“…Of particular concern are the neurological, emotional, behavioral impacts of in utero teratogen ("malformation-causing") exposure (Chasnoff, 1989;Chasnoff et al, 1990Chasnoff et al, , 1998Chasnoff et al, , 2005Chasnoff et al, , 2015Chasnoff et al, , 2018Latini et al, 2006;Ragusa et al, 2021;Ross et al, 2015) and innumerable other forms of trauma and toxic stress that impact medical and mental health (Danese & Lewis, 2017;Fleming et al, 2018;Gilliland et al, 1999; Chapter 4: Cultural and Contextual Factors of Infancy Through Early Childhood 97 Goldstein et al, 2021;Schwarze et al, 2013;Herzog & Schmahl, 2018), even transgenerationally (Jawaid et al, 2018;Lehrner & Yehuda, 2018;Perroud et al, 2014;Serpeloni et al, 2017). This chapter introduces the reader to theory and research related to early childhood development, including the bi-directional developmental impact children and parents/caregivers have on each other (Crouter & Booth, 2003;Gouze et al, 2017;Schrock & Woodruff-Borden, 2010;Simmons et al, 2021).…”