Dr. Jana Reiss and Dr. Benjamin Knoll recently released a book about a survey they performed and the results, specially about Millennials. The book started 2011 when Dr. Reiss was interested in childhood and adolescents within Mormonism. But it then changed when Jana became interested in how those children are as adults, how the religion informed them and how those teachings in childhood might affect adult retention and religiosity. She then created a survey which was to see if there was intergenerational change and difference within the Mormon community itself. The book is a result of the survey.
You can find out more about them and the book by going to: thenextmormons.org