Shocking research: People with Down syndrome are happy. So are their parents.

When people learn that my son Silas and his wife Jenn Power adopted a pair of identical twins with Down Syndrome, they often say one of two things: "I could never do that," or "You must be saints." I love Silas and Jenn beyond measure, and admire them hugely, but I can attest they are not saints. The explanation for their decision to adopt Josh and Jacob lies elsewhere. As members of the L'Arche Community in Iron Mines, Orangedale, and Mabou, Cape Breton, Silas and Jenn have lots of experience working and living with developmentally disabled people. It's what they like doing,...