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Children with developmental disabilities (e.g. learning disability and autism) often struggle with handwriting skills. This study aims to implement an adapted handwriting programme for children with developmental disabilities to improve their handwriting skills.

Six children with developmental disabilities aged 9–15 years received an adapted Handwriting Without Tears® (HWT) programme in small groups over eight weeks. The programme was delivered by typical teaching staff (i.e. paraprofessionals) at a special education school following a brief training session and with ongoing supervision. A range of measures assessed the children’s handwriting and related skills. Social validity interviews were conducted with school staff following the intervention to evaluate the programme’s acceptability.

Typical teaching staff implemented the handwriting programme with 92.3% average fidelity and delivered a minimum of three sessions per week. Social validity interviews demonstrated the acceptability of the intervention to school staff. After eight weeks of intervention, all children improved their handwriting on various assessments. Improvements were only partially maintained at follow-up.

This study supports the feasibility of using an adapted HWT programme to teach handwriting to children with developmental disabilities in special education settings. Typical teaching staff can be trained to support the delivery of the programme to children in small groups.

With a historic lack of attention to synthesis methods such as systematic review and meta-analysis and a lack of randomised controlled trials, the evidence base for behavioural interventions for children and adults who are autistic or are diagnosed with developmental disabilities is patchy. The Sharland Foundation Developmental Disabilities Applied Behavioural Research and Impact Network (SF-DDARIN), a network of like-minded researchers and practitioners across the UK, aims to address this. The purpose of this paper is to describe the network’s work and provide the context for the remaining articles in the special issue that exemplify network projects.

In this case study paper, the authors describe how the SF-DDARIN works and is resourced, detailing the process used to maximise research opportunities by facilitating network members working together. The authors outline the progressive research steps that the SF-DDARIN has identified are needed to develop and improve the evidence base for behavioural interventions systematically and, with examples, describe how the network delivers these steps.

Since its establishment in 2016, the SF-DDARIN network members have collectively worked on more than 53 projects involving over 50 researchers, had over 120 special schools contribute to projects and have recruited over 500 participants. This has been achieved through funding from the Sharland Foundation, primarily to cover the staffing costs of a small support team and internship partnerships with external organisations. Some projects have attracted external funding.

SF-DDARIN may provide an innovative, effective and resource-efficient model for other groups seeking to develop and extend their evidence base in developmental disability research.