David Rettew, MD. Associate Professor of Psychiatry, Oregon Health and Science University; Medical Director, Lane County Behavioral Health, Eugene, OR. Author of Parenting Made Complicated (Oxford University Press; 2021) and Child Temperament: New Thinking About the Boundary Between Traits and Illness (W. W. Norton & Company; 2013).

Dr. Rettew reports he is a committee member of PacificSource and receives royalties from Oxford University Press and Oakstone Publishing. This article was reviewed by Dr. Aiken, Editor-in-Chief, who concluded there is no evidence of commercial bias.