Diane Ehrensaft, Ph.D. is a developmental and clinical psychologist, adjunct professor of Pediatrics at University of California San Francisco, and Director of Mental Health at the Child and Adolescent Gender Center, UCSF Benioff Children’s Hospital.    She is  author of The Gender Creative Child and Gender Born, Gender Made and co-editor with Dr. Colt Keo-Meier of The Gender Affirmative Model, .   She specializes in research, writing, clinical work, training, and consultation related to gender expansive children, and publishes and lectures both nationally and internationally on this topic. Dr. Ehrensaft is presently co-investigator in a four-site NIH grant studying the effects of puberty blockers and gender-affirming hormones in gender expansive and transgender youth and principal investigator in a companion four-site grant, The Gender Journey Project, studying the psychological experiences of prepubertal gender expansive children. She is also a member of the task force that has written version 8 of the WPATH standards of care, having worked on the newly introduced chapter on pre-pubertal children.