Last week on this blog I posted "The "SNIFF" test - criteria for early innovation decision making". This is a simple, but effective five criteria model for evaluating concepts early in the innovation process. Recently I had the pleasure of attending a workshop led by Jay Paap. Dr. Paap is the founder of Paap Associates, Inc (PAI), and has been consulting to major companies in the field of innovation for 40 years. In his work, he has also dealt with the issue of client companies seeking to apply metrics or find some other useful criteria for making early stage decisions in innovation, and has a slightly different, but intriguingly similar model to offer.