"We understand what kind of struggle it is," Jack Grafe told "GMA." A set of twin brothers who transitioned from female to male are sharing their story in hopes of helping others who may be struggling ...

If you're a female twin, your brother might've rubbed off on you in the womb. Scientists have known for a long time that female animals in a male-female twin set get all sorts of funny effects from ...

Behavioral and physical differences between identical twins are fascinating because they are unexpected. Many people assume that when identical twins differ they do so because they are treated ...

🛍️ The 121 best Amazon Black Friday tech and gadget deals 🛍️ By Michael Jaffe and Tracy Jaffe/The Conversation Published Sep 15, 2023 6:00 PM EDT This article is republished from The Conversation.

In the early 1980s I met and began an unofficial training with Anna Freud—Sigmund Freud's youngest daughter, and his only child to follow him into psychoanalysis. I was a young social scientist who ...