[1] In the book, Miedzian argues that societal norms in the United States drive boys, but not girls, towards violent behaviour.

She frames the commonality of male violence mostly as a consequence of their environments, rather than inherently biological, although she notes that testosterone levels in some boys and a few girls, does contribute.

[2] The book proposes solutions including deepening connections between fathers and their newborn children, and lessons on conflict resolution at school[1] and in the home.

She was also invited to speak about her findings at the United States House Select Committee on Children, Youth, and Families.

[7] Feminist academic Lynne Segal wrote in the New Statesman that the book over-simplified the issues, and focussed too much on the responsibility of individuals rather than considering the impact of capitalism and consequences of American colonialism and imperialism.