... " Among the topics not (adequately) covered by the original paper which we develop here are the following: dividend policy irrelevancy (DPI) and its central role in the model; properties of the primitive variable " x t " and reasons why it makes sense to label it earnings; how one extends the model to incorporate an underlying information dynamic in the spirit of Ohlson (1995); accounting rules and their influence on the model; the ways in which the model can be extended to reflect operating vs. financial activities much like Feltham and Ohlson (1995). Aside from the original OJ paper, and its companion Ohlson (2005), the analysis draws on Christensen and Feltham (2003), Fairfield (1994), Feltham and Ohlson (1995), Ohlson (1995, 1999a, 1999b), Ohlson et al. (2006), Ohlson and Zhang (1999), Olsson (2005), Ozair (2003), Penman (2005 Penman ( , 2006), Ryan (1986), Sougiannis and Yaekura (2001), and Yee (2005, 2006). Finally, we should note here that this paper will not discuss many empirical papers that have looked at, or used, the OJ model and similar valuation formulas (e.g., Botosan and Plumlee, 2005, Begley and Feltham, 2002, Cheng, 2005, Cheng et al., 2006, Daske, 2006, Easton, 2004, Easton, 2006, Easton and Monahan, 2005, Easton et al., 2002, Francis et al., 2004, Gebhardt et al., 2001, Gode and Mohanram, 2003, Hutton, 2000, Ohlson, 2001, Thomas and Zhang, 2006). ...