Mark Irwin Appelbaum

I knew Mark at the University of Illinois. He was in my class. One of the brightest.. One other class member and I were wondering who else was alive in our class. I was stunned to find Mark in obituaries. He was always so vibrant. If family sees this, I send my deepest belated condolences.

I am deeply saddened by the loss of a such a stellar researcher, as well as an amazing human being who touched the lives of so many people, both professionally and personally. I was honored to have met Mark back in the early 90s when I was working in the Administration for Children and Families, overseeing national Head Start studies. As a nationally recognized early childhood research expert, his stellar technical input and insights helped to inform and improve a number of our major...