1. Introduction
Family systems theory proposes that the family system is composed of different interrelated subsystems: marital, parental, and fraternal [
1]. These subsystems cannot be understood as independent entities, but to understand the family context and the development of their individuals, the relationships and influences between subsystems must be addressed [
1]. Specifically, the marital or inter-parental subsystem refers to the relationships among the caregivers of the child. This subsystem exists prior to the birth of the child and is maintained during childhood and adolescence. In comparison to the parental subsystem, the inter-parental subsystem is expected to be characterized by symmetry in the relationship. Thus, couple relationships should present a functioning negotiated by the members of the couple [
2]. These norms determine the way in which these individuals perceive themselves and each other. When a behaviour differs from the established interaction pattern model, it can generate tension and confrontation in the couple. The parent-child relationship is not independent of the existing tensions in the couple relationship. In this sense, the influence between the parental subsystem and the marital subsystem is bidirectional [
3]. In this way, conflicts in the couple can have consequences in the parental relationship and in the adjustment of adolescents who grow up in these families. In fact, identifying the dimensions affected by marital conflict can be of great interest to develop interventions and treatments at the family and individual levels and ultimately to protect children and adolescents from marital conflicts.
Marital conflict refers to a mutual opposition between the members of the couple that reflects differences among them [
4]. Given these differences, some couples are able to generate effective coping mechanisms to restore balance and well-being in the system. However, others present greater difficulties in seeking solutions, which causes even more problematic events within the marital subsystem and the family system [
5].
Conflict is unavoidable, and some authors suggest that it can even have a constructive function through cooperative interactions [
2]. Constructive conflicts are characterized by a warm environment in which both parties focus on the search for common agreements, express their feelings, provide positive feedback, respect different points of view and could reach the most cost-effective and constructive solution [
6]. Likewise, constructive processes involve cooperative interaction patterns and effective problem-solving behaviours between partners in which both understand the needs and demands of the other [
7].
However, conflict can also be interpreted as a source of stress between partners when it negatively interferes with their quality of life [
8]. Destructive conflict is used when a disagreement between partners is characterized by the appearance of negative emotions and behaviours such as anger, verbal, and nonverbal hostility, and/or physical aggression. The main indicators refer to arguments, insults, threats, contempt, shouting and/or abuse between parents [
9]. These conflicts lie in ineffective resolution behaviours, negative cognitive evaluations, incongruent expectations, and poorly adaptive coping strategies [
7]. The reasons for this conflict can be very diverse: the economy, housework, family relationships, differences in values, expectations about their relationship, sexuality, or education of children, among others [
7].
Different theories explain the influence of marital conflict on parent-child relationships and on adolescent mental health. At the behavioural level, following the social learning theory [
10], those children exposed to marital conflict can learn to perpetrate a series of aggressive behaviours in their interpersonal relationships with peers. According to the cognitive-contextual model [
11,
12], the exposure of children to inter-parental conflict can favour the appearance of a series of negative attributes, such as a greater perception of threat and self-blame feelings. According to the theory of emotional security [
6,
13], children need to perceive that their entire family system is safe, in addition to establishing a positive relationship with their attachment figures.
Marital conflict has several implications both at family and parental levels. There is a significant relationship between the parental role and that of a partner since a positive marital relationship is associated with better parental competence [
14]. However, when there is a confrontation between the members of the couple, the attention and supervision of the child can be neglected [
15]. In fact, the spillover hypothesis argues that anger and hostility associated with inter-parental conflict can make parents less patient and more reactive towards their children [
8]. It is observed that adolescents exposed to episodes of marital conflict value the relationship they have with their parents less positively and seek less affection and emotional support from them [
16]. Likewise, conflicts between parents can make adolescents feel guilty and divided, which in some cases causes them to seek security by establishing a preferential relationship with one of the two parents, which can cause a loyalty conflict [
17]. From this perspective, the compensatory hypothesis indicates that parents exposed to conflicts in their relationship seek to spend more quality time with their children [
18,
19]. Kouros et al. [
20] show data that support this compensatory hypothesis among mothers but not fathers.
In general, inter-parental conflict is related to a worse parent-child relationship and a worse bond between the two [
6]. When considering parent gender (mother or father), low quality in the relationship (less affection and more conflict) is found especially with the fathers of children and adolescents exposed to marital conflict in comparison with the mothers of children and adolescents exposed to conflict [
21,
22]. However, other studies show poor quality of the parent-child relationship regardless of sex and a negative relationship with the father only after a divorce [
23,
24,
25,
26].
Regarding the psychosocial adjustment of children and adolescents exposed to conflict, it is known that marital conflicts can alter the emotional security of the child, which is manifested in emotional reactions of fear, anguish, and threat [
27]. When young people perceive a possible risk to their emotional security, they show concern and react immediately to this situation or react with indifference [
28]. Thus, those conflicts characterized by attitudes of aggression and anger between the parents are a serious risk factor for the development of maladaptive skills in children and adolescents [
29]. When they are exposed to marital conflict, information processing before a certain episode with peers presents a certain tendency to hostility and anger [
8]. Thus, the probability that those children exposed to conflict become in adolescents presenting aggressive behaviours and experiencing dysfunctional relationships is higher in comparison to other children [
5]. However, according to the stress relief hypothesis [
30], children exposed to high levels of marital conflict improve when divorce occurs and their exposure to conflicts decreases [
31]. Moreover, the marital conflict will make it more difficult for the adolescent to establish a healthy self-concept, exhibiting difficulties in the development of his self-concept and self-care. Finally, the increase in problems during the adolescence period is related to inter-parental conflict and lower marital satisfaction [
32,
33].
Research has conceptualized the influence of marital conflicts on the family system and on the adjustment of children and adolescents. However, most of these studies have been generic and described parental relationships without addressing the specific father-adolescent and mother-adolescent bond. Additionally, most of the literature focused on analysing the influence of marital conflict on children reports data in middle-class contexts. Following the recommendations of Yu et al. [
22], it is necessary to study marital conflict and its association with the father-adolescent and mother-adolescent relationship among low-income families. Additionally, according to Arenas-Rojas [
34], families at psychosocial risk are in a situation of vulnerability as a result of the presence of multiple risk factors, such as the characteristics of parents and children, the patterns of interaction and relationships, and the characteristics of the neighbourhood and the community. In relation to parental figures, the presence of a low educational level and/or a precarious work situation, the diagnosis of a psychological disorder and/or problems related to consumption can be considered risk factors. In relation to the community context, risk factors include a negative economic situation, a high dependence on social assistance, high levels of community violence and a precarious place of residence that endangers the integrity of its members and their relationships [
34].
In situations of psychosocial risk, it is possible that the quality of the couple relationship is influenced by stressors. When the members of the couple face a series of stressful events, these events negatively affect the quality of that relationship, increasing the frequency of conflicts and arguments [
34]. Therefore, it is not strange to observe how in families at psychosocial risk, satisfaction with the couple relationship is at lower levels with respect to the average [
34]. Similarly, there is a high degree of marital instability and multiple separations between the members of the couple [
35]. In a complementary way, a good relationship within a context of psychosocial risk can act as a moderator of the influence exerted by stressful life events in the family system. Thus, the quality of the relationship can influence how a situation of psychosocial risk affects the development of adolescent children [
34].
Given the small number of studies based on analysing the impact of marital conflict in parent-adolescent and mother-adolescent dyadic terms, in addition to its analysis in families at psychosocial risk, the general objective of this study is to analyse how marital conflict plays a relevant role in the adolescent-mother and adolescent-father attachment and in the psychosocial adjustment of disadvantaged adolescents. This study has two specific objectives: (a) to compare parental attachment in the mother-adolescent and father-adolescent dyads between adolescents exposed to marital conflict and unexposed adolescents; and (b) to analyse adolescents’ psychosocial adjustment by comparing aggressiveness, antisocial behaviour and emotional intelligence among adolescents exposed to marital conflict and unexposed adolescents. As the main hypothesis, according to the available evidence, it is proposed that adolescents exposed to marital conflicts in risk areas will show worse attachment with both their mother and their father as well as worse psychosocial adjustment compared to those adolescents not exposed to this type of conflict.
4. Discussion
The general objective of this study was to compare mother-adolescent and father-adolescent attachment as well as psychosocial adjustment between adolescents exposed to marital conflicts and adolescents not exposed to this type of conflict. This objective was specifically explored in a sociocultural setting and a sample with little prior evidence as Spanish adolescents from CWS living in disadvantaged neighbourhoods. Families at psychosocial risk are usually characterized by a high rate of interparental conflict [
43], an aspect that coincides with what was found in this study, where almost half of the adolescents were exposed to interparental conflicts. Considering that the quality of the marital relationship is an important predictor of the quality of family dynamics and adolescent development, particularly in risky areas [
34], these results support the importance of developing preventive measures to improve the quality of family relationships.
Regarding the mother-adolescent and father-adolescent dyadic relationships, the data revealed that the impact of marital conflict on parental attachment varies depending on the parental figure. Our data suggested that interparental conflict affects the relationship established by the adolescent with the father figure to a greater extent. There has been controversy in the literature about the differential impact of marital conflict on the relationship of the adolescent with his mother and father [
22,
23,
24,
25,
26]. More evidence is available indicating that marital conflict equally affects the relationship with the mother and the father [
23,
25,
26]. However, our results support those studies reporting that marital conflict affects the relationship with the father to a greater extent [
21,
22]. There is some evidence indicating that in a situation of family stress, adolescents need to find security in one of their parental figures [
17]. Considering the risk situations in which the research was developed, it is possible that these adolescents had a greater need for a secure attachment to face the family and community stress they are exposed to. Likewise, in contexts of risk where job insecurity is high, it is possible that the adolescent perceives the vulnerability of the mother and shows greater concern for her well-being [
17]. In this regard, Iraurgi et al. [
12] state that in situations of marital conflict, children seem to adopt triangulation strategies to cope with the discomfort caused. From the systemic theory, Minuchin [
1] already expressed that in situations of conflicting loyalties, children usually adjust to a process of triangulation that can lead to other problems. This phenomenon indicates that adolescents experience division among their parents which means aligning with one parent against the other [
17,
44]. Attaching to the mother, as occurs in situations of separation after exposure to marital conflict [
23,
24], can result in paradoxical well-being for the adolescent who obtains short-term support, but in the medium-long term, this can have consequences in his adjustment given the distance from the father and the loss of a quality relationship with one of the two parental figures. Following the systemic theory [
1], the adolescent exposed to a coalition with the mother against the father can adopt a role of parentification or spousal role with respect to his mother, which has been associated with adjustment problems. However, the fact that the adolescent shows an improved relationship with his mother may be partial support for the compensatory hypothesis [
18,
19], which establishes that, in situations of couple conflict, one of the members of the couple will seek to spend more quality time with the children. Thus, in risky contexts characterized by job insecurity, it is possible that women can spend more time at home in favour of greater attachment to their children.
Continuing with the psychosocial adjustment of adolescents exposed to conflict, the spillover hypothesis [
8] proposes that the situations of tension between the couple can be transmitted to the children and affect their behaviour. According to this hypothesis, there are greater differences between adolescents exposed to conflicts and nonexposed adolescents in the dimension of anger and stress management.
In relation to anger and stress management, our results are partially consistent with the evidence about how exposure to situations of marital conflict is related to a greater predisposition in adolescents to aggression and hostility [
45,
46]. According to modelling theory [
10], adolescents exposed to interparental conflict have probably learned that aggressive behaviour is an appropriate way to solve problems and, therefore, tend to behave in the same way in their interactions [
4]. Thus, the exposure of adolescents to episodes of conflict between their parents contributes to the processing of information before a certain event with their peers which presents a certain tendency to hostility and anger. However, this relationship is influenced by the way in which the conflict is expressed. It is possible in those families in which frequent but less intense conflict between parents does not have as negative an influence on the children compared to conflict between parents that includes behaviours such as physical aggression [
4,
47]. Our data did not show differences between groups in dimensions such as intrapersonal intelligence, interpersonal intelligence, or antisocial behaviour, but did on anger and stress management. Dimensions such as emotional intelligence can be more resistant to change, with stress management being a specific complication. In scenarios of exposure to conflict, might be a deficit of resources for stress management. These results are consistent with the evidence that supports the direct influence that inter-parental conflict has on the increase in stress levels of children and adolescents [
48,
49,
50]. Moreover, although exposure to the conflict may increase the levels of anger among the exposed group compared to the unexposed group, this increase in anger may not be accompanied by a greater manifestation of antisocial behaviour. Emotional intelligence can act as a buffer for this result. Also, the finding that attachment with the mother presents similar levels in both groups may indicate that this relationship is a protective factor for the exhibition of antisocial behaviours. In fact, previous studies have found that positive attachment with the mother acts as a protective factor in antisocial behaviours [
51].
This study has several limitations. At the methodological level, the study has a medium sample size given the specificity of the sample, which makes it difficult to compare other variables, such as father-son, father-daughter, mother-son, and mother-daughter dyads. In addition, a dichotomous view of conflict is presented, with the analysis of the frequency and intensity of marital conflict left for future research. Likewise, it is unknown whether the marital conflict is symmetrical or asymmetrical, as well as the power differences among individuals in the couple. A multi-informant evaluation design that includes the point of view of fathers and mothers could shed some light.