Kendra Hurley mentions Power of Two in this article for The New School Center for New York City Affairs:
Fortunately, a growing body of research suggests that a caregiver who is generally warm, nurturing and responsive to a baby’s cues can help to strengthen parent and child bonds and buffer young children from the potentially brutal impact of conditions common to homelessness and poverty. Such research has also begun to identify mental health and parenting interventions that promote such nurturing parenting, and that can be particularly effective in helping parents living in the stressful circumstances common to poverty, including overcrowding and homelessness.