ClinicalTrials.gg
Not yet recruitingNCT07916805Updated Nov 4, 2026

Effects of Expectancy and Mindfulness Instructions on Chronic Pain

An interventional study of Mindfulness of Breath Practice (15 min) and Sham-Mindfulness Practice in Chronic Pain, sponsored by Florida State University. Not yet recruiting at 1 site in United States. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-11-04.

Sponsored by Florida State University · Not applicable, Interventional, and Treatment

Updated Nov 4, 2026Newly registeredGo to Updates ↓
Phase
Not applicable
Study type
Interventional
Enrollment
60
Allocation
Randomized
Ages
18 Years and older
Sex
All
01

Study summary

This randomized 2×2 factorial study will examine how verbal expectancy framing and mindfulness-specific practice instructions influence acute pain and brain activity in adults with chronic pain. Sixty meditation-naïve adults will be assigned to one of four conditions combining positive or negative expectancy framing with either a guided mindfulness exercise or a sham-meditation comparison exercise. Pain intensity, pain unpleasantness, anxiety, desire for pain medication, and mindfulness-related psychological states will be assessed before and immediately after the intervention, while electroencephalography (EEG) will be used to measure changes in brain activity during the exercise. The study is designed to clarify the independent and combined contributions of expectancy and mindfulness-specific instructions to acute pain relief and neurophysiological responses.

02

Conditions studied

  • Chronic Pain

Browse trials for

Keywords

  • Chronic Pain
  • Mindfulness
  • Expectations
  • Neuroimaging
03

In context

Chronic Pain

3,008 studies on the registry are indexed under Chronic Pain; 710 are open to participants now.

This study's planned enrollment of 60 is close to the median of 60 across 2,218 interventional studies indexed under Chronic Pain.

Browse Chronic Pain studies →

Lead sponsor

Florida State University is the lead sponsor of 247 studies on the registry; 47 are open to participants now.

Of its 16 completed or terminated interventional studies of FDA-regulated products, 9 (56%) have results posted.

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

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

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

  • Age 18 years or older
  • Chronic pain, defined as pain occurring on more days than not during the past 3 months
  • Average pain intensity ≥3 on a 0-10 scale during the past week
  • Meditation-naïve, defined as no prior formal or informal meditation training, including MBSR/MBCT, books, or online resources

Exclusion criteria

Exclusion Criteria:

  • Inability to provide informed consent
  • Acute cognitive impairment preventing meaningful participation, in the judgment of the study team
  • Unwillingness to refrain from as-needed pain-relief modalities for 3 hours before the laboratory exercise when safe and feasible
  • Unwillingness to complete all study procedures
05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Factorial assignment
Masking
Single (Participant)
Enrollment
60 participants (estimated)

Study arms

  • Experimental
    Mindfulness + Positive Expectancy

    Behavioral: Mindfulness of Breath Practice (15 min)

  • Experimental
    Mindfulness + Negative Expectancy

    Behavioral: Mindfulness of Breath Practice (15 min)

  • Experimental
    Sham-Mindfulness + Positive Expectancy

    Behavioral: Sham-Mindfulness Practice

  • Experimental
    Sham-Mindfulness + Negative Expectancy

    Behavioral: Sham-Mindfulness Practice

Interventions

  • BehavioralMindfulness of Breath Practice (15 min)

    Standard mindfulness of breath practice to last 15 minutes. Accompanied by either a positive or negative expectancy script directly beforehand.

  • BehavioralSham-Mindfulness Practice

    Sham-mindfulness comparator to last 15 min. Participants will be prompted every 3 min to "take a deep breath, as we sit here in mindfulness." Accompanied by either a positive or negative expectancy script directly beforehand.

06

What researchers measure

Primary outcomes

  1. Pain Intensity

    Current pain intensity will be assessed using a 0-10 numeric rating scale, with 0 indicating no pain and 10 indicating the worst pain imaginable. Pain intensity will be assessed immediately before and after the intervention; the primary analysis will compare post-intervention ratings across experimental conditions while adjusting for the corresponding pre-intervention rating.

    Time frame: Immediately before and after the 15-minute intervention

  2. Pain Unpleasantness

    Current pain unpleasantness will be assessed using a 0-10 numeric rating scale, with 0 indicating not at all unpleasant and 10 indicating extremely unpleasant. Pain unpleasantness will be assessed immediately before and after the intervention; the primary analysis will compare post-intervention ratings across experimental conditions while adjusting for the corresponding pre-intervention rating.

    Time frame: Immediately before and after the 15-minute intervention

Secondary outcomes

  1. Anxiety

    Current anxiety will be assessed using a 0-10 numeric rating scale, with 0 indicating not at all anxious and 10 indicating extremely anxious. Anxiety will be assessed immediately before and after the intervention; analyses will compare post-intervention ratings across experimental conditions while adjusting for the corresponding pre-intervention rating.

    Time frame: Immediately before and after the 15-minute intervention

  2. Desire for Pain Medication

    Current desire for pain medication will be assessed using a 0-10 numeric rating scale, with 0 indicating no desire at all and 10 indicating the strongest possible desire. Desire for pain medication will be assessed immediately before and after the intervention; analyses will compare post-intervention ratings across experimental conditions while adjusting for the corresponding pre-intervention rating.

    Time frame: Immediately before and after the 15-minute intervention

  3. Change in Frontal-Midline Theta Power

    EEG frontal-midline theta power in the 4-8 Hz frequency band will be measured over a prespecified frontal-midline region of interest centered on Fz, FCz, and Cz. Mean theta power during the assigned exercise will be expressed relative to the 5-minute eyes-closed resting baseline.

    Time frame: During the 15-minute intervention relative to the 5-minute pre-intervention resting baseline

Other outcomes

  1. Mindfulness

    State mindfulness will be assessed using the 3-item state version of the Metacognitive Processes of Decentering scale (MPoD-3). Scores will be assessed immediately before and after the intervention to characterize intervention-related changes in state mindfulness.

    Time frame: Immediately before and immediately after the 15-minute intervention

  2. Self-Transcendence

    State self-transcendence will be assessed using the 3-item state version of the Nondual Awareness Dimensional Assessment (NADA-3). Scores will be assessed immediately before and after the intervention to characterize intervention-related changes in state self-transcendence.

    Time frame: Immediately before and immediately after the 15-minute intervention

  3. Pre-Intervention Treatment Expectancy

    Expected effectiveness of the mindfulness exercise for reducing pain will be assessed using a 0-10 numeric rating scale, with 0 indicating not at all effective and 10 indicating extremely effective.

    Time frame: Immediately before the expectancy manipulation and 15-minute intervention

  4. Post-Intervention Treatment Credibility

    Perceived credibility or believability of the exercise as a pain-management technique will be assessed using a 0-10 numeric rating scale, with 0 indicating not at all credible and 10 indicating extremely credible.

    Time frame: Immediately after the 15-minute intervention

  5. Number of Participants Reporting an Unpleasant or Adverse Experience

    Participants will indicate whether they experienced an unpleasant or adverse experience during the intervention using a Yes/No item. Participants responding Yes will have the opportunity to provide a free-text description of the experience.

    Time frame: Immediately after the 15-minute intervention

  6. Perceived Sociocultural Scaffolding of the Study Encounter

    Perceived sociocultural features of the study encounter will be assessed using a 12-item exploratory questionnaire developed for this study. Participants will rate each item on a 1-7 Likert scale ranging from strongly disagree to strongly agree. The questionnaire includes four 3-item subscales assessing: (1) appeal to expert authority, (2) relational alliance-building, (3) ritualization of study procedures, and (4) co-constructed meaning-making. Higher scores on each subscale indicate greater perceived presence of that sociocultural scaffold.

    Time frame: Immediately after the post-exercise processing period, prior to debriefing.

07

Study locations

1 site
08

References and documents

Individual participant data

Plan to share: Yes — IPD may be shared with qualified individuals upon request.

No publications or documents are linked to this record.

09

Timeline

1 registry update since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Start is estimated for Jan 2027; primary completion for Sep 2027, 7 months later.

Of 1,217 non-industry interventional studies with no phase under Chronic Pain, half reached primary completion within 21 months of starting (the median), counting those still running; a quarter within 9 and three quarters within 40. This study's planned 7 months is below that.

Counting every sponsor, half of 1,306 studies reached it within 21 months; a quarter within 9 and three quarters within 39.

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

Registered
Oct 29, 2026
First posted
Nov 4, 2026
StartEst.
Jan 15, 2027
Primary completionEst.
Sep 1, 2027
CompletionEst.
Sep 1, 2027
Last update
Nov 4, 2026
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.
Registered
First appeared on the registry. No changes since
Nov 4, 2026
Show all 1 update
  1. Nov 4, 2026
    First appeared on the registry

From the registry record's own update history. This site started tracking changes on Sep 25, 2026; for anything earlier, see the record history on ClinicalTrials.gov ↗

10

Registry details

Key details

Study ID
NCT07916805
Responsible party
Adam Hanley (Associate Professor, Florida State University) — Principal investigator
First posted
Nov 4, 2026
Start date
Jan 15, 2027 (estimated)
Primary completion
Sep 1, 2027 (estimated)
Completion
Sep 1, 2027 (estimated)
Last update
Nov 4, 2026

Study contacts

Carter Minnick
Contact
cm25bo@fsu.edu
850-270-7844

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 not yet recruiting, as verified in Oct 2026. 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