Abstract
The primary purpose of the study was to identify acculturation group memberships of first-generation Nigerian immigrants in the United States of America, based on socio-demographics data. The study also determined the relative power of the predictor variables in the classification. The accuracy with which the sample participants were classified into acculturation groups was also explored. One hundred four first-generation Nigerian immigrants (
Keywords
Introduction
What is acculturation? Acculturation is a process characterized by changes in one’s culture, which occurs when people (mainly immigrants and native-born minorities) adjust to the mainstream culture of a plural society (Sam, 2000). Acculturation as a phenomenon has received attention since the 19th century, and within the 21st century, a number of acculturation theories have been postulated (Rudmin, 2009). In recent times, acculturation has evolved from a unidimensional concept of assimilation, such as the American
Migration is usually associated with educational, societal, economic, health care, and demographic variations (Aroian, 2005). During the acculturation process, a combination of these factors and experiences instigate stressful life changes that lead to what Berry (1992) called
Berry proposed four acculturation patterns, which are (a)
The acculturation strategies that immigrants use to adjust to a foreign culture have been univocally linked, in many cases, to both psychological and physical well-being. Therefore, it has become pertinent to determine the acculturation patterns among the different ethnic subpopulations in the United States, especially among groups that are historically understudied such as Nigerian immigrants. Identifying the acculturation patterns among Nigerians in the United States and the Diaspora in general would provide valuable insights about an additional area to assess when Nigerian immigrants need mental health services.
Furthermore, the acculturation strategies that people use to fit into a novel culture can be predicted by certain socio-demographics variables. According to Iman (2008), some variables that predict acculturation attitudes are age, residency, education, and so forth. Therefore, the purpose of the present study was to identify acculturation group memberships based on socio-demographics (predictor variables) data. In addition, the relative power of these predictor variables and the accuracy with which the sample was classified were also at the crux of the research project.
Design
As part of a larger research project, the current pilot study was conducted to predict acculturation group memberships among first-generation Nigerian immigrants. The study also sought to determine the relative power of the predictors and the accuracy of classification. Acculturation was the dependent variable (grouping variable) in the study. This variable had five levels, which were
Method
Participants
One hundred four (104) adults, who are first-generation Nigerian immigrants, and who resided in different states across the United States, were recruited for the study. There were 44.20% (
Instruments
Socio-demographics questionnaire
A socio-demographics questionnaire was developed specifically for the study. This instrument has 33 items. The socio-demographics questionnaire was used to gather information on participant age, sex, current employment status, current physical and mental health statuses, current income, residential area, job satisfaction, place of birth, marital status, years of legal residency in the United States, immigration experience, level of social support, influences on choice of destination country, the highest level of education attained, and so forth.
Depression Anxiety Stress Scales 21 (DASS-21)
DASS-21 (Lovibond & Lovibond, 1995) is a short-form version of the full Depression Anxiety Stress Scales (DASS), which is a 42-item measure. The DASS-21 has three subscales (7 items for each subscale), which were used to collect data on depression, anxiety, and stress.
Self-Efficacy Scale (SES)
SES (Sherer et al., 1982) is a measure for self-efficacy. The scale is a 30-item inventory designed to measure (a) general self-efficacy and (b) social self-efficacy (Sherer et al., 1982). Omoluabi (1999) revalidated the SES to foster its suitability to Nigerians. According to Omoluabi, the SES assesses (a) competence and effectiveness in work performances and (b) efficacy in handling social relationships among Nigerians.
Procedure
Participants completed a socio-demographics questionnaire, and an acculturation measure, the Nigerian-American Systemic Acculturation Scales (NASAS; Ndika, 2012, unpublished). The acculturation tool was constructed for use on Nigerian immigrants in the Diaspora, particularly in the United States. The socio-demographics questionnaire and the NASAS were administered, along with measures for self-efficacy, depression, anxiety, and stress. The subscale scores obtained from the NASAS were submitted to the Statistical Package for the Social Sciences (SPSS) discriminant function analysis (DFA), to determine acculturation group memberships. That is, the acculturation strategies the current sample uses to adapt to the American mainstream culture. The relative importance of each predictor variable in classifying the Nigerian immigrant sample into various acculturation groups, as well as the classification accuracy of the model, was also determined.
A correlation matrix was generated to examine the relationships between the socio-demographics data, the psychological constructs, and acculturation. Of the predictor variables, seven correlated most strongly with acculturation (grouping variables). These seven predictor variables had conceptual meanings, which supported their suitability as independent variables in the DFA. The variables were
Results
Of the total sample, $60,000 was the median annual income, 76% were university graduates, 76% were married, and 74% were gainfully employed. See Table 1 for a summary of socio-demographics variables of the study sample.
Summary of Socio-Demographic Variables of Nigerian Immigrants in the United States.
DFA
On the first iteration, most of the cases were not accounted for. This suggested that some of the sample participants might have reported the use of more than one acculturation strategy. Rudmin (2006, p. 1), who is a prominent acculturation researcher, wrote, “The acculturation paradigm of measuring assimilation, separation, integration and marginalization confuses dimensional and categorical conceptions of its constructs, fails to produce ipsative data from mutually exclusive scales . ...” Based on this premise, combinations of acculturation strategies were derived from the three basic acculturation patterns (
Following further computations, five acculturation groups emerged, which were
Acculturation Groups/Patterns Among the Study Sample.
Of the seven predictor variables, three significant predictors were identified. These significant predictors included
Summary on the Relative Importance of Predictors to the Discriminant functions.
Significant.
For the current data, the assumption of homogeneity was not violated. This finding suggested that the variances in each of the acculturation groups were approximately equal. Refer to Table 4 for a summary of the Box’s M test of equality of covariance matrices.
Summary of the Box’s M Test of Equality of Covariance Matrices in Acculturation Grouping.
Of the four discriminant functions that emerged from the analyses, only two functions were significant. The first discriminant function was significant at Λ = .319, χ2(28,
Function 1 had a canonical correlation of .642 (
Standardized Canonical Coefficients and Structure Weights From the Discriminant Model.
Analyses of the Discriminant Functions (i.e., the Dimensions)
Immigration support (Function 1)
The sample participants in the
Self-efficacy (Function 2)
The Nigerian participants classified in the

Representation of acculturation groups based on discriminant functions: Function 1 =
Approximately sixty-four percent (64.8%) of the cases were reclassified correctly by the DFA, which meant that, with a chance factor of 50%, 46 of the 71 cases were correctly reclassified. This percentage is probably an overestimation of the classification accuracy of the model, because it was tested with the same sample used to construct the model. Cross-validation on a different and a larger Nigerian immigrant sample is necessary. This is important especially when the discriminant function model is to be used in the clinical setting, rather than to describe group differences for theoretical purposes. See Table 6 for a summary of the re-classification acculturation group memberships.
Summary of the Classification Results Based on Acculturation Groups.
Discussion
Individuals living in plural societies might have to develop a variety of acculturation strategies, with which they navigate and cope with the multicultural contexts and diversity of the people with whom they interact. Most of the Nigerian participants, who had resided in the United States for more than 20 years (
Rudmin (2006) suggested that immigrants, aboriginal people, and the native-born ethnic minority often strive for assimilation into the prevailing culture of a plural society. This means that assimilation is generally perceived as the end result of the acculturation process. Literature further suggests that assimilation into the mainstream culture in a plural society is often preceded by the integration of one’s indigenous culture and the new culture. This can be interpreted as follows:
Literature on the preferred acculturation strategies used by immigrants and ethnic minorities is mixed. On the one hand, literature reveals that unidimensional acculturation strategies are used by immigrants and ethnic minorities in plural societies to adapt to the mainstream cultural way of living (Unger et al., 2002; Ward, 1999, as cited in Rudmin, 2006). Conversely, the utility of bidimensional acculturation patterns is also widespread among immigrants, ethnic minorities, and aborigines (Jang, Kim, Chiriboga, & Kallimanis, 2007; Ryder, Alden, & Paulhus, 2000).
Literature that supports the use of the bidimensional approach to acculturation suggests that individuals navigate multicultural contexts from more than one cultural perspective. This is opposed to the unidimensional approach to acculturation, where individuals are believed to approach acculturation from one isolated cultural standpoint, as they adapt to multicultural contexts. When an individual navigates multicultural contexts from at least two cultural perspectives, he or she is said to use the
Since the majority of Nigerians in the current study have lived for many years in the United States, it is likely they have modified their ethnic identity. Ethnic identity is one’s perceived membership in a social, cultural, and ethnic group, within which similarities such as cognitions, emotions, philosophies, and other characteristics are shared (Ashmore, Deaux, & McLaughlin-Volpe, 2004; Phinney, 1990; Watson, 2002). A large number of participants in the present study appeared to have a flexible ethnic identity, within which they perceive themselves as being Nigerian (separated), as well as being American (assimilated).
Ethnic identity flexibility could be described as having an ethnic self-concept, which gives individuals the malleability to shift between levels of meanings, depending of course on the social or cultural contexts they have to face. The finding is not surprising. After all, literature has shown that immigrants maintain, and in some cases promote, their mental health by engaging in their traditional practices, economic freedom, as well as the willingness to learn about the host culture (Knipscheer & Kleber, 2007). To this end, it may be an appropriate intervention to encourage and support immigrants in general to develop a flexible ethnic identity to facilitate the adaptation process.
Therefore, in this study, the
Merametdjian (1995; as cited in Rudmin, 2006) obtained similar results as the current study. Merametdjian assessed the acculturation patterns of Somali refugees in Norway. She found that many of the Somali participants endorsed more than one acculturation pattern, as their preferred adaptation strategy. However, while the Somali participants most frequently endorsed
Despite the strong similarities between Merametdjian’s study and the present study, there lies a major difference in the interpretation of the respective findings. Merametdjian (1995; as cited in Rudmin, 2006) and her mentor, Rudmin, attributed the failure to produce mutually exclusive data from the integration, assimilation, separation, and marginalization subscales, to psychometric problems. It is possible that psychometric problems may exist within many acculturation scales, as declared by Rudmin (2006), especially the measures fashioned after Berry’s model of acculturation. Yet, this may be a literal interpretation. Underlying this literal interpretation, it is more likely that human beings do not use, actually, cannot use, one exclusive acculturation strategy during any adaption process.
Because acculturation is a dynamic process, it likely demands multidimensional strategies. People are likely to develop dominant and auxiliary strategies with which they navigate and cope with multicultural contexts and diversity. Therefore, to adjust to the American cultural lifestyle, immigrants, ethnic minorities, and even the ethnic majority might have to develop multiple acculturation strategies. To this end, it is logical to assume that acculturation strategies will be used interchangeably depending on circumstances.
From a practical perspective, ethnic identity development and the acculturation processes have similar pathways (Watson, 2002). According to Cross (1978), there are three main stages of ethnic identity development. These stages include the pre-encounter stage, the encounter stage, a transition period, and then the internalization stage. The Nigerians who endorsed the
Watson (2002) demonstrated the similarities between ethnic identity development, and the
Kalin and Berry (1994) disclosed that people with multicultural backgrounds might more readily accommodate and respect other people, who are culturally different. This may not be an enduring quality in people from predominantly unicultural societies. Nigeria, like most African nations, is a conglomeration of different ethnic nations bound together under a common political and economic government. These ethnic groups have unique customs, traditions, cultures, histories, and languages. Yet, for decades, the members of these diverse Nigerian ethnic groups have retained their uniqueness, while mutually exchanging cultures and traditions with one another. Therefore, the indigenous Nigerian can be said to be constantly in contact with multiple cultural/social contexts. This is mostly true for those who have migrated from the rural areas to urban centers within Nigeria.
As the present study shows, to every rule, there are usually exceptions. Although the majority of the Nigerian samples reported the use of the
In conclusion, Unger et al. (2002) and Ward (1999, as cited in Rudmin, 2006) recorded similar results from their respective studies. Their participants were Westerners and Easterners, who endorsed the use of unidimensional acculturation strategies for adjusting to their host cultures. These findings appeared to show a link between their unicultural backgrounds and their preference for unidimensional acculturation strategies. Likewise, among Merametdjian’s (1995; as cited in Rudmin, 2006) Somalian participants in Norway, and the current study’s Nigerian participants in the United States, their preferred acculturation styles appeared to be a reflection of their multicultural backgrounds. These are interesting areas that require further exploration.
Footnotes
Acknowledgements
The author thanks the following professors for their generous support in the completion of her dissertation from which the present findings have been extracted. Manuel Figueroa-Unda, PhD; Debra Bekerian, PhD; Paul Lebby, PhD; and John Stephens, MS, MA; all at Alliant International University, Fresno California, in the United States.
Declaration of Conflicting Interests
The author(s) declared no potential conflicts of interest with respect to the research, authorship, and/or publication of this article.
Funding
The author(s) received no financial support for the research and/or authorship of this article.
