In the US, the increase in complex family structures means that about 1 in 6 American children today live with a step- or half-sibling before kindergarten. Paula Fomby, who along with Joshua Goode and Stephanie Molborn conducted a study assessing the impact on chlidren’s aggressive behavior of residing with a single parent or step-parent and with a step- or half-sibling, is interviewed here.

More about Fomby interviewed on her work examining family structures and sibling relationships >