BackgroundThis study focuses on children living in foster families with a history of maltreatment or neglect. These children often show adverse mental health outcomes reflected in increased externalizing and internalizing problems. It is expected that these adverse outcomes are associated with increased parental stress levels experienced by foster mothers as well as foster fathers.MethodsThe study sample included 79 children living in foster families and 140 children living in biological families as comparison group. The age of the children ranged from 2 to 7 years. Mental health problems were assessed with the Child Behavior Checklist, while parenting stress was measured with a parenting stress questionnaire including subscales on the amount of experienced stress and the amount of perceived support. The Child Behavior Checklist assessments were based mainly on maternal reports, while the parental stress assessments were based on maternal as well as paternal reports.ResultsAs expected the results showed increased externalizing and internalizing scores for the foster children accompanied by increased parental stress experiences in the foster family sample (however only in the maternal, but not in the paternal stress reports). The stress differences between the foster and biological family groups disappeared, when the children’s mental health problem scores were included as covariates. Moreover, especially the externalizing scores were strong predictors of parental stress in both, the groups of foster and biological parents. The amount of perceived social support was associated with reduced parental stress, but only in the group of biological fathers.ConclusionThe emergence of parental stress in biological as well as foster parents is closely related to child characteristics (mainly externalizing child problems). Possible implications for the reduction of parental stress are discussed as a consequence of the present results.

Abstract. This paper focuses on the longitudinal relationships between foster children’s mental health problems and parental stress across a 1-year interval with three measurements. A sample of 94 foster children and a comparison group of 157 biological children and their families participated in this study. The age of the children was between 2 and 7 years. At the initial assessment, the foster children had been in their foster families since 2–24 months. Based on Child Behavior Checklist (CBCL) scores, the results indicated increased internalizing and externalizing mental health problems in the foster children group. Both mental health scores remained rather stable across the longitudinal assessments in foster as well as in biological children. Internalizing as well as externalizing scores were substantially correlated with parental stress in both samples. Moreover, changes in mental health scores were associated with changes in parental stress. However, cross-lagged panel analyses showed no clear pattern of temporal relationships between children’s mental health scores and parental stress. Implications as well as strengths and limitations of the current study are addressed in the Discussion section.