This study integrated perspectives of developmental science and clinical child psychology to examine the self-concept as an intra-individual contributor to mental health disparities between immigrant and non-immigrant youth throughout childhood development. We could replicate that immigrant youth report more internalizing mental health problems than non-immigrant youth and could also show that self-concept is linked to internalizing mental health problems. However, our analyses did not yield self-concept as a significant mediator for these associations. Despite this null effect we found that age moderated the association between self-concept and internalizing mental health problems. We discuss study evidence along the study hypotheses.
Immigrant children and adolescents experience more internalizing mental health problems than non-immigrants
We hypothesized that having a migration background would lead to increased levels of internalizing mental health problems. Indeed, migration status significantly predicted symptoms of depression as well as anxiety. These findings contribute to the ongoing debate whether the migration status is linked to an increased risk for mental health problems or fosters processes of resilience. Recent evidence on adolescent students in several European and other high-income countries substantiated the “immigrant (health) paradox”, i.e., immigrant youth have a better mental health [51, 52, 53, 54]. Based on a large dataset, our data does not substantiate such findings and links the migration status to a lower mental health. Our evidence, however, is backed by other psychological studies on the mental health gap between immigrant and non-immigrant youth [55, 56]. Possible explanations for these inconsistencies open two pathways. First, while the majority of these studies focus on immigrants from specific origin countries, our sample represents a cross-sectional immigrant population in Germany including a variety of ethno-cultural origins as well as immigrant generations. We have not only addressed first-generation immigrants but also a large sample of second- and several third-generation immigrants. Some previous evidence suggests that the “immigrant health paradox” might encompass first-generation immigrants only [57]. Second, as our data was collected in schools, the identified mental health disparities might reflect consequences of social and ethnocultural discontinuities that immigrant children and adolescents often experience between home and school contexts [25].
Self-concept does not mediate the link between migration status and depression/ anxiety
Our findings show that a lower self-concept in children and adolescents is linked to increased symptom levels of depression and anxiety. The findings are hence in line with our expectations and previous studies on children and adolescents drawn from general populations [22, 23, 24]. Our findings moreover suggest that such associations are generalizable to children and adolescents with diverse immigrant backgrounds.
However, our moderated mediation models fail to substantiate a lower self-concept as a mediator for the link between migration status and internalizing mental health problems. These findings contradict our expectations of a link between migration status and self-concept. At the same time, migration status significantly accounted for higher levels of internalizing mental health problems in our sample (H2). There are two ways to explain these findings. First, more specific dimensions of the self-concept rather than a global, unidimensional construct, are required to explain the link between migration status and internalizing mental health. In school settings, a domain-specific academic self-concept [58] could have provided the overarching and salient cognition for thinking about oneself. However, less salient components of the self-concept, such as self-esteem or emotional stability, could have been less salient for immigrant children and adolescents during study participation – even though such domains may have been more strongly linked to internalizing mental health problems. Second, the self-concept, either in unidimensional or multidimensional operationalization, is not directly associated with the migration status as we hypothesized. Considering the deductions from the coexisting immigrant paradox, immigrant youth could be better off in some health-related psychological outcomes (including the self-concept), while they simultaneously show increased symptom levels on others (including internalizing mental health problems). Subsequent research hence needs to further investigate which within-person processes during childhood and adolescence mediate the link between migration status and internalizing mental health problems. Schunck, Reiss and Razum [59] provided evidence that perceived discrimination negatively influences the mental health disparities between immigrant and non-immigrant adults in Germany. Following up on this track, the potential effects of perceived discrimination on mental health in children and adolescents, especially in school settings, should be examined.
Age moderates the link between self-concept and depression/ anxiety
Consistent with our expectations, we found that adolescents’ internalizing mental health problems are more strongly affected by a lower self-concept in our sample. The influence of the self-concept on the participants’ mental health status was moderated by age, i.e., a lower self-concept was more harmful for adolescents than for children. Considering age as a proxy for development, our evidence highlights the importance of developmental processes for understanding the relationship between self-concept and mental health. The crucial role of youth development for associations between the self and mental health problems has previously been supported, also for multi-ethnic youth [60, 61]. For young children, the self-concept is less validated by outside cues and tends to be more positive in general [62]. Moreover, Marsh, Parada, Yeung and Healey [63] postulated that younger children defend their self-concept with “troublemaking behaviour” (i.e., social-directed strategies). While our study focus was on symptoms of depression and anxiety, the specific symptoms of mental health problems with either externalizing or internalizing nuances that are associated with a low self-concept could vary depending on age.
Strengths, limitations and future research
There are several limitations that underline the need for future research on the identification of within-person mediators for the mental health disparities between immigrant and non-immigrant youth. First of all, the sample was collected via self-report measures in school settings. Our findings need replication in more sophisticated designs, e.g., using multi-informant approaches and longitudinal data collection from middle childhood to late adolescence. Second, the self-concept was measured via self-report questionnaires using a unidimensional construct equally applicable to a variety of social settings. The use of multi-faceted measurements, e.g., the “Self Description Questionnaire II” [37], could delineate whether a multidimensional approach to the self-concept leads to differing evidence. Third, the BYI-II subscales were administered to a highly heterogenous group with immigrant backgrounds. To date, constructs as operationalized in these inventories still have to prove psychometric fidelity and measurement invariance, especially with regard to ethno-cultural backgrounds of respondents. Future studies should additionally consider other mediators, e.g., the children’s or their families’ cultural orientations or perceived discrimination at school. Nonetheless, the present study has several strengths. It combined clinical child psychology and developmental science perspectives as it investigated the impact of the self-concept on symptoms of depression and anxiety from middle childhood to late adolescence. While past research on adolescent mental health has primarily focused on first-generation immigrant populations [7, 16], we also included second- and third-generations from multiple origin countries to acknowledge youth’s diversity in current German society. Regarding the study sample, our evidence is based on a regionally and socio-economically controlled sample across the largest federal state in Germany and data were collected in a variety of different school types.
Clinical implications
Our study findings underline the significance of the self-concept for the mental health of children and adolescents. Health care professionals and school teachers should hence consider the potential of psychological interventions that strengthen a positive self-concept, especially during adolescence [64]. Since our findings are based on a general sample, prevention measures based on the substantiated relationships may also be effective for supporting children and adolescents with lower self-concepts on sub-clinical levels. Correspondingly, Rosseau et al. [65] evaluated a specific prevention program that is based on arts and self-expression to strengthen the self-concept of immigrant and multi-ethnic youth in school settings. Over the course of twelve weeks, children enrolled in this program reported higher levels of well-being in comparison to a control group. Evidence for addressing students at a younger age was provided by De Bettignies and Goldstein [66]: Improvisational theatre classes in elementary schools can improve children’s self-concept and thus prevent internalizing mental health problems.
Conclusions
The proportion of children and adolescents with immigrant backgrounds in Germany has been increasing over recent years. Intersectional practice and research integrating developmental science and clinical child psychology is required to not only consider highly diverse backgrounds among children and adolescents but also needs to acknowledge the fact that those from immigrant backgrounds have increased levels of internalizing mental health problems. While this study substantiated evidence from previous studies on mental health disparities between immigrant and non-immigrant groups in school settings, our data did not substantiate that lower levels of the self-concept mediate these associations. The search for underlying mediators needs to be continued with more specific research designs and focus on other migration-related candidate variables.