Individuals with a criminal background are increasingly involved in support for people with criminal behavior. However, research into what happens in the relationship between these experiential peers (EPs) and clients is scarce. This qualitative study investigates EPs' perspectives on the mechanisms of experiential peer support and how this compares to regular support by care providers without lived experiences. We interviewed seventeen EPs who provided support to young people with criminal behavior. The results suggest that shared experiences between EPs and their clients play a central role. EPs identify with their clients, leading to empathy and a non-judgmental attitude. Clients seem to perceive EPs as credible role models who offer hope. EPs' lived experiences seem to induce a realistic view of desistance and an emphasis on a humane relationship with their client, which is characterized by equality, reciprocity, trust and sincerity. This recovery-oriented approach towards criminal behavior and desistance could also be utilized by non-EPs. Future research should investigate others' perspectives on and experiences with experiential peer support, in particular those of clients and co-workers.

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Background Experiential peers are increasingly involved in the development and delivery of interventions for individuals who are engaged in delinquent behavior. Experiential peer support, which is the provision of support to an individual engaged in delinquent behavior by someone who has previously also practiced such behavior, is one such application. Little is known, however, about its effects on desistance, or the mechanisms that explain these effects. On the basis of theoretical papers, program descriptions, and interviews with experts, we developed an initial program theory. We propose seven mechanisms that might play a role in the (potential) effects of support by experiential peers: (1) empathy and acceptance, (2) social learning, (3) social bonding, (4) social control, (5) narrative and identity formation, (6) hope and perspective, and (7) translation and connection. In addition, in this protocol paper, we describe the methods of a systematic realist literature review that will be conducted in order to investigate the evidence base for this program theory. Methods The study described in this protocol paper is a realist review, which is a suitable approach to study complex interventions and fits the explanatory purpose of the study. We outline the steps to be taken for the systematic realist review, including the selection and assessment of studies and the methods for synthesizing the findings. Discussion Investigating the effects and the underlying mechanisms of support by experiential peers for individuals with delinquent behavior is relevant because the forensic setting has some unique features, and the involvement of service users might create even more tension than in other settings due to stigma and perceived risks. The findings that will be reported in the realist review will contribute to the knowledge of the effects of support by experiential peers and will provide insight into which aspects remain to be studied. It might also provide formal care institutions with guidance on whether to involve experiential peers in the delivery of their services and the conditions under which these interventions are likely to lead to positive results. Electronic supplementary material The online version of this article (10.1186/s13643-019-1036-2) contains supplementary material, which is available to authorized users.

Research on youth mentoring highlights the importance of the relationship quality between mentor and mentee; mentoring results in more positive outcomes when the mentee perceives the relationship as satisfying and trustworthy. Research on relationship quality shows that social skills are important for constructing new relationships. However, whereas improved social skills are often one of the main goals of youth mentoring, little is known about the importance of social skills for relationship quality in youth mentoring relations. In this study, we examined whether mentee's pre‐intervention social skills were related to mentor–mentee relationship quality as perceived by the mentee, and in turn, if relationship quality was associated with post‐intervention social skills. We additionally examined possible gender and age differences in these associations. Data were used from a two‐wave study that assessed relationship quality and social skills before and after one semester of mentoring of 390 secondary school students in a school‐based mentoring program. Results indicated that relationship quality was positively associated with post‐intervention social skills. However, only for young mentees pre‐intervention social skills were associated with better relationship quality. Moreover, only for young mentees, relationship quality mediated the association between pre‐ and post‐intervention social skills.

Closeness between mentor and mentee is previously defined as an important indicator of relationship quality in youth mentoring, but whether this is the case in instrumental mentoring for young adults remains unclear. This is an exploratory study examining how instrumental mentoring serves young adults in their instrumental needs and how relational closeness develops. We applied a mixed-methods design, using quantitative data from a study of an instrumental mentoring program in Rotterdam, The Netherlands ( N = 53), and qualitative data from a subsample of participants ( N = 10). Two statistically distinctive clusters of closeness were found; 49% of the mentees reported high levels of closeness, and 51% reported low levels of closeness in their mentor relationship. Multivariate analyses of variance (MANOVAs) showed that the cluster with high levels of closeness was correlated with instrumental compatibility, satisfaction, and perceived attitude similarities. Semi-structured interviews were used to illustrate the role and development of closeness for mentees in both clusters, and three cases were presented. Experiencing closeness seemed a result of receiving instrumental support, not a precondition. Mentees’ previous experiences might in some cases explain the lower levels of closeness, but this did not always hinder mentees to profit from their mentors’ support.

Young adulthood is characterized by many life changes. Especially for young men with problems across different life domains (i.e., multi-problem), these changes may entail obstacles. Incidences of psychopathology increase during young adulthood and at the same time important shifts in social networks – such as changing relations with peers and parents, isolation, or deviant peer affiliation – take place. The present study examined the longitudinal interplay between psychopathology and social network characteristics over the course of 1 year in multi-problem young adults, at both between-person and within-person level. A sample of 696 multi-problem young adult men (age 18–27) participated in this three wave study. We used traditional cross-lagged panel models (CLPM) to examine how social network characteristics and psychopathology are related at the between-person level, and random intercept cross-lagged panel models (RI-CLPM) to examine within-person links. Between-person associations between internalizing problems and social networks were bidirectional, and externalizing problems were related to problematic social network characteristics, but not vice versa. At the within-person level, no such cross-lagged paths were found. Overall, results indicated that in multi-problem young adults, social network characteristics and psychopathology are related. However, looking at within-person processes this relation is not reciprocal.

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