The BERRI assessment has now been used over 22,000 times to date, meaning we now have one of the largest data sets of children in the UK, particularly of children in care. Our commitment is to use this data not just to refine our tools, but to improve outcomes for children by supporting evidence-based decision-making in practice and contributing to public policy.
At any one time we have several research and development projects on the go. We adhere to rigorous standards of ethics and data protection and only use BERRI data to build up our normative and validation data, which benefits all users. Any more exploratory research is only undertaken with consent from the subscribing organisations and/or the people who participate in the study. We have tight policies about data protection and researchers never have access to identifying information about individuals.

Title: Comparing the needs of children in independent agency and local authority foster care in the UK
Published in: Adoption & Fostering, Online First, January 2026
Link: https://journals.sagepub.com/home/AAF
Author(s): Miriam Silver, Kelly Chan, Ailsa McGrath, Saul Hillman
A landmark study comparing the characteristics, psychological needs and stability of children/young people in independent fostering agencies (IFA) versus in-house local authority (IHLA) foster placements using data from the BERRI assessment. It reveals that children in IFAs are typically older and experience greater psychological needs than children in IHLA fostering. Despite these differences, children in both placement types were found to be similarly susceptible to risk, and demonstrated comparable stability and trends in mental health outcomes.
Title: Placement instability in relation to behavioural and emotional wellbeing amongst children in residential settings, foster care, and in the community
Published in: Developmental Child Welfare, Online First, January 2026
Link: https://journals.sagepub.com/home/DCW
Author(s): Stefanie Baios, Nura Alkathiri, Meryl F Westlake, Miriam Silver
The findings of this study support the link between events that make the child feel less stable and their behaviour and mental health.
It is already well known that multiple placement changes have a negative impact on children’s behaviour and wellbeing. This study used BERRI data to expand the way we looked at placement instability to include changes in key relationships or the child knowing about a potential change of placement, and shows that these can also function as destabilising factors. This aligns with attachment theory, which shows how critical it is for children to have lasting, attuned relationships, and proposes that repeated disruptions in caregiving relationships are associated with difficulties in emotional regulation and limited identity formation. We know that a lack of enduring secure relationships alters developmental trajectories, with enduring impacts into adulthood. Findings in this new research suggest that Placement Instability and Behavioural and Emotional Wellbeing issues may be interrelated. Therefore interventions addressing both may be most effective, particularly for children in residential settings. However, our literature review showed no existing interventions for children in care that explicitly target the effects of Placement Instability, and almost all existing interventions to support relationships with caregivers focused solely on children in foster care.
Title: Risk vulnerability among children living in residential care in England: A study using multi-level models
Published in: Child Abuse & Neglect, Volume 167, September 2025
Link: https://www.sciencedirect.com/journal/child-abuse-and-neglect
Author(s): Meryl F. Westlake, Dominika Dykiert, Saul Hillman, Miriam Silver
This study aimed to investigate the patterns of vulnerability to harm from external antisocial pressures (such as drugs, alcohol, criminal exploitation, sexual exploitation or negative peer influences) alongside risk to self (of self-harm and/or suicide) among children living in staffed settings like residential care and supported accommodation. It found that children in semi-independent accommodation had higher levels of harm from external risk than those in children's homes. It also found that children who experience a greater number of recent life events have higher levels of risk vulnerability in residential care, both in terms of vulnerability to external risk and harm to self. Older children appear vulnerable to greater harm from external risk and girls appear more vulnerable to greater risk to self. Supported accommodation for young people aged 16 to 17 is designed to provide increased independence and lighter touch support as they transition towards independent living. Ofsted rules say that it is not to be used where children have higher levels of need and require care. However, at the moment, BERRI data shows that there are many young people in supported accommodation with higher care needs and higher levels of risk. This research suggests policy makers need to adequately address the harm from external risks that children face in this setting and the appropriateness of supported accommodation as a placement option for this age group.
Title: Testing the structure of the BERRI using exploratory and confirmatory factor analysis
Published in: Children and Youth Services Review, Volume 156, January 2024
Link: https://www.sciencedirect.com/journal/
children-and-youth-services-review
Author(s): Andrei D. Viziteu, Luís Costa da Silva, Julian Edbrooke-Childs, Saul Hillman, Miriam Silver, Meryl Westlake, Jasmine Harju-Seppänen
This study looked at the BERRI questionnaire to see whether it was reliably measuring the domains that it claims to cover, and whether the five categories within BERRI (Behaviour, Emotional wellbeing, Risk to self and others, Relationships, and Indicators of psychiatric or neurodevelopmental conditions) are statistically supported. Tests were done to check the structural validity and internal consistency of BERRI. The results showed that the tool had high internal consistency, was statistically strong, and the factor structure was clinically meaningful and related to the existing five categories.
However it also suggested that

Title: A systematic review and meta-analysis of the type and prevalence of mental health disorders and symptoms among children living in residential care
Published in: Developmental Child Welfare, Volume 5 Issue 4, December 2023
Link: https://journals.sagepub.com/home/DCW
Author(s): Meryl Westlake, Saul Hillman, Asa Kerr-Davis, Andrei Viziteu, Miriam Silver, Dominika Dykiert
Using BERRI data, this review was the first to establish the type and prevalence of mental health disorders and symptoms among children in residential care. Almost half of children living in residential care had behaviours indicative of a clinical level of mental health concern and trauma-related symptoms were common among the children. It suggests that children and adolescents with higher levels of mental health symptoms and disorders might well be managed in residential care settings, given the higher levels of support.
Dive deeper into the analysis with BERRI’s Research & Practice webinar series. In these 30-minute sessions, we explore the findings of our recently published research and hear from voices in the children’s social care sector about its implications on practice and policy. Register your interest below.