“…In the first stage, potential items for the measure were generated based on a careful review of existing measures and wider research literature of DMRs in the context of early mother-infant relational disturbance. This included psychotherapy literature (Baradon et al, 2005;Freiberg, 1975Freiberg, , 1980Lieberman & Van Horn, 2008;Stern, 1985;Winnicott, 1965Winnicott, , 1971, attachment and reflective function literature (Fonagy, 2001;Fonagy et al, 2004;Solomon & George, 2011), DMRs activated during pregnancy and postpartum (Ammaniti, Tambelli, & Odorisio, 2013;Beebe & Lachman, 1994;Brockington, 2011;Crawford et al, 2009;Madigan et al, 2006), and observational studies (Beebe & Lachman, 2002;Beebe et al,2010;Beebe & Steele, 2013;Biringen et al, 2005;Lyons-Ruth et al, 2004).…”