Marianne Bentzen is a somatic psychotherapist and author. She has also taught and supervised mental health professionals internationally since 1982. She has presented at more than forty international and national conferences and written numerous articles and books.

Since the early 1990s, she has developed the theory of Neuroaffective Developmental Psychology (NADP), which bridges personality development, brain development, trauma theory and evolutionary psychology as well as emotional training programs and assessment tools with her friend and colleague, psychologist Susan Hart. A long-time meditator, she connects all this with meditative practice and wisdom research as well as emotional intelligence and personal development.