In this chapter, I have described a few models that represent alternatives to Brownian motion, which is still the dominant model of trait evolution used in the literature. These examples really represent the beginnings of a whole set of models that one might fit to biological data. The best applications of this type of approach, I think, are in testing particular biologically motivated hypotheses using comparative data.
Section 6.9: Footnotes
1: Pagel's original models were initially focused on discrete characters, but - as he later pointed out - apply equally well to continuous characters.
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