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July 9, 2025 15 mins

Learn more here: https://bit.ly/dual-brain-psychology-frederic-schiffer-md 

What is Dual‑Brain Psychology? 

Dr. Fredric Schiffer, a Harvard Medical School assistant professor and research associate at McLean Hospital, proposes that our minds consist of two distinct voices—each rooted in one hemisphere of the brain. One hemisphere often houses a more mature, resilient voice, while the other carries an emotionally wounded, immature part shaped by early trauma. 

The goal of Dual‑Brain Psychology therapy is to shift dominance from the wounded side to the healthier side, encouraging the mature half to act as a co‑therapist and guide healing. 

How does it work? Dr. Schiffer uses simple yet powerful techniques to stimulate one hemisphere at a time: 

Lateral visual-field stimulation: Patients use sunglasses or even junk mail to block the view to one side, thereby activating the opposite hemisphere. Within seconds, cravings, anxiety, or depressive feelings shift dramatically depending on the side stimulated. 

Direct dialogue: The therapist may address the wounded side like a wounded child—“We need you to help”—encouraging its participation and cooperation. 

Photobiomodulation: Near‑infrared light therapy through the forehead targets one hemisphere, showing promise for opioid addiction treatment. A clinical trial, supported by NIH, is currently underway.

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