Despite references to pervasive knowledge gaps in the literature, significant information has been accumulated about children's experiences of parental mental illness. Considerable variability in research findings and tensions remain unresolved. For example, evidence is mixed as to children's knowledge and understanding of mental illnesses and how best to deploy resources to help them acquire optimal information. Furthermore, children's desire to be recognized as important to their parents' well-being conflicted with adults' perceptions that children should be protected from too much responsibility. Nevertheless, the cumulative evidence remains a key reason for advocating for psychoeducation and peer-support group interventions for children, which are endorsed by child and adult study participants alike.