
Developing an ethically sound online recruitment strategy to engage millennial parents of autistic children in the U.S. Using purposive and snowball sampling across digital platforms and autism organizations, 19 eligible participants were recruited from over 600 enquiries. The study highlights the need for strategic recruitment strategies, trust signals, and platform-specific behaviors in recruiting vulnerable populations online. The experience produced an 8-step guide and a 6-step participant integrity checklist to support rigorous, inclusive, and fraud-resistant online recruitment, which will be shared.