Motivational Interviewing vs SFBT
A side-by-side comparison: mechanism, evidence, the conditions each treats, philosophical roots, and where they actually disagree clinically.
At a glance
Motivational Interviewing
- Tradition
- Humanistic
- Founder
- Miller / Rollnick (1983)
- Evidence
- Guideline-recommended
- Focus
- Relational + Behavioral
- Format
- Individual
- Duration
- Short-term
SFBT
- Tradition
- Postmodern
- Founder
- de Shazer / Insoo Kim Berg (1985)
- Evidence
- Guideline-recommended
- Focus
- Strengths-based
- Format
- Indiv + Family + Group
- Duration
- Very short (1-8)
How they work
Motivational Interviewing
Core mechanism: Resolving ambivalence through evocation of client's own change talk; autonomy support increases intrinsic motivation
Ontology: Ambivalence about change is normal; confrontation increases resistance, empathy reduces it
SFBT
Core mechanism: Identifying exceptions, preferred futures, and existing strengths amplifies what already works; solution-building vs. problem-solving
Ontology: Problems are not continuous; exceptions exist. Focusing on problems maintains problems; focusing on solutions builds solutions
Conditions treated
2 shared · 1 Motivational Interviewing-only · 2 SFBT-only
Both treat
Only Motivational Interviewing
Only SFBT
What each assumes — and misses
Motivational Interviewing
Philosophical roots: Rogers (empathy, autonomy); Kierkegaard (stages, either/or); Festinger (cognitive dissonance); Deci & Ryan (self-determination theory)
Blind spots: Not a standalone treatment for most conditions; because the method is strategic, its autonomy language can be used instrumentally, steering a client toward an outcome the clinician has already chosen
Therapeutic voice: So drinking is the one thing that reliably quiets your head at night, and you didn't like who you were on Sunday morning. Where does that leave you?
SFBT
Philosophical roots: Wittgenstein (language games: meaning is use); de Shazer and Insoo Kim Berg (solution-focused, developed jointly at the Milwaukee Brief Family Therapy Center); social constructionism (Gergen); pragmatism (what works matters more than why)
Blind spots: May minimize genuine suffering by focusing prematurely on solutions; limited depth for complex trauma or personality work
Therapeutic voice: Tell me about a recent time when the problem wasn't happening. What was different?
Choosing between them
Motivational Interviewing (Humanistic) and SFBT (Postmodern) come from different traditions, which means they assume different things about what a person is, what causes suffering, and what the therapeutic relationship is for. The choice between them is often less about "which works better" and more about which set of assumptions fits the client and the therapist.
For deeper coverage: see the full Motivational Interviewing and SFBT pages, or use the interactive comparison tool to add more modalities to this comparison.