There is no evidence to support the hypothesis that systematic phonics should precede morphological instruction: Response to Rastle and colleagues

In a series of four articles Rastles and colleagues have argued that early reading instruction should focus on systematic phonics, with morphological instruction only introduced later. We call this the “phonology first” hypothesis. We show that their theoretical motivation for the phonology first hypothesis is flawed, and that their review of the empirical evidence is biased and incomplete. We show that theory and current data lend support to the alternative hypothesis that instruction should target both phonology and morphology from the start.