ClinicalTrials.gg
TerminatedNCT03338491AddRiskStudUpdated Mar 25, 2020

Addiction Risk: Mindset Induction Effect on Brief Intervention

An interventional study of Induction of Implemental Mindset and Induction of Deliberative Mindset in Alcohol Drinking in College, sponsored by University of Konstanz. Terminated at 1 site in Germany. Open to participants aged 18 Years to 65 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2020-03-25.

Sponsored by University of Konstanz · Not applicable, Interventional, and Prevention

Why this study was terminated
unexpected alcohol use increase identified in preliminary analysis after half of study enrollments

Help build ClinicalTrials.gg — short surveys, remote interviews or testing, in your language. Take part →

Phase
Not applicable
Study type
Interventional
Enrollment
64
Allocation
Randomized
Ages
18 Years to 65 Years
Sex
All
01

Study summary

Brief Interventions (BI) based on Motivational Interviewing are effective to reduce alcohol use. In this study the investigators test the hypothesis that that an open Mindset increases the positive effects of BI.

University students take part in a voluntary screened for risky alcohol use. All students with risky alcohol use are eligible to the study and all receive the WHO's ASSIST-linked BI.

Participants receive a brief Mindset induction prior to receiving BI. They are are randomly assigned to either the induction of an open or a closed mindset according to the Mindset theory of action phases (Gollwitzer \& Keller (2016). Mindset Theory. In: V. Zeigler-Hill, T.K. Shackelford (eds.), Encyclopedia of Personality and Individual Differences. New York: Springer).

The investigators measure the change in alcohol-related risk perception, treatment motivation and real alcohol drinking after the Brief Intervention in relation to the mindset induced before receiving the intervention.

02

Conditions studied

  • Alcohol Drinking in College
03

In context

Alcohol Drinking in College

38 studies on the registry are indexed under Alcohol Drinking in College; 8 are open to participants now.

This study's enrollment of 64 is below the median of 258 across 36 interventional studies indexed under Alcohol Drinking in College.

Browse Alcohol Drinking in College studies →

Lead sponsor

University of Konstanz is the lead sponsor of 51 studies on the registry; none are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 65 Years
Sexes eligible
All
Accepts healthy volunteers
Yes

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • student status at University of Konstanz
  • risky alcohol use in past 12 months

Exclusion criteria

Exclusion Criteria:

  • acute psychosis, acute suicidality, illiteracy
05

Study design

Phase
Not applicable
Primary purpose
Prevention
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
64 participants (actual)

Study arms

  • Experimental
    Induction of Implemental Mindset

    Psychological Intervention. Participants are asked to work on a brief paper-and-pencil task that has been shown to induce an Implemental Mindset according to the Mindset theory of action phases (Gollwitzer \& Keller (2016). Mindset Theory. In: V. Zeigler-Hill, T.K. Shackelford (eds.), Encyclopedia of Personality and Individual Differences. New York: Springer).

    Behavioral: Induction of Implemental Mindset

  • Experimental
    Induction of Deliberative Mindset

    Psychological Intervention. Participants are asked to work on a brief paper-and-pencil task that has been shown to induce a Deliberative Mindset according to the Mindset theory of action phases (Gollwitzer \& Keller (2016). Mindset Theory. In: V. Zeigler-Hill, T.K. Shackelford (eds.), Encyclopedia of Personality and Individual Differences. New York: Springer).

    Behavioral: Induction of Deliberative Mindset

  • No intervention
    Control

    Participants will revive no induction of any mindset.

Interventions

  • BehavioralInduction of Implemental Mindset

    This induction of a psychological state was extensively studied in basic cognitive science. Gollwitzer \& Keller (2016, p.3): "The implemental mindset is evoked by asking participants to think of a personal project for which they have already made the decision to act but did not initiate any action yet. Subsequently, participants are asked to list the steps necessary for successful goal attainment and to plan out in detail when, where, and how they intend to act on each of these steps."

  • BehavioralInduction of Deliberative Mindset

    This induction of a psychological state was extensively studied in basic cognitive science. Gollwitzer \& Keller (2016, p.3): "The deliberative mindset is evoked by asking participants to (a) name an unresolved, important personal problem that is causing rumination but for which they have not made a decision yet and (b) reflect on whether to take action or not. Further, to enhance the depth of reflection, participants are requested to list a number of positive and negative, short- and long-term consequences of both deciding to act and deciding not to act; indicating the probability of the occurrence of each of these consequences is required."

06

What researchers measure

Primary outcomes

  1. Questionnaire on Alcohol-related Risk Perception

    Self-Report Measure that is filled out by the participant. This German questionnaire was developed by Klepper, Odenwald \& Rockstroh (2016).

    Time frame: 4 weeks

  2. Alcohol Time-line Follow Back

    Self-reported amount of standard alcohol units consumed. The assessment is made with the calendar method developed by Sobell \& Sobell (1995)

    Time frame: 4 weeks

Secondary outcomes

  1. SOCRATES

    Questionnaire: The Stages of Change Readiness and Treatment Eagerness Scale (SOCRATES, Miller, W. R., \& Tonigan, J. S. (1996). Assessing drinkers' motivation for change: The Stages of Change Readiness and Treatment Eagerness Scale (SOCRATES). Psychology of Addictive Behaviors 10, 81-89.

    Time frame: 4 weeks

07

Study locations

1 site
  • University of Konstanz, Psychotherapy Outpatient Clinic
    Konstanz, 78464, Germany
08

References and documents

Individual participant data

Plan to share: Undecided

No publications or documents are linked to this record.

09

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reached

Ran from Nov 2017 to primary completion in Oct 2018, 11 months.

How these figures are worked out, and which studies are left out of them.

Registered
Nov 7, 2017
First posted
Nov 9, 2017
StartActual
Nov 21, 2017
Primary completionActual
Oct 31, 2018
CompletionActual
Apr 30, 2019
Last update
Mar 25, 2020
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Mar 25, 2020, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT03338491
Lead sponsor
University of Konstanz
Responsible party
Michael Odenwald (Director Outpatient Clinic or Psychotherapy, University of Konstanz) — Principal investigator
First posted
Nov 9, 2017
Start date
Nov 21, 2017
Primary completion
Oct 31, 2018
Completion
Apr 30, 2019
Last update
Mar 25, 2020

Study contacts

Michael Odenwald, PhD
principal investigator · University of Konstanz

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is terminated, as verified in Mar 2020. You cannot join it, but the record below documents what was studied.

Follow this study

Get an email when the registry record changes — status, dates, results — or when someone posts here.

Sign in to follow

Discussion

Questions and observations about this study, from anyone following it. Not medical advice, and not a channel to the study team — their contact details are on the registry record.

Sign in to join the discussion. Reading takes no account; posting does. You choose a display name, and a pseudonym is the default.

Nothing here yet. If you are running this trial, taking part in it, or weighing whether to, this is the place to say so.

Start the discussion