Extrapolating, Smoothing and Interpolating Development Factors [Author's Reply]

One of my hopes in writing a paper on development factor analysis was that it would help to stimulate others in their research in this area. The subject is so important that if Charles Darwin were alive today. his contribution to link ratio analysis might be the discovery of the long-awaited missing link. In the absence of a re-vitalized Darwin. we are fortunate to have the review of Stephen P. Lowe and David F. Mohrman and the ideas and models they present.