Collaborative Therapy vs Open Dialogue

Collaborative Therapy

Tradition

Humanistic

Founder

Harlene Anderson / Harold Goolishian (1988)

Review status

Assessment not yet completed

Focus

Relational + Insight

Format

Individual, couples, family, group

Duration

Variable; often brief to medium

Open Dialogue

Tradition

Postmodern

Founder

Jaakko Seikkula (1995)

Review status

1 condition assessment available

Focus

Dialogical + Network

Format

Network (family + social)

Duration

Variable (crisis-oriented)

Condition-specific assessments

Each conclusion applies to the population and use described. These source-based assessments do not certify the full entry or replace expert clinical review.

Psychosis & Schizophrenia Spectrum

Population and scope: First-episode nonaffective psychosis treated in the Western Lapland service model.

Limited evidence

Psychosis-specific evidence checked here is observational: Seikkula 2006 compared historical cohorts with no significant five-year overall outcome difference. The completed 2026 ODDESSI randomized trial involved transdiagnostic crisis presentations and found no primary relapse benefit; its psychosis-specific result was not verified. Its existence corrects the ongoing-trial narrative but must not automatically upgrade psychosis-specific evidence.

Source assessment dated 2026-09-08

• Seikkula et al. (2006): Five-year outcomes of first-episode nonaffective psychosis in Open Dialogue
• ODDESSI trial (2026): Open Dialogue versus usual care for adults presenting in mental health crisis

Collaborative Therapy

Core mechanism: Collaborative, non-hierarchical dialogue generates new meanings and dissolves the language-systems that maintain problems. Change occurs through conversation itself rather than technique.

Ontology: Problems as language-systems maintained in conversation, not as fixed entities inside individuals but as meanings co-created and co-dissolved through dialogue

Open Dialogue

Core mechanism: Rapid mobilization of the person's social network + dialogical conversation where meaning is co-constructed + tolerance of uncertainty rather than premature diagnostic closure → psychotic experience becomes speakable

Ontology: Crisis and psychotic experience emerge in the relational network and can be resolved dialogically without premature medicalization: the network, not the individual brain, is the unit of treatment

Linked only in the Collaborative Therapy entry

Linked only in the Open Dialogue entry

Collaborative Therapy

Philosophical roots: Wittgenstein (language games); Gadamer (hermeneutics, dialogue); Gergen (social constructionism); Bakhtin (dialogism)

Blind spots: No empirical base; not-knowing stance can be misread as absence of expertise; postmodern framework not accepted by evidence-based practice advocates; may be insufficient for acute presentations

Therapeutic voice: I'm not sure I understand yet. Help me see it the way you see it.

Open Dialogue

Philosophical roots: Bakhtin (dialogism, polyphony); Vygotsky (social origins of thought); Wittgenstein (meaning as use in social context); Bateson (systemic epistemology); Anderson & Goolishian (not-knowing position); social constructionism

Blind spots: Non-randomized evidence base, and the one randomized test did not replicate it; extremely resource-intensive; challenges medical model in ways that may delay necessary pharmacological treatment; cultural specificity (Finnish context)

Therapeutic voice: [To reflecting team, in front of the family] I found myself feeling uncertain just now. I wonder if that uncertainty is something the family also feels.