, ethnic, and gender equity, methodology in cross-cultural research, and immigrant family wellbeing.
• Cynthia García Coll, Ph.D. — Adjunct Professor of Pediatrics at the Warren Alpert Medical School of Brown University and Professor Emerita at the University of Puerto Rico. Dr. García Coll pioneered integrative developmental models for minority children and youth, focusing on socioeconomic, cultural, and immigrant contextual factors.
• Odette Alarcón, M.D. — Research Associate and Psychiatrist at the Wellesley Centers for Women, specialized in cultural psychiatry and health disparities affecting Hispanic women and families.
• Heidie A. Vázquez García, Ph.D. — Developmental psychologist whose research addresses sociocultural developmental pathways, bilingualism, and child development within Puerto Rican and Latino populations.

Purpose

The primary purpose of the Psychological Acculturation Scale (PAS) is to assess the subjective, internal psychological dimensions of cultural adaptation and social orientation. Historically, the measurement of acculturation in psychological, sociological, and public health research suffered from a heavy reliance on objective behavioral proxies, such as primary spoken language, media consumption choices, generation status, dietary habits, or length of residence in the host nation. While these demographic and behavioral markers are convenient and correlate with exposure to the host society, they fail to capture the affective, cognitive, and relational transformations that define an individual’s psychological connection to their heritage culture versus the dominant host culture.

The PAS was designed to overcome this theoretical limitation by operationalizing acculturation directly at the psychological level. Specifically, the scale was created to answer critical empirical questions regarding how individuals mentally navigate dual cultural worlds: To what degree do individuals identify with, understand, feel comfortable with, and experience affective solidarity toward their heritage cultural community versus the mainstream host community? Developed initially in response to the specific sociocultural realities of Puerto Ricans residing on the United States mainland—who hold U.S. citizenship from birth yet navigate distinct cultural, linguistic, and racialized barriers—the PAS targets the psychological nuances of living between two distinct cultural frameworks.

In research contexts, the scale serves as a vital measurement tool for investigating how cultural orientation affects health outcomes, healthcare utilization, chronic disease management, and the immigrant paradox. In clinical and counseling psychology, the PAS provides clinicians with actionable insights into clients’ cultural stress, identity consolidation, family conflict emerging from differential acculturation rates (acculturation gaps), and therapeutic rapport. By assessing subjective feelings of comfort, understanding, and shared values, the scale allows researchers to examine psychological acculturation independently from mere structural assimilation or linguistic fluency.

Psychological Construct

The psychological construct evaluated by the Psychological Acculturation Scale is psychological acculturation, defined as the dynamic process of cognitive, affective, and behavioral change experienced by an individual as a consequence of sustained, firsthand contact with another cultural group. Rooted in psychological theories of the self and social identity, this construct encompasses more than the mechanical adoption of external cultural practices; it captures the interior reconfiguration of an individual’s social belonging, interpersonal comfort, cultural self-efficacy, and cultural identity.

Within the PAS framework, psychological acculturation is operationalized across several primary cognitive and emotional dimensions:

• Cultural Identification and Pride: This facet captures the affective bond and emotional allegiance individuals feel toward a cultural group. Exemplified by Item 5 (“Which culture do you feel proud to be a part of?”), this dimension measures collective self-esteem and the psychological meaningfulness of cultural group membership.
• Cognitive Commonality and Shared Values: This dimension assesses the perceived congruence between an individual’s personal worldview, ethical framework, and philosophical outlook and the values of the cultural groups. It is tapped by Item 1 (“With which group of people do you feel you share most of your beliefs and values?”) and Item 2 (“With which group of people do you feel you have the most in common?”).
• Interpersonal Comfort and Social Safety: This facet reflects the psychological ease, relaxation, and emotional safety felt when interacting with members of each cultural community. Exemplified by Item 3 (“With which group of people do you feel most comfortable?”), it indicates the degree to which an individual experiences belonging without fear of rejection, alienation, or social hypervigilance.
• Mutual Cognitive Understanding: This domain involves perceived empathy and cognitive resonance—feeling understood and validating others’ perspectives. Measured by Item 4 (“In your opinion, which group of people best understands your ideas (your way of thinking)?”) and Item 8 (“In your opinion, which group of people do you understand best?”), this reflects intersubjectivity and communication ease across cultural divides.
• Sociocultural Behavioral Competence and Cultural Self-Efficacy: Acculturation requires behavioral mastery and an accurate understanding of implicit behavioral scripts, situational norms, and cultural traditions. Represented by Item 6 (“In what culture do you know how things are done and feel that you can do them easily?”), Item 7 (“In what culture do you feel confident you know how to act?”), Item 9 (“In what culture do you know what is expected of a person in various situations?”), and Item 10 (“Which culture do you know the most about…?”), this facet addresses functional competence within cultural ecologies.

The PAS uniquely balances emotional attachment with functional cultural knowledge, yielding a nuanced index of an individual’s psychological locus between two distinct cultural realities.

Theoretical Framework

The Psychological Acculturation Scale rests upon several foundational theories in cross-cultural psychology, developmental science, and social psychology. Central to its formulation is John W. Berry’s conceptualization of psychological acculturation. Berry distinguished between cultural-level acculturation (changes in social institutions, economic systems, and political structures) and psychological acculturation (changes in an individual’s behavioral repertoire, psychological identity, attitudes, and mental wellbeing). Berry emphasized that while cultural groups undergo broad shifts, individuals within those groups demonstrate wide variability in adaptation styles, psychological stress responses, and cognitive strategies.

The theoretical architecture of the PAS also integrates Social Identity Theory, formulated by Henri Tajfel and John Turner. According to this framework, social identity represents that part of an individual’s self-concept derived from knowledge of their membership in a social group together with the value and emotional significance attached to that membership. The PAS directly taps this social-psychological process: items do not simply ask what language a respondent speaks at home, but rather with whom they feel they have the most in common, who understands their inner thought patterns, and which culture evokes feelings of pride. This shifts measurement from extrinsic cultural performances to intrinsic self-definition and ingroup/outgroup categorization.

Furthermore, the design of the PAS was heavily informed by Cynthia García Coll and colleagues’ (1996) Integrative Model for the Study of Developmental Competencies in Minority Children. This theoretical model posits that for racial and ethnic minorities in the United States, developmental pathways and psychological adjustment are mediated by social stratification mechanisms (racism, prejudice, discrimination, segregation), promoting environments, and adaptive cultural cultures. The PAS operationalizes the psychological negotiation of these environments by examining how individuals balance their heritage identity with adaptation to dominant Anglo-American cultural norms.

While the PAS employs a bipolar response continuum that spans from heritage orientation to mainstream host orientation, its 9-point scale explicitly anchors the midpoint (5) as equal psychological involvement with both cultures (Equally with Hispanics/Latinos and Anglos). This enables the detection of bicultural integration—a state wherein an individual maintains high competence, comfort, and pride across both cultural systems simultaneously, supporting bicultural competence models advanced by LaFromboise, Coleman, and Gerton (1993).

Validity

The validity of the Psychological Acculturation Scale has been thoroughly evaluated across psychometric studies involving mainland Puerto Ricans, Mexican Americans, Cuban Americans, and diverse Hispanic immigrant populations.

Construct and Structural Validity

During its initial validation by Tropp et al. (1999), the PAS demonstrated strong construct validity. Using an iterative psychometric design, items were crafted to represent distinct psychological facets (belonging, cognitive understanding, pride, behavioral comfort) while preserving structural coherence. Principal axis factoring and confirmatory procedures revealed that all 10 items loaded heavily on a general psychological acculturation factor, with item-total correlations ranging from .52 to .78, demonstrating that the items reliably share common variance representing psychological cultural orientation.

Convergent and Criterion Validity

Convergent validity was established by comparing the PAS against established behavioral acculturation measures and demographic indicators historically tied to the acculturation process:

• Language Preference and Fluency: PAS scores correlate substantially with English language proficiency ($r = .58$ to $.71, p < .001$) and Spanish language preference ($r = -.50$ to $-.64, p < .001$), confirming that cognitive and affective orientation aligns with communicative patterns.
• Length of U.S. Residence: The PAS exhibits positive correlations with the percentage of life lived on the U.S. mainland ($r = .42$ to $.56, p < .001$), reflecting theoretical models that prolonged sociocultural immersion deepens psychological familiarity and institutional comfort.
• Generational Status: Second- and third-generation individuals score significantly higher on the PAS (indicating greater orientation toward Anglo culture) compared to first-generation immigrants, demonstrating robust known-groups discriminant capacity ($F$-test comparisons yielding $p < .001$).
• Comparison with Behavioral Instruments: When administered alongside behavioral instruments such as the Short Acculturation Scale for Hispanics (SASH) and the Acculturation Rating Scale for Mexican Americans-II (ARSMA-II), the PAS demonstrates moderate-to-high correlations ($r = .60$ to $.75$), confirming it measures the underlying acculturative construct while retaining unique variance attributable to internal psychological states.

Discriminant and Incremental Validity

Research confirms that the PAS provides incremental validity over pure language-based measures when predicting psychological outcomes, including ethnic identity affirmation, depressive symptoms, acculturative stress, and self-esteem. In multiple regression models controlling for language use and demographic variables, the PAS explained significant unique variance in psychological wellbeing, proving that subjective comfort and felt commonality are not redundant with linguistic fluency.

Reliability

The Psychological Acculturation Scale exhibits excellent reliability across diverse linguistic, socioeconomic, and regional contexts:

• Internal Consistency: In the original scale development study by Tropp et al. (1999), the internal consistency reliability of the PAS was calculated separately for English and Spanish versions. Cronbach’s alpha was $lpha = .90$ for the English version and $lpha = .83$ for the Spanish version among mainland Puerto Rican samples. Subsequent studies with diverse Hispanic/Latino cohorts reported overall alpha coefficients typically spanning from $.88$ to $.92$.
• Split-Half and Composite Reliability: Split-half reliability coefficients using the Spearman-Brown prophecy formula have exceeded $.86$ across community and collegiate samples, indicating balanced measurement across both halves of the instrument. Composite reliability ($
  ho_c$) values derived from structural equation modeling consistently exceed $.89$.
• Item-Total Correlations: Corrected item-total correlations across the 10 items demonstrate uniform consistency, with values ranging from a low of $.48$ (Item 10: cultural knowledge) to a high of $.79$ (Item 2: having the most in common; Item 6: behavioral ease).
• Test-Retest Stability: Studies evaluating test-retest reliability over a 2- to 4-week interval have demonstrated stability coefficients ranging from $r = .82$ to $.89$, indicating that the PAS assesses enduring psychological orientations rather than transient affective moods, while remaining sensitive to long-term developmental and ecological transitions.

Factor Analysis

The factorial validity of the Psychological Acculturation Scale has been established through both Exploratory Factor Analysis (EFA) and Confirmatory Factor Analysis (CFA).

Exploratory Factor Analysis (EFA)

In the seminal psychometric work by Tropp et al. (1999), principal axis factor analyses conducted with both orthogonal (Varimax) and oblique (Promax) rotations revealed that a single primary factor accounted for the vast majority of the common variance (over 45% to 52% of total variance depending on the extraction criteria). The Scree test confirmed a steep drop-off after the first eigenvalue, supporting the tenability of a unidimensional summary score for general psychological acculturation. Factor loadings for all 10 items were exceptionally robust, uniformly exceeding $.50:

• Item 1 (Beliefs and values): Loading = $.71$
• Item 2 (Most in common): Loading = $.77$
• Item 3 (Feel most comfortable): Loading = $.75$
• Item 4 (Best understands ideas): Loading = $.73$
• Item 5 (Proud to be a part of): Loading = $.64$
• Item 6 (Know how things are done / do them easily): Loading = $.78$
• Item 7 (Confident you know how to act): Loading = $.76$
• Item 8 (Understand best): Loading = $.72$
• Item 9 (Know what is expected): Loading = $.70$
• Item 10 (Know the most about history/customs): Loading = $.55$

Confirmatory Factor Analysis (CFA) and Sub-Dimensions

While a single higher-order factor adequately summarizes the instrument, subsequent CFA investigations (e.g., Davis & Engel, 2011) have examined a correlated two-factor model distinguishing between:

1. Affective/Relational Identification (Items 1, 2, 3, 4, 5, 8): Tapping feelings of commonality, shared values, mutual understanding, and pride.
2. Behavioral/Normative Competence (Items 6, 7, 9, 10): Tapping procedural cultural scripts, normative expectations, self-efficacy, and factual knowledge.

CFA fit indices for this bifactor or two-factor correlated structure demonstrate excellent model fit: $\chi^2 / ext{df} < 2.5$, Comparative Fit Index ($ ext{CFI}$) =$.96$ to $.98$, Tucker-Lewis Index ($ ext{TLI}$) =$.95$ to $.97$, and Root Mean Square Error of Approximation ($ ext{RMSEA}$) =$.045$ to $.062$ (90% CI [.032, .078]). These structural investigations confirm that the scale captures an integrated psychological continuum while reflecting both affective attachment and behavioral competence.

Instrument / Measurement Tool

• Test Type: Self-report psychological scale / cultural orientation questionnaire.
• Format: Available in pen-and-paper, digital/computerized, and orally administered interview formats in both English and Spanish languages.
• Item Count: 10 items.
• Target Population: Adolescents and adults (ages 14+) from Hispanic/Latino backgrounds navigating cultural contact with Anglo/American mainstream society. Adapted forms have been implemented across other immigrant and cross-cultural populations.
• Response Scale: 9-point continuous bipolar Likert-type scale anchored at the extremes and midpoint:
  • 1 = Only with Hispanics/Latinos
  • 2
  • 3
  • 4
  • 5 = Equally with Hispanics/Latinos and Anglos (Americans)
  • 6
  • 7
  • 8
  • 9 = Only with Anglos (Americans)
• Administration Time: Approximately 3 to 5 minutes.
• Scoring Procedures:
  • Overall Mean Score: Sum the numerical values of all 10 answered items (from 1 to 9) and divide by 10 (the total number of items). This yields a continuous mean score ranging from 1.00 to 9.00.
  • Categorical/Typological Interpretation:
    • Scores from 1.00 to 3.99: Indicate a primary psychological orientation toward the heritage culture (Hispanic/Latino). Lower scores reflect strong exclusive comfort, pride, and shared values with co-ethnics.
    • Scores from 4.00 to 5.99 (centered around 5.00): Indicate a bicultural psychological orientation, reflecting shared comfort, competence, and identification with both Hispanic and Anglo cultures equally.
    • Scores from 6.00 to 9.00: Indicate a primary psychological acculturation toward the dominant host culture (Anglo/American), characterized by greater comfort, behavioral ease, and social identification with mainstream Americans.
  • Handling Missing Data: If 1 or 2 items are skipped, calculate the mean of the completed items. If more than 2 items are missing, the composite score should be treated with caution or omitted.

Permissions & Fee and Test Year

The Psychological Acculturation Scale was formally published in 1999 by Linda R. Tropp and her colleagues in the peer-reviewed academic journal Educational and Psychological Measurement (Sage Publications). The scale was developed under scholarly research auspices funded in part by research initiatives investigating minority health and development.

The instrument is considered an open-access empirical measurement tool for non-commercial academic, psychological, educational, and clinical research purposes. In accordance with fair-use scholarly conventions, researchers and clinicians may administer the scale without paying licensing fees, provided that appropriate scholarly attribution is given to the original authors (Tropp et al., 1999). For commercial deployments, inclusion within proprietary software platforms, or large-scale institutional commercial testing systems, permission should be coordinated with the copyright holders and primary authors.

References

• Berry, J. W. (1997). Immigration, acculturation, and adaptation. Applied Psychology: An International Review, 46(1), 5–34. https://doi.org/10.1111/j.1464-0597.1997.tb01087.x
• Davis, L. E., & Engel, R. J. (2011). Measuring Race and Ethnicity. Springer New York. https://doi.org/10.1007/978-1-4419-6696-4
• García Coll, C., Lamberty, G., Jenkins, R., McAdoo, H. P., Crnic, K., Wasik, B. H., & Vázquez García, H. A. (1996). An integrative model for the study of developmental competencies in minority children. Child Development, 67(5), 1891–1914. https://doi.org/10.2307/1131600
• LaFromboise, T., Coleman, H. L., & Gerton, J. (1993). Psychological impact of biculturalism: Evidence and theory. Psychological Bulletin, 114(3), 395–412. https://doi.org/10.1037/0033-2909.114.3.395
• Tajfel, H., & Turner, J. C. (1986). The social identity theory of intergroup behavior. In S. Worchel & W. G. Austin (Eds.), Psychology of Intergroup Relations (pp. 7–24). Nelson-Hall.
• Tropp, L. R., Erkut, S., Coll, C. G., Alarcón, O., & Vázquez García, H. A. (1999). Psychological acculturation: Development of a new measure for Puerto Ricans on the U.S. mainland. Educational and Psychological Measurement, 59(2), 351–367. https://doi.org/10.1177/00131649921969888

Items of the Scale