Abstract: Motherhood has been deemed a normal crisis, given the significant psychological, biological, and neural changes surrounding pregnancy and the postpartum period. These challenges can become more complex as they are closely related to the parent’s own selfdevelopment and sense of self-efficacy grounded in their personality prior to parenthood. The normal crisis of motherhood may be further complicated by addiction. Considering the evidence of the negative impact and poor developmental outcomes of children born to mothers with substance use disorders, special attention must be paid to addiction in this context. This paper is a review of evidence on the challenges of parenthood, particularly when affected by addiction. We explore the centrality of object relations in personality development and parenting practices and discuss the problem of maternal addiction from multiple perspectives, particularly Blatt’s (1991a) two-polarities model of personality development. Key words: motherhood, addiction, psychoanalysis, object relations, personality. PERSONALITY AND MATERNAL ADDICTION 3 Introduction Mothers are the first environment their offspring encounter in their process of development; therefore, it is essential to understand how maternal behavior, sensitivity, and personality interplay with the developing psyche of the child. Motherhood can be a very challenging task given the significant psychological, biological, and neural changes surrounding pregnancy and the postpartum period. The transition to parenthood is also characterized by changes in interpersonal interactions, social demands and expectations of being a parent, conscious and unconscious wishes and fantasies related to their child and the parental experience, and sometimes disappointments from not meeting the individual parenthood ideals (Priel & Besser, 2001; Von Mohr, Mayes, & Rutherford, 2017). These challenges –typical of parenthood– can become more complex as they are closely related to the parent’s own self-development and sense of self-efficacy, grounded in their personality prior to parenthood. Therefore, maternity could be thought of as a particularly vulnerable period for women already struggling with self-control and emotion dysregulation and this may be particularly true in mothers with substance use disorders (SUDs). Considering the growing evidence underscoring the negative impact and poor developmental outcomes of children born to mothers with SUDs (e.g. Salo & Flykt, 2013), special attention must be paid to addiction in the context of maternity in order to minimize risk and prevent the perpetuation of SUDs across generations. The structural-developmental psychodynamic –or “two polarities”– model of personality development (Blatt, 1991a) offers a valuable framework to consider addiction in the context of motherhood. Grounded on cognitive, humanistic, and psychodynamic theories of development, the model was initially developed to empirically study depression (Shahar & Mayes, 2017). Blatt PERSONALITY AND MATERNAL ADDICTION 4 (1991a) proposed that as human beings develop, they are faced with the dialectic transaction between fostering and tending to relationships and attachment bonds (i.e., interpersonal relatedness or anaclitic processes), and developing an independent and fully differentiated sense of self (i.e., self-definition or introjective process). Extreme reliance on one process over the other may lead to psychopathology or severe distortions of experiences and result in extremely dependent or self-critical strategies in interpersonal interactions (Berman, 2017; Blatt, 1991a; Blatt & Luyten, 2009). However, under favorable circumstances, humans are able to integrate both polarities into a mature, integrated, and socially embedded sense of self. While the two polarities model was originally focused on individual personality development and initially focused on the first 11 years of life, it was later expanded to consider development across the lifespan (Blatt & Luyten, 2009). Further, it has been argued that the model might facilitate understanding of the intergenerational transmission of attachment styles and psychopathology, including SUDs (Beebe & Lachman, 2017; Priel & Besser, 2001; Blatt and Luyten, 2013; Liden & Suchman, 2013; Luyten, 2017; Soenens, Vansteenkiste, & Luyten, 2010). This paper is a review of evidence on the challenges of motherhood, specifically in relation to substance abuse. The paper will explore the centrality of object relations in personality development and parenting practices. Next, in line with recommendations by Blatt and Luyten (2009) inviting research efforts to be oriented towards the examination of the impact of neurobiological and genetic dimensions on psychological development, we discuss the problem of addictions from multiple perspectives, incorporating object relations, Blatt’s (1991a) personality organizations, and a recently proposed developmental model of addiction (AlvarezMonjaras, Mayes, Potenza, Rutherford, 2018). Motherhood: A normal crisis PERSONALITY AND MATERNAL ADDICTION 5 Motherhood has been considered a “normal crisis” (Pines, 1972). Although highly rewarding and meaningful under ideal circumstances, becoming a parent may also be stressful and overwhelming. The complexity of the emotional experiences surrounding motherhood reflects both the hormonal, neurobiological, social, and intrapsychic processes that take place during the transition to motherhood, as well as this being a period of time where mothers revisit their own memories and representations of being parented to (1) internalize the newborn, (2) resolve early conflict, and (3) identify available resources to apply in the new caregiving tasks (Pines, 1972; Priel & Besser, 2001; Von Mohr et al., 2017) In line with Blatt’s (1991a) model, the internal world of mothers and their children –both during and after pregnancy– are essential to understand motherhood (Blum, 2017). Object relations are dynamic systems or “internal working models” that guide behaviors, attitudes, and expectations, and help an individual make sense of themselves, others, and relationships (Auerbach & Diamond, 2017). Even before birth, an expectant mother may hold a mental representation of the newborn, with a series of conscious and unconscious fantasies associated with them. Some mothers, for instance, may have idealized phantasies of their unborn child (e.g., “perfect in every way”, “a fulfilment of my life”, Sorenson & Schuelke, 1999), others may talk about fantasies of symbiosis or fusion (e.g., envisioning themselves encompassing the fetus, Blum, 2017), or be more anxious and concerned by persecutory fantasies (e.g., parasitic fetus or depletion, Raphael-Leff, 1996). Considering that these representations guide behaviors and attitudes, some mothers might feel better prepared than others to take on the caregiving task. In line with this, studies have shown that the content of internal representations can have a considerable impact on mother-child interactions. For instance, fantasies around childbirth can impact the decision of primiparous mothers regarding whether or not to request cesarean section PERSONALITY AND MATERNAL ADDICTION 6 –this was especially true for mothers that were more inclined to project negative or unwanted thoughts, feelings, fantasies, and motives (Handelzalts, Fisher, Sadan & Goldzweig, 2017). Likewise, other studies have reported that mental representations of breastfeeding and the feeding interaction (e.g., comfort, rejection, crying, etc.) may also impact how mothers approach breastfeeding, and even the decision to switch to bottle-feeding (Kronborg et al., 2015; Sayre et al., 2001). Mental representations impacting parenting behavior extend beyond infancy, including during play interactions and in relation to parental control practices (Crawford & Benoit, 2009; Soenens et al., 2010). The quality (i.e., coherence, flexibility, and richness) of internal representations may also affect a mother’s capacity to make sense and adapt their own behavior to sensitively and appropriately respond to their child’s preverbal demands and mental states (Alvarez-Monjaras, McMahon & Suchman, 2017; Fonagy, Gergely & Target, 2007; Fonagy, Steele, Steele, Moran, & Higgitt, 1991). For instance, mothers with disengaged representations in the Adult Attachment Interview (George, Kaplan, & Main, 1985) tend to be less sensitive, more passive, and less encouraging, while those with more coherent representations engage in less negative (e.g., aggressive or intrusive) and more positive (e.g., warm or soothing) parenting practices (Slade, Belsky, Aber & Phelps, 1999; Sokolowsky, Hans, Bernstein, & Cox, 2007). Thus, the overall quality of mental representations allows for mothers to engage more sensitively with their child. Maternal object relations and the internal world of the child Recent studies have argued that not only do these object representations influence maternal behaviors but they might also be passed on across generations via the mother’s capacity to think about and interpret their own and their infant’s behavior in terms of mental states and intentions (termed reflective functioning; Fonagy et al., 2007). A caregiver’s reflective PERSONALITY AND MATERNAL ADDICTION 7 functioning –inherently associated with mental representations (Alvarez-Monjaras et al., 2017)– has been considered the missing link in the well-known intergenerational transmission of attachment patterns and relational knowledge (Fonagy & Allison, 2014). Through these marked, ostensive, and contingent feedback reactions towards the infant’s automatic behavioral expressions (i.e., parental sensitivity), the caregiver slowly sensitizes the child to primary and secondary mental states and intentions in oneself and others (Fonagy & Bateman, 2008; Fonagy et al., 2007). This “natural pedagogy” (Csibra & Gergely, 2009) fosters self-awareness and selfregulation capabilities by allowing