In 2010, Elizabeth Marquardt and a team of family scholars produced a deeply disturbing 140 page report entitled, "My Daddy's Name is Donor: A New Study of Young Adults Conceived through Sperm Donation." According to the report, "on average, young adults conceived through sperm donation are hurting more, are more confused, and feel more isolated from their families. They fare worse than their peers raised by biological parents on important outcomes such as depression, delinquency and substance abuse. Nearly two-thirds agree, 'My sperm donor is half of who I am.' . . . More than half say that when they see someone who resembles them they wonder if they are related. Almost as many say they have feared being attracted to or having sexual relations with someone to whom they are unknowingly related."