Interpreting phonological memory performance in bilinguals

The central hypothesis in the Pierce, Genesee, Delcenserie, and Morgan article is that phonological memory is key to explaining the relationship between early language experience (more specifically, less and more optimal ends of the language-experience continuum) and language learning outcomes. One piece of evidence offered is that phonological memory skills are enhanced by bilingualism, with bilingualism representing enriched experience. Here, I propose that data from bilingual children may contradict Pierce et al.'s central hypothesis, rather than support it.