Over the years, motivational interviewing has established itself as an evidence-based treatment. This means that its usefulness is supported by research. One study found that motivational interviewing outperformed traditional counseling techniques in 75% of studies.

What is the success rate of motivational interviewing?

Summary of main findings

This review documents that motivational interviewing in a scientific setting effectively helps clients change their behaviour and that it outperforms traditional advice giving in approximately 80% of the studies.

Is motivational interviewing effective Why Why not?

MI can help high-risk clients build motivation for their treatment. A review of studies by Lundahl and Burke (2009) found that MI was 10% to 20% more effective at reducing risky behaviors and increasing engagement than no treatment at all.