In this article, the authors clarify and provide additional tests of the key elements of their age-period-cohort analysis of non-marital birth rates in this March 2009 issue of "Social Forces." Where Steve Martin, in his commentary, has suggested specific alternative specifications or interpretations of their findings, the authors have…

Makes several methodological points to bear on a previously written article on residential segregation. Notes that although the conclusions given in the original article may be statements of fact, they do not follow as inevitably from the data as the article suggests. (Author/AM)