EFT Tapping Research Statistics: 30+ Peer-Reviewed Studies Summarised
A reference table of the peer-reviewed EFT tapping research, organised by topic. Every study links to its PubMed entry or journal page. We've included the design and sample size for each so you can judge weight at a glance.
Where the evidence is weaker or contested, we flag that explicitly. For deeper context on any single study, follow the link in the table to the source.
Anxiety
Strongest evidence domain. See our EFT for anxiety page for the long-form treatment.
StrongestClond 2016
Large pre–post effect on anxiety symptoms (Hedges' g = 1.23).
Feinstein 2019
Substantial anxiety improvement in fewer sessions than typical CBT course.
PTSD and trauma
Multiple RCTs and a meta-analysis. The Church 2013 veterans finding (90% no longer meeting PTSD criteria) is one of the largest single-study effects in any psychological-treatment research. See EFT for PTSD.
Karatzias 2011
Equivalent and significant improvements on PTSD outcomes in both arms.
Church 2013
90% of EFT participants no longer met PTSD criteria vs 4% in waitlist.
Sebastian & Nelms 2017
Large effect size; authors concluded EFT meets evidence-based PTSD treatment criteria.
Church 2018
Significant changes in expression of six stress-related genes after EFT for PTSD.
Cortisol and stress biomarkers
See cortisol page.
Church 2012
Cortisol dropped 24% in EFT group vs 14% supportive interview, 0.6% rest.
Stapleton 2020
Cortisol dropped 43% in EFT group; significantly greater than control arms.
Bach 2019
Cortisol -37%, heart rate -8%, BP -6 to -8%, salivary IgA +113%.
Depression
Two meta-analyses, both with large effect sizes. See EFT for depression.
Nelms & Castel 2016
Large effect on depressive symptoms (Cohen's d = 1.31). Durable at 90+ days.
Vural Doğru & Utli 2024
Replication of Nelms & Castel with RCT-only filter; effect size 1.27.
Chronic pain
Smaller but consistent. See EFT for pain.
Stapleton 2022 (chronic pain fMRI)
Pain severity -21%, anxiety -37%; decreased connectivity in pain-modulating brain regions.
Phobias and fear
One of the foundational EFT research areas. See EFT for fear and phobias.
Wells 2003
Significantly greater reduction in phobic anxiety on behavioural and self-report measures.
Salas 2011
EFT reduced phobic anxiety more than diaphragmatic breathing comparison.
Food cravings and weight
The Stapleton team at Bond University drives this evidence base. See EFT for weight loss.
Stapleton 2016 (Food for Thought)
Significant reductions in food cravings, dietary restraint; weight changes maintained at 12 months.
Sleep
Honest about limits — the Souilm 2022 trial actually favoured sleep hygiene over EFT for sleep quality in elderly adults. See EFT for sleep.
MixedSouilm 2022
Both groups improved; sleep hygiene reached 100% good sleep quality vs 73% for EFT.
Where the evidence is weakest
- Vagus nerve and HRV claims.Plausible mechanism, no controlled trial with HRV as the primary outcome. See vagus nerve page.
- "Calms the amygdala."No fMRI study has directly measured amygdala deactivation during EFT. See stress response page.
- Money mindset, manifestation, abundance.No clinical evidence. We don't make claims here.
Independent replication is the next bar
A note on the field as a whole: many of the published EFT studies have been conducted by researchers in the EFT community. The direction is consistent across studies, but larger independent replications would strengthen the evidence base further. We watch for this and update accordingly.
Last reviewed: June 2026. We update this page when new peer-reviewed evidence is published.
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