Efficacy of Trauma-Focused Single Session ACT in Adolescents of Southern Punjab, Pakistan: Two Years Following 2022 Torrential Flood

Last registered on January 05, 2026

Pre-Trial

Trial Information

General Information

Title
Efficacy of Trauma-Focused Single Session ACT in Adolescents of Southern Punjab, Pakistan: Two Years Following 2022 Torrential Flood
RCT ID
AEARCTR-0017537
Initial registration date
December 21, 2025

Initial registration date is when the trial was registered.

It corresponds to when the registration was submitted to the Registry to be reviewed for publication.

First published
January 05, 2026, 7:06 AM EST

First published corresponds to when the trial was first made public on the Registry after being reviewed.

Locations

Region

Primary Investigator

Affiliation
Universiti Malaysia Sarawak

Other Primary Investigator(s)

PI Affiliation
Universiti Malaysia Sarawak
PI Affiliation
University of Southern Denmark

Additional Trial Information

Status
Completed
Start date
2024-07-22
End date
2024-10-18
Secondary IDs
N/A
Prior work
This trial does not extend or rely on any prior RCTs.
Abstract
Objective
Natural disasters pose significant psychological challenges, particularly for adolescents, who are developmentally vulnerable to trauma-related disorders. In 2022, widespread flooding in Southern Punjab, Pakistan, caused substantial loss. The present study evaluated the efficacy of Single-Session Acceptance and Commitment Therapy (SS-ACT) in reducing PTSD symptoms among adolescents aged 12–18 years in Taunsa, Pakistan.
Method
A two-arm randomized multiple baseline design was employed, with 85 participants equally distributed across experimental (n = 38) and control (n = 47) groups. The intervention was structured around the ACT Triflex model, emphasizing Be Present,
Open Up, and Do What Matters. Outcome measures included the Child PTSD Symptom Scale (CPSS).
Result
Repeated-measures ANOVA revealed a significant reduction in PTSD symptoms in
the experimental group immediately post-intervention (F(3.38, 280.57) = 19.43, p < .001, η² = .19), with a significant time × group interaction (F(3.38, 280.57) = 8.78, p < .001, η² = .10). Gender analyses indicated minor differences but no significant three-way interaction (time × group × gender).
Conclusion
The findings demonstrate SS-ACT as a feasible, culturally adaptable, and costeffective intervention for post-disaster adolescent populations, offering an immediate, first-line psychological support strategy. Implications for theory, clinical practice, policy, and future research underscore its potential integration into disaster-response frameworks and preventive mental health programs in resource-limited, disasterprone regions.
Keywords: Single-Session Acceptance and Commitment Therapy, PTSD, Adolescents, Taunsa
External Link(s)

Registration Citation

Citation
Elklit, Dr. Ask , Dr. Siti Raudzah Ghazali and Sana Rehman. 2026. "Efficacy of Trauma-Focused Single Session ACT in Adolescents of Southern Punjab, Pakistan: Two Years Following 2022 Torrential Flood." AEA RCT Registry. January 05. https://doi.org/10.1257/rct.17537-1.0
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Experimental Details

Interventions

Intervention(s)
The intervention model for the SS-ACT therapy proposed by Esawara-Murthy (2020) and Dindo et al. (2025) was utilized with slight modifications. The first stuy was carried out PTSD patietThe structure of single-session therapy is listed below. The therapy was structured around the ACT triflex: Being Open, Being Present, and Doing What Matters. In Being Open, clients practiced acceptance (e.g., tug-of-war
metaphor, anger-as-a-cloud) and cognitive defusion (e.g., ‘I’m having the thought…,’saying thoughts aloud) to change their relationship with anger. In Being Present, techniques such as grounding (5-4-3-2-1), leaves on a stream, the chessboard metaphor, and the silent witness exercise helped clients stay mindful and recognize the observing self. Finally, in Doing What Matters, clients
identified values (e.g., superhero values, value cards) and engaged in committed action through SMART goals and the 10-minute rule to manage anger in alignment with their values
Intervention (Hidden)
Intervention Module
The intervention model for the SS-ACT therapy proposed by Esawara-Murthy (2020) was utilized with slight modifications. Esawara-Murthy’s SS-ACT originally incorporated six core processes of ACT—acceptance, cognitive defusion, mindfulness, self-as-context, values, and committed action—based on the Hexaflex model (Hayes, 2004). However, in the current study, the model was adapted to align with the Triflex model (Harris, 2009a), which simplifies the Hexaflex framework into three main pillars: Be Present (contact with the present moment, self-as-context), Open Up (defusion and acceptance), and Do What Matters (values and committed action).
Additionally, while the original model of SS-ACT was designed to address shame and experiential avoidance (Esawara-Murthy, 2020), the current study introduced modifications to tailor the intervention for anger management. Specifically, certain exercises targeting shame were replaced with those more suited to addressing anger regulation and emotional flexibility. The content for experiential avoidance remained the same but was adjusted to focus on anger rather than shame. Furthermore, the current study focuses on both anger and experiential avoidance, emphasizing their interplay within the framework of psychological flexibility.
Structure of the Session
Duration: 90 Minutes
Goal
The goal of the therapy is to promote psychological flexibility for anger, and experiential avoidance through being open up, fully present and engage in values driven behaviors.
Introduction (15 Minutes)
Initially, the therapist conducted a general assessment of the client, evaluating their perception of their symptoms as problematic. As ACT primarily focuses on acceptance of difficult emotion and making committed action based on valued living, therefore, after initial assessment, the client were ask about their willingness to work on their difficult emotions and follow the therapeutic intervention. Their willingness was taken through the following exercise for taking their commitment to change.
Exercise 1: The Willingness Dial
The students were asked to imagine you have dial through which you can show how much you are willing to accept or allow to experience difficult emotions without try to avoid them.The dial wouldn't help you to have control on the intensity of your emotion, rather it will simply show how much you are open to accept the emotions.
Low on the Dial (0-2). The number from 0 to 2 indicate the minimum or low willingness to experience emotions. You are preferring to avoid the feelings (e.g. you try to distract yourself, or suppress your feeling or lash out).
Middle on the Dial (3-5): The numbers from 3-5 indicates that you are moderately willing to experience your emotions. There is some probability to change your emotion in certain point.
High on Dial (6-10): You’re fully willing and open to experience difficult emotion (anger) without any effort to change it. You are familiar that emotion can exist without you reacting to it or allowing it to control your responses. Those clients who showed positive response or rated between 6-10 were further taken to other steps of SS-ACT.
After obtaining informed consent for the therapy, the therapist firstly, provided psychoeducation to the clients, explaining that experiencing stressful events is a universal human experience and in response to these stressful events, the emotional responses such as anger, shame, and guilt are natural. However, these emotions can become maladaptive when their intensity, frequency, and duration increase, eventually solidifying into unhealthy behavioral patterns if left unaddressed.
The therapist then introduced the five components of anger to the client:
Pre-Anger Feeling: This stage involves experiencing underlying emotions such as pain, guilt, and shame in response to a traumatic event.
Triggering Thought: At this stage, the client interprets a situation as threatening, which acts as a catalyst for anger.
Anger Feeling: The fight-or-flight response is activated, leading to physiological reactions such as trembling, shaking, rapid breathing, and an increased heart rate.
Impulse to Act: The client experiences a sense of being on "auto-pilot," feeling compelled to act out their anger.
Anger Expression: In this stage, anger is either acted out (e.g., shouting, blaming, or hitting objects) or suppressed (leading to emotional numbness and internalized distress).
The client were also introduced to the cycle of anger, which consists of five stages: triggering event, negative thoughts, emotional response, physical response, and behavioral response. Additionally, the therapist explained that in response to traumatic events, individuals often develop experiential avoidance as a coping mechanism. This involves avoiding distressing thoughts, feelings, and emotions in an attempt to escape painful memories. While experiential avoidance may provide temporary relief, it ultimately worsens psychological well-being over time. Therefore, it is essential to confront these emotions rather than avoid them.
The therapist then linked the fight-or-flight response to both the cycle of anger and experiential avoidance, helping the client understand the physiological and psychological processes involved. The the client were engage in first part of the therapy i.e. being open.
Table
The Following Table is Showing the Structure of SS-ACT
Phases Aim Intervention Content and Exercises
Introduction
General assessment, Informed consent, limit to confidentiality
Defining Anger and Experiential Avoidance (15 Minutes) The aim of the first step was to provide debriefing and psycho-educate the client two possible responses for trauma i.e. Anger and Experiential Avoidance Informal assessment
The willingness Dial Exercise for seeking consent to start intervention
Psycho-education: Defining anger and Experiential Avoidance

Open up
Acceptance (10 minutes) Developing willingness as an alternative to suppression
Acknowledgment of aggression and physical sensation associated with it Things you can control and you cannot control along with Tug of War Exercise
Anger as a Cloud

Defusion Training (15 minutes) Noticing thoughts as barriers to
action I’m having thought /Leaves on the stream
Say Though Aloud
Being Present
Self as context Differentiate between noticing and observing self The chessboard Metaphor
The Witness Anger Exercise/ Stream of Consciousness
Contact with the present moment Being fully aware Grouding Technique
Leaves on Stream
Do What Matters
Values clarification (10 minutes) To clarify what matters to clients in
order to identify a hierarchical
motivator to sustain behavior
change Values card sort
My super Hero
Committed action and rounding up (15 minutes) Encourage workable behavior
change The SMART Goal
The 10 minutes rule


Part 1: Being Open
The first pillar of the therapy is known as being open. It comprises on two elements i.e. acceptance and cognitive defusion.
Acceptance (10 Minutes)
The clients were explained that difficult emotions like anger are valid and natural. However, avoiding it or struggling against it often make it worst. Therefore, the aim is not eradicate the anger but change the relationship with it.
The clients were asked how do you normally respond when anger arises? Do you try to get rid of it or avoid it? This question brought experiential avoidance into focus and illustrate how avoidance strategies often fuel more anger. Then the clients were psycho-educated that how acceptance to these difficult emotions can make change in reaction. The concept were made comprehensible through two exercises. These exercises are listed below.


Exercise 1: Tug of War
It was explained to the client that imagine you are in tug of war with a big ugly and very strong monster (i.e. your anger). In between you and the monster, there is big pit and one you will fall if lose the war. Imagine you are trying to pull the rope, but the harder the monster pulls, you get closer to the pit.
The monster has endless energy but you are tired after a certain point of time. You can clearly see that you will lose the war. So what alternative do you see in the entire circumstance (This will develop an insight for acceptance). This thought provoking exercise brought acceptance for not pulling the rope may save from adverse fall. Dropping the rope may help you to fall in the pit. Therefore, the alternative to struggling with difficult emotion like anger is taking a stance for acceptance towards emotions, body sensation and thoughts.
Then the concept of acceptance was further clarified that sometime the word acceptance sound negative. However, acceptance doesn’t mean tolerating unnecessary pain or admitting defeat. Rather acceptance is willingness to experience uncomfortable emotion (anger) to access something better in life. Its about feeling what you feel when you feel it. If you learn the art to tolerate feelings of anger then you don’t have to suffer from suppressed anger and develop much more flexible set of actions.
Exercise 2: Anger as a Cloud

Anger as a cloud was another alternative activity for acceptance that was used with some students. The clients were instructed to close their eyes and imagine their anger as a storm cloud. Rather than trying to push the cloud away or change it, ask them to simply observe it, letting it pass through the sky of their mind. The cloud may stay for a while, but it doesn't have to control their actions. To encourage acceptance by allowing the client to sit with the feeling of anger without reacting to it.
Cognitive Defusion
The meaning of cognitive defusion was explained to the client. It means separate you stuck thought by recognizing that thoughts are just words rather than the truth. In other words the defusion refers to stepping back from the difficult thoughts and observe them as creations of the mind. The client were asked about the thought prov-k
Intervention Start Date
2024-09-19
Intervention End Date
2024-09-27

Primary Outcomes

Primary Outcomes (end points)
Repeated-measures ANOVA revealed a significant reduction in PTSD symptoms in the experimental group immediately post-intervention (F(3.38, 280.57) = 19.43, p < .001, η² = .19), with a significant time × group interaction (F(3.38, 280.57) = 8.78, p < .001, η² = .10). Gender analyses indicated minor differences but no significant
three-way interaction (time × group × gender).
Primary Outcomes (explanation)
The findings demonstrate SS-ACT as a feasible, culturally adaptable, and costeffective intervention for post-disaster adolescent populations, offering an immediate, Manuscript (without Author Details) Click here to view linked References first-line psychological support strategy. Implications for theory, clinical practice, policy, and future research underscore its potential integration into disaster-response frameworks and preventive mental health programs in resource-limited, disasterprone regions.

Secondary Outcomes

Secondary Outcomes (end points)
Long term impact of SS-ACT are effective and must be validated in future studies.
Secondary Outcomes (explanation)
The literature suggest that immidiate result are impactful for SS-ACT, the current study finding showed long term efficacy better than immifiate outcomes due to cultual variation.

Experimental Design

Experimental Design
The two-arm randomized multiple baseline design was used to assess the
efficacy of the SS-ACT. The single subject multiple baseline design has three types.
The first one is multiple baselines across participants, multiple baseline design across
subjects/participants and across settings. The multiple baseline design across setting
mean same subject is studied in different setting I.e. school, home, playground). The
multiple baselines across behavior means the same subject multiple behaviors have
been targeted for intervention. In the current study, multiple baseline design across
participants was used (Woidneck et al., 2014). Multiple participants with the same
problems were recruited for comparison. Furthermore, the non-concurrent sample
(e.g. the starting point of baseline and all subjects were not the same) was recruited.
The experimental group received one hour SS-ACT and control group were kept in
the waiting list.

Experimental Design Details
N/A
Randomization Method
Participants and Sampling
A total of 100 participants were chosen from 8 different educational institutes
in one villages of Taunsa named Maghrotha. The participants from both genders were
recruited equally, with an age range of 12–17 years. The sample size was determined
using the power analysis using G* Power.
Randomization Unit
Inclusion and Exclusion
To assess the efficacy of the intervention, the participants were be recruited
through a non-probability sampling technique. Non-probability sampling technique, in
which not each participant gets an equal chance of being selected in the current study.
In particular, the purposive sampling technique of non-probability sampling was used
to select the participants based on the purpose of the study. Participants were recruited
using a purposive sampling technique (Black, 2010). The inclusion criteria are as
follows:
(i) Only those participants were recruited in the present study who have
experienced any kind of natural disaster.
(ii) The participants were selected based on screening tools. Participants with
mild, moderate, or severe PTSD symptoms will be selected for intervention.
(iii) Only those participants were recruited in the study who do not have another
medical, substance abuse, or medication-induced disorder.
The exclusion criteria are listed below.
 Participants who have been part of any intervention program were not
recruited for the current study.
 Participants who are using any medication were recruited for the current study.
Was the treatment clustered?
No

Experiment Characteristics

Sample size: planned number of clusters
A total of 100 participants were chosen from 8 different educational institutes
in one villages of Taunsa named Maghrotha
Sample size: planned number of observations
85 participants completed the trial.
Sample size (or number of clusters) by treatment arms
85
Minimum detectable effect size for main outcomes (accounting for sample design and clustering)
85
Supporting Documents and Materials

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IRB

Institutional Review Boards (IRBs)

IRB Name
Medical Ethical Committee of the Medicine and Health Science Department at Universiti Malaysia Sarawak
IRB Approval Date
2024-07-09
IRB Approval Number
UNIMAS/TNC(PI)/09 – 65/01 Jld.3 (100)

Post-Trial

Post Trial Information

Study Withdrawal

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Intervention

Is the intervention completed?
No
Data Collection Complete
Data Publication

Data Publication

Is public data available?
No

Program Files

Program Files
Reports, Papers & Other Materials

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