The Tapping Evidence Base
Trauma (other) · Anxiety

Effect of the Emotional Freedom Techniques on anger symptoms in Hwabyung patients: A comparison with the progressive muscle relaxation technique in a pilot randomized controlled trial

Kwak, H.-Y., et al. · Explore · 2020

Randomized trial👥 31 participants⚖️ vs. progressive muscle relaxation (PMR)Moderate rigor✓ Source-checked📍 South Korea
In plain English. Thirty-one Korean adults with Hwabyung — a recognized anger-suppression condition — were randomly split into a tapping (EFT) group and a group doing progressive muscle relaxation, four weeks of group sessions either way. Both approaches helped with anxiety, depression, and physical Hwabyung symptoms, but the tapping group saw a bigger drop in trait anger than the relaxation group. This was a small pilot study, so consider it an early signal rather than a final answer.

What they found

31
people took part

In this pilot RCT, EFT (n=15) and PMR (n=16) both improved Hwabyung symptoms, state anxiety, and depression; trait anger improved significantly more in the EFT group than PMR at post-treatment (between-group p=0.022), with EFT trait-anger score dropping about 13.4% (p=0.004).

How the study worked

Who took partKorean adults with Hwabyung (a culture-bound anger-suppression syndrome) recruited for a pilot trial (n=31)
What they didIn a randomized controlled trial, participants were randomly assigned to receive tapping or a comparison condition, then measured and compared.
Compared withprogressive muscle relaxation (PMR)
Measured withtrait anger, state anxiety, Hwabyung symptom scale, depression scale

💡 Where this could help

Picture someone with Hwabyung, a culturally recognized condition rooted in years of suppressed anger, who may find Western talk therapy frameworks don't quite fit their experience, or simply has no interest in sitting with a therapist at all. If tapping continues to outperform relaxation techniques specifically for anger in conditions like this, it points toward a culturally adaptable, self-administered tool that could be shaped around local understandings of emotional suffering and practiced privately, not just imported wholesale from Western psychology.

🔬 What to study next

Since EFT beat progressive muscle relaxation specifically on anger, it would be worth testing whether that edge shows up physiologically, in blood pressure reactivity or cortisol response to an anger-provoking cue, given that Hwabyung is a culturally recognized syndrome long associated with somatic anger suppression. A larger trial replicating this pilot's design, with more Hwabyung patients and biomarkers tracked over months, would help confirm whether tapping's anger-specific advantage holds and translates into measurable cardiovascular or stress-hormone benefits.

The full record

DesignRandomized trial
Participants31 people
PopulationKorean adults with Hwabyung (a culture-bound anger-suppression syndrome) recruited for a pilot trial
Comparison groupprogressive muscle relaxation (PMR)
Outcome measurestrait anger, state anxiety, Hwabyung symptom scale, depression scale
JournalExplore
Year2020
CountrySouth Korea
LanguageEnglish
MethodEFT / tapping
Publication typeStudy / trial
Verification✓ Confirmed against the primary source

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Cite this study

APA

Kwak, H.-Y., & et al. (2020). Effect of the Emotional Freedom Techniques on anger symptoms in Hwabyung patients: A comparison with the progressive muscle relaxation technique in a pilot randomized controlled trial. Explore.

This record is part of the Tapping Evidence Base — an openly-sourced, fully-referenced directory of the research on EFT/tapping. Explore more studies on Trauma (other) · Anxiety

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THE TAPPING EVIDENCE BASE Trauma (other) 31 participants WHAT THEY FOUND In this pilot RCT, EFT (n=15) and PMR (n=16)both improved Hwabyung symptoms, stateanxiety, and depression; trait… Randomized trial · 31 participants Kwak · 2020 · evidence.thetappingsolution.com