EFT is not as evidenced based like EMDR, and is a "take off" of EMDR., where clients are left on their own to do their own movements. EMDR also uses movements clients can do on their own like "Butterfly Tapping" to help ground them. The research backing EMDR protocols is extensive, while I am not saying EFT doesn't work for some people, it does not have the 30 years of research behind it. There is a reason for the EMDR protocol, which isn't so "complicated" once you practice it regularly, and I say this as a clinician. The protocols of EMDR are grounding for the client and needed to focus the client and heal the trauma fully.
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