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RCT Protocol for 'OverThinking': A Mobile EMI for Reducing Experiential Avoidance

A Mobile Ecological Momentary Intervention for Reducing Experiential Avoidance in the Context of Rumination: Protocol for a Randomised-Controlled Trial

Status
Not yet recruiting
Phases
NA
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT06570694
Enrollment
60
Registered
2024-08-26
Start date
2025-05-01
Completion date
2025-07-30
Last updated
2025-05-02

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Anxiety, Depression, Rumination

Keywords

Rumination, Experiential Avoidance, Depression, Anxiety, Ecological momentary intervention

Brief summary

The goal of this trial is to examine whether a mobile app intervention for rumination can modify a maladaptive feature of repetitive negative thinking (RNT) - this is understood by the link between daily RNT and well-being, depressive and anxiety symptoms. The main questions it aims to answer are: 1. If the intervention can modify the maladaptive feature of repetitive negative thinking - the investigators anticipate the link between daily rumination and maladaptive outcomes (poorer wellbeing, higher depressive/anxious symptoms) will be weaker in the intervention groups. 2. By examining (1) above, to confirm the role played by avoidance in repetitive negative thinking. 3. By splitting the intervention condition into two groups (one receiving concurrent support from a therapist, one not), to evaluate if interventions such as these might be enhanced by therapist support. 4. To examine if the impact of the intervention on depressive and anxious symptoms might be mediated by changes in beliefs regarding emotions (e.g. the valuation of negative emotions). Researchers will compare across four groups to examine the above effects: (1) intervention condition (therapist support); (2) intervention condition (no therapist support); (3) Partial intervention (daily sampling and emotion valuation questions); (4) Control group (only daily sampling questions). Participants will: * Be requested to participate in a four-week intervention, providing daily assessments of depressive and anxiety symptoms, affect, repetitive negative thinking, and rumination outcomes. * Use a mobile application during the intervention period, which has been designed by the research team (intervention groups), or provide daily assessment scores only (control groups). * Be assessed at pre-intervention (all groups), post-intervention (all groups), 1-month follow-up (all groups), and 3-month follow-up (intervention groups only).

Detailed description

The trial aims to examine whether a mobile application-based intervention for experiential avoidance in the context of rumination can modify a maladaptive feature of repetitive negative thinking (RNT) - this is understood by the link between daily RNT and well-being, depressive and anxiety symptoms. The main questions which the trial aims to answer are as follows: 1. If the intervention can modify the maladaptive feature of repetitive negative thinking - the investigators anticipate the link between daily rumination and maladaptive outcomes (poorer wellbeing, higher depressive/anxious symptoms) will be weaker in the intervention groups. 2. By examining (1) above, to confirm the role played by avoidance in repetitive negative thinking. 3. By splitting the intervention condition into two groups (one receiving concurrent support from a therapist, one not), to evaluate if interventions such as these might be enhanced by therapist support. 4. To examine if the impact of the intervention on depressive and anxious symptoms might be mediated by changes in beliefs regarding emotions (e.g. the valuation of negative emotions). Researchers will compare across four groups to examine the above effects: (1) intervention condition (therapist support); (2) intervention condition (no therapist support); (3) Partial intervention (daily sampling and emotion valuation questions); (4) Control group (only daily sampling questions). The trial comprises of a four-arm, parallel group randomised-controlled trial (RCT). Participation lasts approximately 2 months (including eligibility screening and random allocation to condition (random number generator), a four-week intervention period delivered via the mobile application and supplemented with daily assessments, post-intervention assessments, and 1-month follow-up (wherein the app will remain available for self-directed use without daily sampling), concluding with follow-up assessments and measurement of any engagement with the application during this period. At the point of 1-month follow-up, participants previously allocated to the control groups will receive access to the application (without the feature of daily sampling) and will be provided with guidance on using the intervention content. While a 3-month follow-up assessment of intervention participants is planned, the 1-month interval allows for control participants to access intervention content without being subject to extensive waitlist delay. Active control groups have been chosen to not artificially inflate comparisons with outcomes in the intervention conditions. Analysis: Analysis of changes in outcomes across pre-, post- and follow-up-measures (PTQ, EBQ, PBRS, NBRS, HADS, CAQ, and BEAQ) across all four conditions will be conducted using mixed-design ANOVA. Additionally for all conditions, multilevel models (daily observations on level 1 nested in participants on level 2) will be used on daily sampling data to assess the links between avoidance and mood and between rumination and mood, and to determine if each of these links is moderated by condition. Participants respond to these items once daily in the evening, in response an in-app reminder alert (the time of the alert can be determined by the participant). All daily sampling items have been provided in the 'Measures' section. Mixed-design ANCOVA will be used for the two intervention groups to examine if time spent engaging with the application content acts as a covariate in intervention outcomes (PTQ, EBQ, PBRS, NBRS, HADS, CAQ, and BEAQ). Finally, ongoing development of the application will be assisted using in-app user-feedback data obtained via CORTO implementation (three items with gather a combination of quantitative and qualitative data \[Lukka et al,. 2024\]). This data will be coded deductively using the process outlined by Saldana (2016) and using the four categories identified by Lukka et al. (2024) as high-level guidance ((1) contextual use, (2) interaction-elicited emotional experience, (3) usability, and (4) technical issues.), with more detailed coding examined as subdomains.

Interventions

BEHAVIORALOverThinking

OverThinking is a mobile application ecological momentary intervention for iOS and Android, which has been designed for the reduction of experiential avoidance in rumination. The application primarily consists of psychoeducation content and related exercises intended to be delivered over a four-week period. In order to examine the effectiveness of the application during the course of the intervention and to examine user-experiences of using the application for the purpose of rumination intervention, a number of self-report tools are embedded.

Sponsors

Polish Japanese Academy of Information Technology
CollaboratorUNKNOWN
University of Social Sciences and Humanities, Warsaw
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
SINGLE (Subject)

Masking description

Participants will be allocated to condition via a random number generator and will be provided with trial instructions pertaining only to their allocated condition. Trial participants will not be provided with any information relating to the remaining three conditions in the trial until the 1-month follow-up period has elapsed. The member of the research team responsible for analysing the data will additionally be blinded to the allocation of participants. This will be anonymised for them in the dataset without accompanying explanatory label.

Intervention model description

Four arm parallel-group trial: (1) intervention condition (therapist support); (2) intervention condition (no therapist support); (3) Partial intervention (daily sampling and emotion valuation questions); (4) Control group (only daily sampling questions).

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

\- Self-reporting problems with repetitive negative thinking.

Exclusion criteria

* Aged below 18 years at the commencement of the trial. * Currently in receipt of any form of psychotherapy. * Currently in receipt of any form of psychiatric medication. Note: Participants who hold a psychiatric diagnosis will not be excluded from the trial provided they meet the inclusion criterion and do not meet any of the

Design outcomes

Primary

MeasureTime frameDescription
Daily Sampling Items (5: Rumination Outcomes)Once daily for 30 daysThree items assessing the productivity of the individual's engagement in rumination, emotional discomfort resulting from rumination, and rumination-induced motivation during the day: 1) How productive was your rumination today? (1: not at all, 7: very much), 2) How difficult/painful/comfortable was this reflection for you? (1: not at all, 7: very much), and 3) Did it motivate you to take specific action? (1: definitely not, 7: definitely yes)
Daily Sampling Items (3: Affect)Once daily for 30 daysFour closed-ended items adapted from Pe et al. (2013) (rated on a scale of 1: not at all, to 7: very much), which ask the participant about the extent to which they felt nervous/anxious, sad, angry, and disgusted during the day. Additionally, an open-ended item is presented asking participants to 'Choose the emotion that you felt the strongest - what useful function could it have played for you today?'
Daily Sampling Items (4: Goals)Once daily for 30 daysAdapted from Moberly & Watkins (2010), participants are asked to enter a goal of importance to them during the day. Two follow-up questions then ask: 1) How important was this goal? (1: not at all, 7: very much), and 2) To what extent did you manage to achieve this goal? (1: not at all, 7: very much)
Perseverative thinking as measured by the Perseverative Thinking Questionnaire (PTQ)Two months (4-week intervention plus 1-month follow-up)The PTQ is a 15-item self-report measure, which assesses the main characteristics of repetitive negative thinking (1: core features - 9 items, 2: unproductiveness - 3 items, 3: capturing mental capacity - 3 items. Responses are recorded on a scale of '0' ('never') to '4' ('almost always').
Beliefs about emotions as measured by the Emotion Beliefs Questionnaire EBQTwo months (4-week intervention plus 1-month follow-up)The EBQ is a 16-item self-report questionnaire intended to measure the controllability of emotions and respondent beliefs about the usefulness of emotions. Respondents answer using a 7-point Likert scale ranging from 1 (totally disagree) to 7 (totally agree), with high scores indicating a belief that emotions are uncontrollable and/or useless.
Metacognitive beliefs about rumination using PBRS/NBRSTwo months (4-week intervention plus 1-month follow-up)This is comprised of two sub-scales (positive beliefs: 9-items, negative beliefs: 13-items) measuring metacognitive beliefs of depressive rumination. Respondents rate the extent to which they agree with each of the items using a 4-point Likert-type scale ranging from 1 (do not agree) to 4 (agree very much), with higher scores on each subscale indicating greater positive/negative belief accordingly.
Hospital Anxiety and Depression Scale (HADS)Two months (4-week intervention plus 1-month follow-up)A measure of possible and probable presence of anxiety disorders and depression, comprising seven items for depression and seven items for anxiety. Respondents rate on a scale of 0-3 for each item, with higher total scores for each subdomain (anxiety, depression) indicating greater presence of the disorder. Thresholds are provided for determining the clinical presence of disorder as follows: 0-7 = Normal, 8-10 = Borderline abnormal (borderline case),11-21 = Abnormal (case)
Cognitive avoidance using the CAQTwo months (4-week intervention plus 1-month follow-up)A 25-item measure of five worry-related cognitive avoidance strategies (thought suppression, thought substitution, distraction, avoidance of threatening stimuli, transformation of images into thoughts). The scale comprises five subscales, each containing five items, which represent individual cognitive avoidance strategies (avoidance of threatening stimuli, distraction, thought substitution, thought suppression, transformation of images into thoughts). Respondents answer on a five-point scale (1: not at all applicable, to 5: very applicable), with higher scores indicating greater presence of cognitive avoidance.
Experiential avoidance using the BEAQ.Two months (4-week intervention plus 1-month follow-up)A 15-item short-version of the Multidimensional Experiential Avoidance Questionnaire, measuring EA content across six dimensions. Respondents provide answers to pre-determined statements along a 6-point Likert scale ('1': strongly disagree; to '6': strongly agree), with higher scores indicating a greater presence of experiential avoidance.
Daily Sampling Items (1: Repetitive Negative Thinking Items)Once daily for 30 daysNine items relating to different dimensions of repetitive negative thinking derived from the scale by Rosenkrantz et al. (2020) (feelings, problems, past, future, duration, distress, repetitiveness, intrusiveness, uncontrollability). These are answered on a scale from 1-7 (1: not at all, 7: very much), with a higher overall score indicating a greater presence of issues with repetitive negative thinking.
Daily Sampling Items (2: Depression)Once daily for 30 daysThree items developed from the scale by Krejtz et al. (2016), which ask the participant about their day (1: very negative, 7: very positive), the extent to which they felt positive about themselves that day (1: not at all, 7: very much) and how they are feeling about tomorrow (1: very negative, 7: very positive). Higher total scores indicate greater severity of difficulties with depression on that day.

Secondary

MeasureTime frameDescription
Time spent using the applicationDuring the 4-week intervention period and 1-month follow-up periodThe application has been designed to record the amount of time a user is active (and in which in-app exercises). This data is stored remotely and securely via Firebase. This data is password protected and access is limited to the individuals on the research team.

Other

MeasureTime frameDescription
Ongoing Application Development Feedback (CORTO)During the 4-week intervention period and 1-month follow-up periodThree items (two quantitative and two qualitative) collected following each in-app exercise, with the aim of providing real-time user-experience data to enable the ongoing development of the app. Items include: 1) Do you like using the application? (1: not at all, 7: very much), 2) How would you rate the difficulty level of using the application? (1: definitely too easy, 7: definitely too difficult), and 3) Would you like to share any thoughts about the app? (open-ended question). Data obtained via CORTO implementation will be coded deductively using the process outlined by Saldana (2016) and using the four categories identified by Lukka et al. (2024) as high-level guidance ((1) contextual use, (2) interaction-elicited emotional experience, (3) usability, and (4) technical issues.), with more detailed coding examined as subdomains.

Contacts

Primary ContactMonika Kornacka, PhD
mkornacka@swps.edu.pl+48 533 577 141
Backup ContactSteven Barnes, PhD
sbarnes@swps.edu.pl+48 515 121 270

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026