She completed her PhD in psychology at Trinity College Dublin in Ireland in 2015. Construction of Single Mothers’ Roles as Gatekeepers Between Children and Nonresident Fathers Elizabeth Nixon and Kristin Hadfield Journal of Family Issues 2018 39 : 14 , 3732-3752 “He’s Had Enough Fathers”: Mothers’ and Children’s Approaches to Mothers’ Romantic Relationships Following the Dissolution of Previous Partnerships Kristin Hadfield and Elizabeth Nixon Journal of Family Issues 2016 39 : 1 , 271-295 “He’s Had Enough Fathers”: Mothers’ and Children’s Approaches to Mothers’ Romantic Relationships Following the Dissolution of Previous Partnerships Kristin Hadfield and Elizabeth Nixon Journal of Family Issues 2016 39 : 1 , 271-295 Construction of Single Mothers’ Roles as Gatekeepers Between Children and Nonresident Fathers Elizabeth Nixon and Kristin Hadfield Journal of Family Issues 2018 39 : 14 , 3732-3752 Construction of Single Mothers’ Roles as Gatekeepers Between Children and Nonresident Fathers Elizabeth Nixon and Kristin Hadfield Journal of Family Issues 2018 39 : 14 , 3732-3752 “He’s Had Enough Fathers”: Mothers’ and Children’s Approaches to Mothers’ Romantic Relationships Following the Dissolution of Previous Partnerships Kristin Hadfield and Elizabeth Nixon Journal of Family Issues 2016 39 : 1 , 271-295 Dr. Kristin Hadfield is Lecturer in positive psychology at Queen Mary University of London. This study explores single mothers’ roles as gatekeepers in the relationship between children and nonresident fathers in families, where fathers do not have a history of shared residence with their children.