I have been struggling for a while to find an easy to use developmental checklist that is in the public domain for babies and infants under 3 years. I am very familiar with more extensive testing measures such as the Bayleys screener etc and with measures such as Ages and Stages and BITSEA. But the former requires specialist skills and the latter are both copyright and not exactly what I want. How does, for example, a family support worker, get a sense of broad developmental milestones of a young infant? Are there measures for health visitors perhaps that have been well validated and normed.