Was Cinderella just a fairy tale? Survival differences between stepchildren and their half-siblings.

The death of a parent, particularly the mother, is linked to a suite of negative outcomes across the life-course. Compounding concerns for child outcomes are expectations of poor treatment by step-parents after parental remarriage. Indeed, folk tales of step-parental abuse abound cross-culturally and are embedded into stories taught to children. To understand why child outcomes might be sensitive to levels of relatedness within the household, evolutionary-oriented research targets patterning in parental expenditure in ways predicted to maximize inclusive fitness. In particular, parents are expected to prioritize investments in their biological children. However, stepfamilies are only formed after children experience multiple unfortunate events (e.g. parental loss, poverty), blurring causal interpretations between step-parental presence and stepchild outcomes. Moreover, stepchildren have been shown to be integral to household functioning, caring for their half-siblings and stabilizing relationships. These results challenge narrow views of adaptive behaviour; specifically, that step-parents, unlike biological parents, do no stand to reap fitness benefits from the care that they provide to their stepchildren. To evaluate these critiques, we analyse the survival outcomes of stepchildren. We include over 400 000 individuals from across a natural fertility period (1847-1940) in the United States state of Utah and examine the consequences of parental loss and step-parental introduction. Our analyses yield three key results: (i) exposure to maternal loss in childhood is associated with elevated mortality risk, (ii) parental remarriage does not increase the risk of mortality among stepchildren compared to non-stepchildren who too had lost a parent, and (iii) stepchildren enjoy higher survival than their half-siblings within the same family. Ultimately, this work contributes to the increasingly recognized importance of cooperative relationships among non-kin for childcare and household functioning. This article is part of the theme issue 'Multidisciplinary perspectives on social support and maternal-child health'.

Parent-Child Relationships in Stepfather Families and Adolescent Adjustment: A Latent Class Analysis.

In the current study the authors drew on Waves I and III from Add Health to examine the closeness of parent-adolescent relationships in married mother-stepfather families (N = 1,934). They used latent class analysis to identify family constellations defined by adolescents' relationships with all of their parents: mothers, stepfathers, and biological nonresident fathers. In particular, the authors (a) identified the most common underlying patterns of adolescent-parent relationships in stepfamilies; (b) determined the background characteristics that predict membership in these groups; and (c) examined how adolescents in these groups fare with respect to depressive symptoms, delinquency, and substance use. The results indicate that adolescents' relationships can be represented with 4 latent classes. Adolescents in these classes differ on measures of adjustment, and many of these differences persist into the early adult years.

Parental Mindfulness and Dyadic Relationship Quality in Low-income Cohabiting Black Stepfamilies: Associations with Parenting Experienced by Adolescents.

Cohabitation is a family structure experienced by many Black children; yet, we have limited understanding of how personal and interpersonal processes operate within these families to influence the parenting provided to these children. Informed by both family systems theory and the spillover hypothesis and utilizing a model to account for the interdependence of the mother and her partner, the current study sought to understand the direct and indirect associations among parental mindfulness, the mother-partner relationship quality, and firm parenting practices in a sample of 121 Black cohabiting low-income stepfamilies. Assessment consisted of standardized measurements of maternal and male cohabiting partner reports on mindfulness (i.e., acting with awareness) and relationship quality (i.e., relationship satisfaction, ability to resolve conflict, and coparenting conflict) as well as adolescent report on parenting (i.e., parent's firm control). Mindfulness was directly related to each individual's own perceptions of relationship quality and some support emerged for a cross-informant link (e.g., mother's mindfulness related to partner report of relationship quality). Furthermore, maternal perceptions of relationship quality, as well as mindfulness operating through relationship quality, were related to youth reports of maternal firm parenting. The results suggest that both mindfulness and the relationship quality of adults are variables deserving attention when studying the parenting received by children in cohabiting stepfamilies. Clinical implications of the findings are considered.