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Related Experiment Videos

Examining motivational interviewing's effect on confidence and commitment using daily data.

Alexis Kuerbis1, Kevin G Lynch2, Sijing Shao3

  • 1Silberman School of Social Work, Hunter College at the City University of New York, New York, NY 10035, USA.

Drug and Alcohol Dependence
|September 8, 2019
PubMed
Summary
This summary is machine-generated.

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Motivational Interviewing (MI) and its spirit-only variant (SOMI) were tested for behavior change. Unexpectedly, SOMI, not MI, showed a stronger link between commitment to abstain and reduced drinking.

Area of Science:

  • Behavioral Psychology
  • Clinical Psychology
  • Addiction Research

Background:

  • Mechanisms of behavior change (MOBC) in Motivational Interviewing (MI) are theorized to involve relational and technical elements, aiming to boost client motivation and self-efficacy for reduced drinking.
  • Existing research offers partial support for this causal pathway, especially when focusing on within-session change talk.
  • This study investigated alternative intervening variables: daily commitment and confidence, measured via ecological momentary assessment (EMA).

Purpose of the Study:

  • To explore whether daily commitment and confidence predict reduced alcohol consumption, serving as alternative intervening variables in the context of MI.
  • To compare the efficacy of MI, Spirit only MI (SOMI), and a non-therapy control in influencing these variables and subsequent drinking behavior.
  • To test the hypothesis that MI would show a stronger relationship between intervening variables and drinking reduction compared to SOMI and the control.
Keywords:
AlcoholMechanisms of actionMotivationMotivational interviewingSelf-efficacy

Related Experiment Videos

Main Methods:

  • A pilot randomized controlled trial involving 89 problem drinkers seeking to moderate alcohol intake.
  • Participants were assigned to MI, SOMI (non-directive MI elements), or a control group.
  • Daily EMA data collected over seven weeks measured confidence, commitment to abstain/moderate, and drinks consumed.

Main Results:

  • Contrary to hypotheses, participants in SOMI reported higher daily confidence than those in MI; no significant differences in commitment were found between groups.
  • All daily measures (confidence, commitment) significantly predicted drinking behavior across all conditions.
  • The MI group did not exhibit a stronger relationship between intervening variables and drinking; however, SOMI demonstrated the strongest association between daily commitment to abstain and reduced drinking.

Conclusions:

  • The study's findings challenge the hypothesized causal chain for MOBC in MI, particularly regarding the role of within-session change talk.
  • Spirit only MI (SOMI) emerged as a potentially potent intervention, showing a robust link between commitment to abstain and drinking reduction.
  • Further research is needed to understand the unexpected results and the specific mechanisms driving behavior change in different MI-based interventions.