Effects of family interventions on interpersonal conflicts: A network perspective Lukas Fellmann School of Social Work, University of Applied Sciences and Arts Northwestern Switzerland, Muttenz, Switzerland Abstract • Summary: Intense conflicts are prevalent in families receiving child welfare services. Research in the field of family interventions usually focusses on dyadic conflicts within the limits of the nuclear family unit, ignoring the larger social context of families. Therefore, this study analyses effects on interpersonal conflicts in personal networks of parents during a family intervention. The theoretical framework is based on the family systems theory, which highlights the role of mutual trust for conflict resolution. This research applied ego-centric network analysis in combination with a longitudinal design. The sample consists of 46 parents who were enrolled in a home-based family interven- tion in Switzerland. • Findings: The results show that development of mutual trust between practitioners and the network members of parents is associated with significant decrease in conflict density and conflict reciprocity. Hence, network members experience fewer interac- tions that are associated with conflict as well as less intense conflicts in the medium term. However, no effects were found on the centrality of parents in interpersonal conflicts. • Applications: The results of this study suggest that practitioners in family interventions must establish mutual trust with not only parents but also other individuals to promote a less stressful family environment. This emphasizes the importance of a network perspec- tive on interpersonal conflicts in child welfare interventions. Corresponding author: Lukas Fellmann, School of Social Work, University of Applied Sciences and Arts Northwestern Switzerland, Hofackerstrasse 30, Muttenz, 4132, Switzerland. Email: lukas.fellmann@fhnw.ch Article Journal of Social Work 2023, Vol. 23(3) 548–566 © The Author(s) 2023 Article reuse guidelines: sagepub.com/journals-permissions DOI: 10.1177/14680173221144552 journals.sagepub.com/home/jsw https://orcid.org/0000-0002-9687-1577 mailto:lukas.fellmann@fhnw.ch https://us.sagepub.com/en-us/journals-permissions https://journals.sagepub.com/home/jsw http://crossmark.crossref.org/dialog/?doi=10.1177%2F14680173221144552&domain=pdf&date_stamp=2023-02-23 Keywords Social work, family interventions, child and family welfare, conflict, family support, quantitative research Introduction Family conflicts are a common risk factor for the well-being of children who are recipi- ents of child welfare services (Autorengruppe Kinder- und Jugendhilfestatistik, 2021, p. 22). Interpersonal conflicts in families have wide ranging negative effects not only on parenting but also children’s well-being (Grych & Fincham, 2001; Sarrazin & Cyr, 2007). For instance, interparental conflicts are associated with adverse parenting such as harsh punishments or low parental acceptance (Krishnakumar & Buehler, 2000) as well as negative outcomes in numerous domains of child functioning, such as external- izing (e.g., aggression, delinquency) and internalizing behavior (e.g., anxiety, depressive symptoms) or emotional, cognitive, behavioral, and physical responses (van Eldik et al., 2020). In most studies regarding family intervention outcomes, conflicts are either operatio- nalized in a dyadic form (e.g., parent–child, parent–parent) or, in fewer instances, as family conflicts, but without any specification of the family unit. In both cases, however, conflicts are implicitly limited to the nuclear family unit. Current family research emphasizes the fact that dyadic interactions are influenced by a larger web of interdependent relationships (Widmer, 2010). Therefore, families should not be consid- ered as isolated entities; they should also include meaningful and influential ties with friends, kin, in-laws, neighbors, colleagues, and others (Bengtson, 2001; Widmer et al., 2013). Thus, family ties are bound neither to the nuclear family unit nor to the limits of the household. They are of high relevance, exerting both positive and negative effects on various domains of life (Widmer, 2010). Conjugal conflicts, for instance, are significantly associated with network characteristics in which the conflicted parties are embedded (Widmer et al., 2004). Related research has shown that the likelihood of con- flicts is associated with the composition of one’s personal network. Networks that focus on the nuclear family tend to produce more conflicts than do more diverse networks (Widmer et al., 2018). This research hypothesizes that family interventions trigger complex dynamics in con- flict patterns within personal networks involving ties that go beyond the boundaries of the nuclear family unit. A dyadic view on conflicts in family intervention research does not account for the diversity of conflict patterns that are present in families receiving child welfare services. The importance of trusting working relationships for conflict resolution Although conflict resolution is a common goal of family intervention programs, research reveals inconsistent results regarding the effects on interpersonal conflicts. Whereas some Fellmann 549 studies reveal a significant decrease in conflicts between family members (Lewis, 2005; Messmer et al., 2021; Smith, 1995), others show only a negligible decrease (Al et al., 2014) or no effects at all (van Puyenbroeck et al., 2009). Child protection service and family intervention practitioners describe their work with families afflicted by intense conflicts as particularly demanding, as they are affected by higher levels of stress, intense emotions, and feelings of helplessness and frustration (Katz et al., 2019; Saini et al., 2012; Sudland, 2020). Working with high-conflict families requires more time, energy, and resources than does working with other cases (Saini et al., 2012). Parents and children who are involved in or affected by intense parental conflicts are often in dif- ficult emotional states and experience great distress (Katz et al., 2019). Some social workers have reported parents pressuring their children to act or decide on their behalf (Saini et al., 2019). In social work, a good relationship between practitioners and service users is of para- mount importance for achieving the intervention goals (Ruch et al., 2010). Extensive research suggests that service users’ motivations and outcomes of social work interven- tions are largely determined by the quality of the practitioner–client relationship, which is also referred to as working alliance (Al et al., 2014; Buckley et al., 2011). However, in child welfare services, establishing a positive relationship is often challenging due the mandatory nature of the intervention (Ferguson et al., 2021) and the power asymmetries in the practitioner–client relationship (Dumbrill, 2006). Among the several aspects that define a relationship, mutual trust is essential to build a working alliance between practitioners and service users (Bekaert et al., 2021; Cossar et al., 2016; Husby et al., 2018; Valenti et al., 2020). Research concerning the practitioner–parent relationships points out that a trusting relationship is associated with increased cooperation (Messmer et al., 2021; Thrana & Fauske, 2014). Regarding the practitioner–child relation- ship, trust is an essential requirement for the participation of children in family interventions (Cossar et al., 2016; Husby et al., 2018). In general, research has shown that a trusting rela- tionship between family members and practitioners is associated with higher commitment of families and more positive outcomes (Bekaert et al., 2021). As a matter of fact, research also indicates that the beneficial effects of a trusting working relationship on intervention outcomes particularly come into play for the resolution of family conflicts (Sudland, 2020). The development of trust in the context of family conflicts is a fundamental requirement for positive change. A recent study has shown that practitioners who take sides in mother–child conflicts fail in releasing the tension because both parties cannot trust the practitioner (Brauchli, 2021, p. 358). Therefore, this study expects that the effects on interpersonal conflicts can be better explained by considering the level of mutual trust between the practitioner and the multitude of individuals involved in a particular family intervention rather than by an isolated view on dyadic relationships, such as the prac- titioner–parent or practitioner–child relationship. A network approach to evaluating family interventions This research proposes a network approach to examine the effects of family interventions on interpersonal conflicts. When applying such an approach to measure the effects of 550 Journal of Social Work 23(3) family interventions, one must consider two main elements: first, the personal network in which parents are embedded, as its structure and composition can greatly influence par- enting resources, beliefs, and practices (Belsky, 1984); second, the intervention, which consists of the ties between the practitioner and the members of the network who are involved in the family intervention. The goal of the practitioner is to support the network to self-sufficiently develop new strategies to secure and promote the well-being of the child(ren). In such a framework, the practitioner is deemed a “relational resource” that can be consulted by the network members (Folgheraiter, 2004). In this regard, research suggests that the establishment of a trusting working relationship results in effective participation of network members in the family intervention (Cossar et al., 2016; Husby et al., 2018; Valenti et al., 2020). Personal network Personal networks of parents are diverse in terms of size, composition, and structure (Widmer, 2006, 2007). They consist of meaningful and interconnected relationships that go beyond the boundaries of the nuclear family. These relationships provide a crucial socialization context for children since they are affected by them in many positive and negative ways (Cochran & Brassard, 1979). A network approach stresses that family problems are rooted in personal relationships because they are the consequences of shared decisions and actions. Therefore, effective solutions to such problems must emerge from networks as a joint, rather than an individual effort. A network approach offers a variety of meaningful indices to investigate interpersonal conflict, which is the central theme of the present study. First, conflict density refers to the number of interactions within the network that are characterized as conflict-ridden. Research has shown that high conflict density has negative effects on the psychological health of the network members (Widmer et al., 2018). However, family relationships seldom consist of conflicts exclusively; rather, they are related to support relationships, which is expressed in ambivalence (Aeby et al., 2020). Ambivalence refers to the ongoing negotiation of obligations, expectations, and autonomy within family ties, which is an inherent part of how families organize themselves (Connidis, 2015). Second, conflict reciprocity indicates that a negative behavior toward a network member is actively reciprocated with a negative response. High conflict reciprocity refers to networks where conflicts are intense. Conflict reciprocity usually occurs in more intimate relationships. In marital relationships, for instance, conflict reciprocity is associated with aggression, dissatisfaction, and distress (Ramos Salazar, 2015). However, intense conflicts may also reflect the effort to maintain relationships in times of acute stress, which prevents groups from dissolution (Coser, 1956). Third, centrality is a measure that indicates to what extent an individual plays a central role in conflicts. High centrality within conflict relationships suggests that an individual is in active oppos- ition to significant network members (Widmer et al., 2018) and is considered a common enemy within that network (Everett & Borgatti, 2014). Individuals with a high centrality likely play a critical part in the diffusion of negative tensions and feelings in networks Fellmann 551 (Bowen, 1993). Research has shown that high centrality of individuals in family conflicts is associated with stress and poorer psychological health (Widmer et al., 2018). Family intervention In family interventions, practitioners establish working relationships with several individuals who are part of the intervention (e.g., parents, children, and grandparents). Each relationship between the practitioner and a family member is unique but also mutually dependent. For example, social workers who work with family members dealing with strong disputes describe their intermediary position as highly challenging due to the risk of getting involved in a loyalty conflict (Sudland, 2020). From a relational standpoint, family interventions are complex and demanding because practitioners must create trusting working relationships with several family members who are connected through ambivalent ties. However, the rela- tionship between the practitioner and the family members who are involved in the interven- tion is the main mechanism for conflict resolution. According to Bowen’s (1993) family systems theory, the tensions that arise from a conflict between two individuals can be relieved via the principle of “triangulation”. When two family members are in conflict, the practitioner can reduce the tension by establishing a trusting relationship with both parties. By doing so, the practitioner transforms the dyadic relationship of the two conflicted family members into a triad, thereby relieving the stress. In families that are enrolled in inter- ventions, numerous dyadic conflicts are often present. Therefore, practitioners are a part of various interlocking triads. Additionally, a trusting relationship with network members is important because it promotes the development of a shared attitude toward the family inter- vention within the larger social context of a family. The involvement of network members stimulates the communication in the network in favor of the goals and actions of the inter- vention (Perry et al., 2016). Hypotheses In light of the proposed network approach, it is expected that a trusting relationship between the practitioner and the individuals involved in the family intervention will have a decreasing effect on threemanifestations of interpersonal conflicts in the personal network of the parents. A trusting working relationship is expected to (1) decrease the number of interactions in the personal network of the parent that are associated with conflicts (conflict density), (2) lower the number of intense conflicts (conflict reciprocity), and (3) decrease the centrality of parents in interpersonal conflicts (betweenness centrality of the parent). Data and measurement Data collection and participants Data for the present study were collected in two waves from the German speaking part of Switzerland using paper-and-pencil questionnaires. Access to the families was facilitated by 18 service providers of Social Pedagogical Family Support—the most frequently used 552 Journal of Social Work 23(3) home-based service in the Swiss child welfare system (Wetzel et al., 2020). This service includes parent counseling, joint reflections and discussions with the family, and activ- ities with children. Common goals of this type of intervention are the development of par- enting skills, promotion of children’s competencies in various domains, and resolution of parent–child conflicts (Messmer et al. 2021). The service providers were instructed to invite every family that was referred to their service between June 2018 and April 2019 to participate in the study. The data collection included a questionnaire for the parents and another one for the practitioners (hereafter called social pedagogues). The parents provided information about their personal network, and the social pedagogues about the family intervention. Each party filled in a questionnaire at the start of the inter- vention and a second one about 6 months later. The social pedagogues who were per- forming the home visits collected the data for the first and second wave. On average the questionnaires for wave one were filled in during the fourth home visit (M= 4.12, SD= 1.8). All parents who agreed to participate signed an informed consent form that outlined the responsibilities of each party in the study. In total, 70 parents were inter- viewed in the first wave. However, 24 dropped out of the study before the start of the second wave, 13 dropped out because the intervention was terminated, 6 refused to par- ticipate in the second wave, and 5 did not complete the second questionnaire. No signifi- cant differences were found concerning the network size and conflict variables between the parents who dropped out and the final sample, which consisted of 46 parents. The average duration between the first and the second assessment was 198.4 days (SD= 32.3), during which the social pedagogues visited the families on average 29.3 times (SD= 14.0) for 114.4 min (SD= 35.4) per home visit. Slightly more than one-third of the parents (39.1%) were mandatorily referred to the family intervention, while the others agreed to it. Fathers and mothers comprised 13.0% and 87.0% of the sample, respectively, of which 47.8% were single parents. The average age of the parents at the start of the intervention was 35.2 years (SD= 8.0). The number of children per family was 2.2 (SD= 0.9) with an average age of 9.2 years (SD= 5.6). More than half of the parents were Swiss citizens (56.5%); 54.3% was unemployed and 60.9% received social welfare benefits. Furthermore, 37% of the parents did not have vocational educa- tion and 15.2% only had minimal German language skills. Additionally, almost one-third of all parents (32.6%) reported that they had been diagnosed with a mental illness. The socioeconomic and health-related characteristics reveal that the parents in this sample were affected by multiple disadvantages. Measurement Information about the parents’ personal networks was collected using the Personal Network Method (PNM). This validated instrument allows the collection of ego-centric network data (Widmer et al., 2013). Respondents are asked to list a maximum of 14 indi- viduals who are important to them based on the following question: Who are the indivi- duals who, over the past year, have been very important to you, even if you have not gotten along well with them? The respondents then provided information about not only their relationships to the listed individuals (e.g., relationship type, frequency of Fellmann 553 contact) but also the individuals themselves (e.g., age, sex). Lastly, respondents were asked to provide information about the conflictual relationships in their personal network considering ego-alter and alter-alter relationships as follows: Conflicts and ten- sions appear in every relationship from time to time; who upsets whom frequently? This data allows the computation of structural network measures such as density, reciprocity, or centrality and to draw graphical representations of personal networks (Crossley et al., 2015). The family intervention was documented with a second paper-and-pencil question- naire that was completed by the social pedagogue who conducted the intervention. During the second assessment, the social pedagogues not only examined the parents’ list of personal network members and indicated the ones they involved since the begin- ning of the intervention but also indicated the frequency of contact and level of mutual trust separately for each involved network member. Dependent variables. The effects of the family intervention on interpersonal conflicts were analyzed using three different sets of personal network members. The first set, the respon- dents’ in-neighborhood, contained only the network members who directly upset the respondent. The second set, the out-neighborhood, included only network members who were directly upset by the respondent. Finally, the third set, the full network, consid- ered all members of the respondents’ personal network. Within these network sets, the following measures were computed and transformed to change scores (t1–t0): Conflict density: The conflict density is the number of actual ties in a network divided by the total possible number of its ties. Hence, the density measure has a value between 0 and 1. For the in-neighborhood subset, the density measure considered only the number of possible ties between the network members who directly upset the respondent (includ- ing the respondent); and vice versa for the out-neighborhood subset, with higher conflict density indicating a denser pattern of interactions between network members that are associated with conflict. Conflict reciprocity: Conflict reciprocity measures the fraction of reciprocated ties over all actual ties, which is technically known as “arc reciprocity”. The value ranges between 0 and 1, with higher values indicating the presence of more conflict reciprocity in the network. Betweenness centrality: The betweenness centrality counts how often a node lies on the shortest path between two nodes. Its standardized measure ranges between 0 and 1, with higher values indicating a more central position in a set of interpersonal conflicts. Independent variables. Intervention effects on these conflict measures were analyzed using multiple linear regression models. The models contain three independent variables: (1) the level of mutual trust, (2) the frequency of contact between the social pedagogue and the respondents’ network members, (3) the percentage of the respondents’ network members involved in the intervention—and the baseline score of the dependent variable as a control variable. The independent variables consider only the ties between the social pedagogue and the respondent’s network members, without including the working 554 Journal of Social Work 23(3) relationship with the respondent. Therefore, the intervening variables can be interpreted more clearly as the effects of involving the respondent’s personal network. The level of mutual trust between the social pedagogue and the network members was rated by the former during the second assessment using the following question: How strong do you rate the mutual trust between you and the network member? The social pedagogue rated the level of trust for every network member who was involved separ- ately on a 5-point scale (very low, low, mediocre, strong, and very strong). For the regres- sion analysis, the mean score of all network members involved in an intervention was calculated. Frequency of contact between the social pedagogue and the network members was also measured separately for every network member involved, rated on a 7-point scale (once during the past 6 months, several times during the past 6 months, once a month, several times a month, once a week, several times a week, and daily). Frequency of contact covered face-to-face as well as telephone- or internet-based contact (How fre- quently did you have contact with the network member?). Analogous to the level of mutual trust, the mean score of all network members per case was used for the regression models. Network involvement was measured by calculating the percentage of members of the respondents’ personal network who were included in the intervention by the social peda- gogue between its start and the second assessment. Finally, the baseline score of the dependent variable was included as an independent variable to control for the regression toward the mean effect (Allison, 1990). This effect describes the phenomena of extremely low or high values at a given time being closer to the average of the sample at the following measurement point. Thus, the baseline value in the regression models is expected to be negatively associated with the dependent vari- ables. It is important to stress that the effects of the baseline value should not be inter- preted as intervention effects. Graphical representation of personal networks and the intervention Figures 1 and 2 present a visualization of the independent and dependent variables included in the regression models, respectively. Figure 1 shows the personal network of a mother (focal individual) with a daughter (aged 6) and a son (aged 11) at the start of the intervention (t0) and roughly 6 months later (t1). The edges in the network represent conflicts between its members. The personal network at t0 consists of nine members including the mother, her two children, two sisters, two friends, ex-husband, and a neighbor. Five out of these nine network members are involved in conflicts. The arrows imply the direction of the conflicts. For instance, the focal individual frequently upsets both of her children and her ex-husband, while her son and her ex-husband fre- quently upset the focal individual. At the second assessment (t1), changes in the network size, composition, and structure can be detected. The network now consists of seven members instead of nine, with the focal individual listing both of her children, her neighbor, and one of her sisters who were all present in the network at t0. However, the ex-husband, the two friends, and one sister are no longer listed. Instead, Fellmann 555 her new partner and the mother of the new partner are now part of the personal network. Regarding the structural changes, the daughter is not involved in conflicts anymore. The new partner and his mother, neither of whom were not in the network at t0, now upset the son frequently. The neighbor, who was not involved in conflicts at the first assessment, now regularly upsets the new partner of the focal individual. Figure 2 shows that, in this case, the social pedagogue involved the daughter, son, and partner of the focal individual in the intervention. Hence, the neighbor, the sister, and the mother of the new partner were not involved. Regarding the frequency of contact with the network members, this figure indicates that the social pedagogue had slightly more Figure 1. Graphical representation of interpersonal conflicts at the start of the intervention (t0) and 6 months later (t1). Note: Interpersonal conflicts at t0: network size= 9, in-neighbourhood size= 3, out-neighbourhood size= 4, conflict density= 0.11, betweenness centrality of ego= 0.09, conflict reciprocity= 0.75. Interpersonal conflicts at t1: network size= 7, in-neighbourhood size= 2, outneighbourhood size= 2, conflict density= 0.17, betweenness centrality of ego= 0.00, conflict reciprocity= 0.57. Figure 2. Graphical representation of frequency of contact, level of mutual trust, and network involvement. 556 Journal of Social Work 23(3) contact with the daughter than with the son and the new partner of the focal individual during the first 6 months of the intervention, during which the highest level of mutual trust was developed between the social pedagogue and the daughter, followed by the partner and the son. Overall, the frequency of contact as well as the level of mutual trust with personal network members is rather low, when considering the measurement scales. Results Table 1 shows the mean scores and the SDs of the dependent variables used in the regres- sion models at the start of the intervention and the size of each network set. The in-neighborhood subset, comprising all individuals who directly upset the respondent, primarily includes the respondent’s children, parents, siblings, partner, and ex-partner(s). The most frequently named network members who are directly upset by the respondent are their children, parents, siblings, and partner. The entire network also consists predom- inantly of ties that were mentioned in the first two subsets, with the addition of friends, in-laws, and kin. According to Table 1, conflict density is substantially higher when only individuals who directly upset the respondent are included and vice versa. Not only conflict density but also respondents’ centrality in interactions associated with con- flict is higher in the in- and out-neighborhood set in comparison to the entire network. However, the conflict reciprocity measure shows that the intensity of conflicts is almost equal in all the network sets, indicating that roughly half of the conflict relation- ships are reciprocal. Table2shows the frequencyofcontact and the levelofmutual trustbetween the socialpeda- gogue and the network members between the start of the intervention and the second assess- ment.When considering all 46 cases included in the sample, the social pedagogues involved a total of 144networkmembers (not counting the respondents). Thus, 3.12 (SD= 1.42) network members on average, which is 46.7% (SD= 26.1%) of the network members, were involved. The level of mutual trust was unrateable in 10 cases due to the young age of some children or other reasons (n= 134). The results in Table 2 are categorized by the network members who Table 1. Descriptive statistics of conflict measures at the start of the intervention. Alters who upset the focal individual Alters who are upset by the focal individual All network members of the focal individual M SD M SD M SD Size of the network set 3.70 2.13 3.20 2.28 8.98 3.38 Conflict density 0.54 0.32 0.50 0.40 0.21 0.22 Conflict betweenness centrality 0.20 0.30 0.16 0.25 0.07 0.13 Conflict reciprocity 0.52 0.45 0.54 0.45 0.55 0.36 Fellmann 557 were most involved: the current partner, ex-partner, children, and parents. The category “others” contains all other network members who did not fit in one of the existing categories. The social pedagogues had most frequent contact with the respondents’ children (M= 4.16). They also rated the level of mutual trust with children the highest (M= 3.46) compared to the other groups. The contact frequency with the current partner or the ex-partner is similar (M= 2.95/3.14), but themutual trust was rated higher between the social pedagogue and the current partner (3.32) thanwith the ex-partner (M= 2.86).The lowest contact frequency is between the social pedagogues and the respondents’ parents and with the heterogeneous group “others” (M= 2.18). However, the level of mutual trust is higher in the latter case (M= 3.36). Spearman correlations were performed between the baseline scores of the conflict measures and the intervention variables (Table 3). Spearman’s rho coefficient indi- cated a moderate positive correlation between the frequency of contact and the level of mutual trust between the social pedagogues and the network members (rs= 0.33, p= .023, n= 46) and a negative association between the level of trust and the baseline score of out-neighborhood betweenness centrality (rs=−0.32, p= .028, n= 46). Due to their moderate strength, these two significant correlations do not violate the rule of multicollinearity. In line with other research (Sapin et al., 2016), numerous conflict measures are positively intercorrelated within and between the three network sets; because they are used in separate regression models, they do not violate the rule of multicollinearity. To analyze the effects of the family intervention on the interpersonal conflicts in the respondents’ personal networks, a series of linear multiple regression models were tested (Table 4). The level of mutual trust shows the expected effect of lowering conflicts in per- sonal networks across various measures. Higher levels of mutual trust with network members significantly decrease conflict density and conflict reciprocity in all three network sets. No effects regarding the centrality of the focal individual in interpersonal conflicts were observed. Table 2. Relationship attributes between the social pedagogues and network members at t1. Frequency of contact between the social pedagogue and network members of the focal individual (7-point scale) Level of mutual trust between the social pedagogue and network members of the focal individual (5-point scale) M SD M SD Partner (n= 19/19) 2.95 1.31 3.32 0.75 Children (n= 90/84) 4.16 1.27 3.46 0.84 Ex-partner (n= 7/7) 3.14 1.21 2.86 0.90 Parents (n= 11/10) 2.18 1.47 2.80 0.79 Others (n= 17/14) 2.18 1.38 3.36 0.84 Total (n= 144/134) 3.56 1.52 3.35 0.84 558 Journal of Social Work 23(3) T ab le 3. Sp e ar m an co rr e la ti o n s o f b as e lin e sc o re s o f th e co n fl ic t m e as u re s an d in te rv e n ti o n va ri ab le s. 1 2 3 4 5 6 7 8 9 1 0 1 1 IN d e n si ty 1 IN b e tw e e n n e ss ce n tr al it y .1 7 0 1 IN re ci p ro ci ty .7 8 4 ∗∗ ∗ .6 2 6 ∗∗ ∗ 1 O N d e n si ty .7 2 4 ∗∗ ∗ .2 4 4 .6 7 5 ∗∗ ∗ 1 O N b e tw e e n n e ss ce n tr al it y .2 2 1 .8 9 6 ∗∗ ∗ .6 2 8 ∗∗ ∗ .1 0 4 1 O N re ci p ro ci ty .6 4 7 ∗∗ ∗ .4 9 1 ∗∗ ∗ .7 6 6 ∗∗ ∗ .8 9 1 ∗∗ ∗ .4 0 6 ∗∗ 1 F N d e n si ty .5 4 2 ∗∗ ∗ .2 9 3 ∗ .5 9 9 ∗∗ ∗ .5 0 7 ∗∗ ∗ .3 3 3 ∗ .5 3 7 ∗∗ ∗ 1 F N b e tw e e n n e ss ce n tr al it y .1 6 3 .8 8 4 ∗∗ ∗ .5 6 0 ∗∗ ∗ .2 2 4 .8 3 4 ∗∗ ∗ .4 3 9 ∗∗ .4 5 2 ∗∗ 1 F N re ci p ro ci ty .5 7 6 ∗∗ ∗ .4 0 1 ∗∗ .6 9 5 ∗∗ ∗ .5 9 1 ∗∗ ∗ .4 1 5 ∗∗ .6 8 8 ∗∗ ∗ .3 9 2 ∗∗ .3 6 2 ∗ 1 IN T fr e q u e n cy o f co n ta ct .1 6 3 .0 6 6 .1 6 1 .1 1 4 .0 7 1 .0 2 3 .2 0 4 .1 1 3 .0 3 1 1 IN T le ve l o f m u tu al tr u st .1 2 7 -. 2 6 4 -. 0 7 0 .1 4 4 -. 3 2 4 ∗ .0 0 1 .1 9 1 -. 2 4 0 -. 0 8 3 .3 3 4 ∗ 1 IN T n e tw o rk in vo lv e m e n t − .0 6 5 − .0 3 3 − .1 0 4 − .1 3 5 .0 1 6 − .1 8 0 .1 3 1 .0 5 8 − .1 9 7 .0 8 3 .2 3 7 N ot e. F N = fu ll n e tw o rk ; IN = in -n e ig h b o rh o o d , IN T = in te rv e n ti o n ; O N = o u t- n e ig h b o rh o o d . ∗ p ≤ .0 5 , ∗∗ p ≤ .0 1 , ∗∗ ∗ p ≤ .0 0 1 . Fellmann 559 Contrary to the level of mutual trust, the frequency of contact with network members has the opposite effect on interpersonal conflicts. High contact frequency is associated with increased conflict density in all three network sets. However, significant effects on conflict reciprocity can only be reported in the in-neighborhood model. Of less importance is the percentage of network members involved in the family inter- vention. Network involvement increases conflict density, but only in the entire network. Therefore, involving more network members increases the likelihood of negative ties between alters in the personal network of the focal individual during the intervention. Discussion This research hypothesized that a trusting working relationship between practitioners and the personal network members of parents in a family intervention is associated with a Table 4. Multiple linear regression models predicting changes in conflict measures between t0 and t1. Alters who upset the focal individual Alters who are upset by the focal individual All network members of the focal individual B SE B SE B SE Conflict density (DV) Frequency of contact 0.154∗∗∗ 0.040 0.100∗ 0.048 0.054∗ 0.021 Level of mutual trust −0.243∗∗ 0.080 −0.213∗ 0.097 −0.087∗ 0.041 Percentage of network members involved 0.159 0.171 0.418 0.207 0.183∗ 0.088 Baseline score of the dependent variable −0.707∗∗∗ 0.140 −0.904∗∗∗ 0.135 −0.543∗∗∗ 0.112 Conflict betweenness centrality (DV) Frequency of contact −0.001 0.032 −0.020 0.027 0.021 0.013 Level of mutual trust −0.071 0.066 −0.054 0.058 −0.042 0.026 Percentage of network members involved 0.043 0.135 −0.002 0.116 −0.009 0.055 Baseline score of the dependent variable −0.920∗∗∗ 0.121 −0.935∗∗∗ 0.127 −0.878∗∗∗ 0.109 Conflict reciprocity (DV) Frequency of contact 0.146∗∗ 0.051 0.085 0.055 0.038 0.042 Level of mutual trust −0.279∗∗ 0.101 −0.281∗ 0.111 −0.196∗ 0.083 Percentage of network members involved 0.343 0.215 0.421 0.242 0.170 0.181 Baseline score of the dependent variable −0.802∗∗∗ 0.127 −0.950∗∗∗ 0.139 −0.695∗∗∗ 0.131 Note. DV= dependent variable. ∗p≤ .05, ∗∗p≤ .01, ∗∗∗p≤ .001. 560 Journal of Social Work 23(3) decrease in various conflict measures. The results presented in Table 4 generally confirm this hypothesis while also providing further insights into how interpersonal conflicts are impacted by a family intervention. Mutual trust between practitioners and network members is associated with a signifi- cant decrease in conflict density and conflict reciprocity. Hence, network members are less affected by internal conflicts in the medium term when a trusting relationship is developed with the social pedagogue. Lower conflict density implies less negative valences in personal networks, which are associated with a less stressful environment for the network members (Widmer et al., 2018). In this regard, research suggests that lower conflict density decreases the likelihood of emotional insecurity of children about family relationships and developmental problems (Cummings et al., 2015). The results related to conflict reciprocity complement these findings. A trusting working relationship between practitioners and network members has a calming effect on intense conflicts. One reason for this could be that the members of the personal network developed better communication skills, which is a common goal in this type of family intervention. The lack of such skills is a common cause for conflict reciprocity (Ramos Salazar, 2015). Ethnographic observations of home visits have shown that practi- tioners who simultaneously work with several family members are more successful in stimulating collective and more self-sufficient communication about conflicts (Messmer et al. 2021). However, these effects could also be attributed to the presence of the practitioner, who may have become a significant member of the respondent’s per- sonal network during the intervention. This would indicate that the network members were not able to deal with interpersonal conflicts themselves and so preferred to integrate the practitioner in their conflict-solving practices. In this regard, qualitative research would help provide an in-depth understanding of the relationship between the role of the practitioner and the patterns of interpersonal conflicts in families. Studies with post- intervention measures report different findings regarding the sustainability of conflict indicators. A study by Lewis (2005) showed that positive achievements of an intensive short-term intervention were maintained 8 to 10 months after the intervention. The study reported that family members were screaming less at each other and experienced less anger. Furthermore, parents preserved their improved skills of handling children when they yell or swear. In contrast, a study that also investigated a short-term family intervention reported no significant changes in parent–child conflicts after its completion (Al et al., 2014). No effects of mutual trust were detected on the centrality of respondents’ in interper- sonal conflicts. This indicates that a trusting working relationship with network members affects the conflict dynamics in personal networks but does not affect the structural pos- ition of the focal individual. In this regard, research has shown that many practitioners put the parents at the centre of social pedagogical family interventions (Messmer et al., 2021). This could have the effect of parents remaining in the position of control, having to manage conflicts and tensions. Higher levels of centrality indicate that parents are simul- taneously involved in conflicts with several individuals or groups. Being in such a pos- ition in conflict networks not only makes parenting more demanding and stressful because of the need to moderate several conflicts but also makes parents a target of Fellmann 561 hostility and criticism. Research has shown that individuals who play a central role in family conflicts are more likely to be affected by higher levels of distress (Sapin et al., 2016). In contrast to the positive effects of mutual trust, a high frequency of contact with network members did not release tensions in personal networks of parents. This result is in line with other research in the field of family interventions. A study by Littell (1997) revealed that a higher intensity of family preservation services was associated with an increase in the recurrence of child maltreatment and higher rates of out-of-home placements. According to the author, this could be related to the fact that intensive inter- ventions were especially provided to high-risk families, which anyway had only a small likelihood of success. As research has shown, home visits can be perceived as intrusive by family members and can cause distress (Cook, 2020). Having frequent contact with network members could trigger several conflicts simultaneously, resulting in higher con- flict density within the network due to the clashing of interests of several individuals. As a matter of fact, frequency of contact is not a crucial factor for the establishment of mutual trust. High congruence regarding the intervention goals and expectations between family members and the practitioner, the practitioner’s emphatic communication style, and a working relationship that is on an equal footing are some of the more important factors (Rüegger et al., 2021). In comparison to mutual trust and frequency of contact, the percentage of network members involved in the family intervention barely affects interpersonal conflicts. This result suggests that resolving a specific conflict within a network may have a positive effect on conflicts between other network members. This indicates that the positive effects of mutual trust might be diffused within the personal network and stop further chains of conflicts (de Bel et al., 2021). Limitations of the study The present research has several limitations that should be discussed. One major limita- tion is the measurement to capture the level of mutual trust, which only represents the view of the social pedagogue. As the term “mutual” implies, a trusting relationship involves the social pedagogue’s and the service user’s perspective on this matter. Therefore, it is possible that the network members involved in the family intervention may have rated the level of trust differently. The second limitation concerns the exclusive focus on conflicts. Research has shown that the occurrence of solely negative ties in family networks is rather rare. Personal networks consist of positive and negative ties, resulting in ambivalent relational patterns (Widmer, 2010). Research suggests that ambivalent relationships cause more distress than do exclusively conflicted ties (Uchino et al., 2004). Ambivalence emerges in a variety of patterns associated with dif- ferent levels of psychological distress (Aeby et al., 2020; Sapin et al., 2016). Therefore, future studies should consider both positive and negative ties in their research designs. The third limitation of this study is the sample size, which is rather small (n= 46). A small sample size increases the likelihood of not accounting for small effects (type II error). Finally, it would be beneficial to include postintervention data to examine 562 Journal of Social Work 23(3) whether changes in interpersonal conflicts are due to the presence of the social pedagogue or whether they are sustainable. Conclusions and practical implications This study contributes to family intervention research by adopting a unique network approach, which offers novel findings about intervention effects. The proposed approach stresses the importance of considering the diversity of personal ties and their larger social contexts in family interventions. The results reveal that the level of mutual trust between practitioners and the individuals involved in a particular family intervention differs con- siderably. This highlights the uniqueness of each relationship when working with several network members. The results suggest that practitioners must establish mutual trust with not only parents but also other individuals to promote a less stressful family environment. A network approach takes the role of the practitioner in family interventions into account. In this regard, it encourages practitioners to promote conflict resolution capacities of fam- ilies instead of becoming a permanent and indispensable part of conflict resolution prac- tices. The characteristics of the study sample reveal that many families are affected by larger structural inequalities. Because interpersonal conflicts are often associated with socioeconomic disadvantages, practitioners should also support families in gaining access to services that address pressing socioeconomic needs. Ethics Ethical approval was not required for this research. However, the study participants signed an informed consent form with detailed information about the study and the rights and responsibilities of each party involved. Funding The author disclosed receipt of the following financial support for the research, authorship, and/or publication of this article: This work was supported by the Swiss National Science Foundation (grant number 172598). Acknowledgements The author would like to thank Professor Eric D. Widmer for his valuable feedback on the manuscript. ORCID iD Lukas Fellmann https://orcid.org/0000-0002-9687-1577 References Aeby, G., Gauthier, J-A, & Widmer, E. D. (2020). Patterns of support and conflict relationships in personal networks and perceived stress. Current Sociology, 69(7), 1–21. https://doi.org/10. 1177/0011392120948926 Fellmann 563 https://orcid.org/0000-0002-9687-1577 https://orcid.org/0000-0002-9687-1577 https://doi.org/10.1177/0011392120948926 https://doi.org/10.1177/0011392120948926 https://doi.org/10.1177/0011392120948926 Al, C. M. W., Stams, G. J. J. M., Asscher, J. J., & van der Laan, P. H. (2014). 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https://doi.org/10.1177/0265407506070482 https://doi.org/10.1080/03906700701356861 https://doi.org/10.1080/03906700701356861 https://doi.org/10.1080/03906700701356861 https://doi.org/10.1080/03906701.2013.771049 https://doi.org/10.1080/03906701.2013.771049 https://doi.org/10.1177/0192513X17714507 https://doi.org/10.1177/0192513X17714507 https://doi.org/10.1093/esr/20.1.63 https://doi.org/10.1093/esr/20.1.63 Introduction The importance of trusting working relationships for conflict resolution A network approach to evaluating family interventions Personal network Family intervention Hypotheses Data and measurement Data collection and participants Measurement Dependent variables Independent variables Graphical representation of personal networks and the intervention Results Discussion Limitations of the study Conclusions and practical implications Acknowledgements References folder.joboptions << /ASCII85EncodePages false /AllowTransparency false /AutoPositionEPSFiles true /AutoRotatePages 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