In de Chene & Anderson's (1979) article on compensatory lengthening, the authors make two strong claims as to the universal nature of compensatory lengthening. These claims are: (i) that compensatory lengthening occurs in two stages, involving the weakening of a consonant to a glide and the subsequent merger of the resulting diphthong; and (ii) that compensatory lengthening can only occur when there is a pre-existing vowel-length contrast in the language in question.

Both of these claims have received considerable attention in the literature. The first claim has never gained widespread acceptance, and has been challenged in several studies. Challenges have come from, for example, Hock (1986), Poser (1986), Sezer (1986) and more recently Gildea (1995). Each of these scholars provides a strong case against the view that compensatory lengthening is always decomposable into two distinct stages. The ensemble of their arguments renders this claim simply untenable.