Ellert R. S. Nijenhuis
PhD. A Dutch psychologist, psychotherapist, and researcher. He has engaged in the diagnosis and treatment of severely traumatized patients for more than three decades, and teaches and writes extensively on the themes of trauma-related dissociation and dissociative disorders.
He is a clinical and research consultant at Clienia Littenheid, Switzerland. His publications include many clinical and research articles and chapters, as well as the book Somatoform Dissociation (Norton, New York).
With Onno van der Hart and Kathy Steele he co-authored the book The Haunted Self: Structural Dissociation and the Treatment of Chronic Traumatization (Norton, New York). The first two volumes of the trilogy The Trinity of Trauma: Ignorance, Fragility, and Control (Vandenhoeck & Ruprecht, Göttingen) appeared in 2015. The third volume, Enactive Trauma Treatment will appear in November 2016.
The International Society for the Study of Trauma and Dissociation granted him several awards, including the Lifetime Achievement Award and The Pierre Janet Writing Award for the first two volumes of The Trinity of Trauma.