Systemic · 1990
Multisystemic Therapy (MST)
Change becomes stable when the family, the school, the peer group and the community stop sustaining the problem and start reinforcing a prosocial life.
Multisystemic Therapy (MST) is an intensive, home-based, evidence-based treatment for adolescents with severe antisocial behaviour and a high risk of institutionalisation. It approaches the problem as an ecological phenomenon maintained by the interaction of multiple systems (family, school, peers, community and institutions); the therapist intervenes in the young person's real context with high availability and an orientation towards measurable objectives, empowering caregivers as agents of change, modifying parenting practices and everyday contingencies, reducing exposure to antisocial peers, improving school performance and actively coordinating with juvenile justice and social services, so that change is consolidated when the family system acquires enough supervision, limits, communication and support to maintain prosocial routines and prevent relapse (Refs: Henggeler 1997; Henggeler et al. 1998/2009; Bronfenbrenner 1979).
Theory of change
The adolescent changes when their everyday systems stop reinforcing antisocial behaviour and start sustaining stable prosocial patterns.
Core ideas
-
Antisocial behaviour is an ecological phenomenon
Severe antisocial behaviours are understood as the result of the interaction between multiple interdependent systems — family, school, peers, community and institutions — and not as an isolated individual trait. Any effective intervention must act on these systems simultaneously in order to alter the contingencies that maintain the problem. (Henggeler, 1997; Bronfenbrenner, 1979).
-
The family is the principal agent of change
Strengthening caregivers — especially in supervision, limit-setting and consistency — constitutes the central lever for sustaining change. When the family recovers its capacity for everyday monitoring and regulation, opportunities for risk decrease and the adolescent's behavioural stability increases. (Henggeler et al., 1998/2009).
-
Change requires modifying real contingencies
Therapeutic progress is explained by concrete alterations in the environment: reduced contact with antisocial peers, increased supervision, improved school performance and access to prosocial activities. Insight is not enough; change is consolidated when the conditions that reinforce the problem behaviour change. (Henggeler, 1997).
-
The intervention must take place in the natural context
Working in the home and in everyday settings makes it possible to intervene on the real dynamics in which the problem behaviour is maintained. Acting in the natural environment facilitates immediate generalisation and evaluation based on observable outcomes. (Henggeler et al., 1998/2009).
-
Inter-agency coordination is part of the treatment
School, juvenile justice and community services are not external factors but active systems that influence the adolescent's trajectory. Aligning objectives and reducing institutional friction is an essential part of the change process. (Henggeler, 1997).
-
Objectives must be measurable and verifiable
Therapeutic effectiveness is assessed through concrete indicators such as reoffending, school attendance, compliance with rules and reduction of incidents. The constant formulation and review of observable goals guarantees coherence between theory and intervention. (Henggeler et al., 1998/2009).
-
Therapeutic intensity and availability are strategic
The high frequency of contact, availability during crises and structured weekly planning make it possible to respond rapidly to escalation and to maintain continuity of the process, reducing the risk of institutionalisation and dropout. (Henggeler, 1997).
-
Empirical evidence guides the design of the treatment
The organisation of the work, the clinical principles and the supervision of the team derive from controlled research and the systematic evaluation of outcomes, integrating ecological theory and practice based on observable data. (Henggeler et al., 1998/2009).
Key references
- Henggeler, S. W. et al. (1998/2009). Multisystemic Treatment of Antisocial Behavior in Children and Adolescents.
- Henggeler, S. W. (1997). Multisystemic Therapy for Delinquent and Antisocial Youth.
- Bronfenbrenner, U. (1979). The Ecology of Human Development.