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This study examined whether coparenting during toddlerhood predicts children's later symptoms of attention deficit/hyperactivity disorder, oppositional defiant disorder, affective disorder, and somatic complaints. When children were 2 years old, 108 middle-class nonclinical families were observed in triadic interactions to assess two domains of dyadic coparenting (competitive and cooperative), as well as each parent's individual competitive behavior toward the spouse. Teachers and mothers reported children's symptoms of psychological problems at age 7. Independent of cooperative coparenting and each parents' individual harsh parenting, competitive coparenting predicted children's symptoms of ADHD and ODD. Interactions with child gender indicated that competitive coparenting predicted ADHD symptoms in boys (not in girls) and teacher-reported (not mother-reported) somatic complaints in girls (not in boys). ODD and ADHD symptoms were also predicted by fathers' (not mothers') individual competitive behaviors. The children of parents who were both low in competitive behaviors had the lowest teacher-rated symptoms of affective disorder.

This study examined whether emerging adults' attachment preference for their romantic partner is complementary to their attachment preferences for their mother, father, and friends using a cross-sectional research design. Participants were 1,021 emerging adults recruited in the Czech Republic (mean age ¼ 21.46, SD ¼ 1.55) who filled out questionnaires. The attachment preference for the romantic partner correlated inversely with the attachment preference for friends but not with the preference for the mother or for the father. Our regression analyses revealed that emerging adults who were currently in a romantic relationship and had a longer romantic relationship were more likely to prefer their partner and less likely to prefer their friends. However, those emerging adults were not necessarily less likely to prefer their parents. For females, the length of romantic relationship was positively linked to their preferences for their mother. Hence, the results of this study accord with the claim that emerging adults' attachment preferences are shifted to the romantic partner only from friends and not from the parents.

Introduction: Developing a firm sense of identity is a critical developmental task in adolescence and emerging adulthood, but little or no empirical research exists regarding individuals who firmly form negative identities and psychosocial beliefs. This study examined the formation of negative identities in youth and its association with psychosocial beliefs in terms of variableoriented psychosocial facets (i.e., dichotomous beliefs, cynicism, and social distrust) and personoriented psychosocial profiles. Methods: A total of 2313 young Japanese people (70.9% were females) aged 18-25 years answered the self-report questionnaire. Results: We consequently found that individuals with negative identities possessed problematic psychosocial facets, such as high dichotomous beliefs and cynicism, as well as low social trust. Furthermore, individuals with negative identities had profile characterized by strong hostility toward others/societies. Conclusions: Overall, our study provided a comprehensive understanding of how youth with negative identities face difficulty in constructing relationships with society, which has been neglected in prior research.Forming a firm sense of identity is one of the primary developmental tasks during adolescence and emerging adulthood (Arnett, 2000;Erikson, 1968). Whereas a great deal of research has been conducted on identity development, contemporary research has been limited by the fact that, in attempt to understand problematic identities, the main focus has been placed on how people fail to develop positive identities, with Erikson's theory that identities consist of both positive and negative sides being neglected (Hoare, 2013). A firmly formed negative sense of identity-hereafter, referred to as "negative identity" (Erikson, 1968;Hihara, Sugimura, & Syed, 2018)-is assumed to be one of the most severe outcomes of problematic identity resolution, and is not regarded as simply equating to a lack of positive identity. Erikson (1968) and other theorists (Hauser, 1972;Hoare, 2013) proposed that youth with negative identities are likely to have problematic beliefs in terms of how they relate to society (i.e., dichotomous beliefs, cynicism, and social distrust). Such psychosocial beliefs interfere with youth engagement in prosocial behaviors and enable youth to easily engage in radical/extreme behaviors, such as delinquency (Hauser, 1972), criminality (Silverstein, 1994), and terrorism (Knutson, 1981; and these cannot be fully understood in terms of a lack of positive identity. Consequently, the main goal of this study is to contribute to research on identity by providing empirical evidence of a relationship between negative identity and psychosocial beliefs, which has been largely unexplored in empirical studies. Gaining an understanding of negative identity can open a novel path for researchers and

This article appeared in a journal published by Elsevier. The attached copy is furnished to the author for internal non-commercial research and education use, including for instruction at the authors institution and sharing with colleagues.Other uses, including reproduction and distribution, or selling or licensing copies, or posting to personal, institutional or third party websites are prohibited. a b s t r a c tThis study tested Bowlby and Ainsworth's hypothesis that a hierarchy of caregivers exists whereby infants prefer one caregiver over another when distressed. We examined parent gender (mother vs. father), primary caregiver status (defined as the parent who spent most time with the infant and performed most of the caregiving tasks), and role of toddlers' history of attachment security with each parent, as predictors of toddlers' preference for a particular caregiver when the toddlers are distressed and when they are content. Infants' attachment security with each parent was assessed at 12-15 months. At 24 months, mother-child and father-child interactions were observed in triadic (mother, father, toddler) home interactions. When distressed, regardless of the security of their attachment to each parent, toddlers more often interacted with the primary caregiver. When content, toddlers did not show this preference. As expected, toddlers' recovery from distress was predicted by their security of attachment with the parent whom they approached when distressed.

According to family systems theory, children's emotional development is likely to be influenced by family interactions at multiple levels, including marital, mother-child, and father-child interactions, as well as by interrelations between these levels. The purpose of the present study was to examine parents' marital conflict and mothers' and fathers' distressed responses to their infant's negative emotions, assessed when their child was 8 and 24 months old, in addition to interactions between parents' marital conflict and their distressed responses, as predictors of their toddler's negative and flat/withdrawn affect at 24 months. Higher marital conflict during infancy and toddlerhood predicted both increased negative and increased flat/withdrawn affect during toddlerhood. In addition, toddlers' negative (but not flat) affect was related to mothers' distressed responses, but was only related to father's distressed responses when martial conflict was high. Implications of this study for parent education and family intervention were discussed.

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