Within the theoretical framework of evolving networks, lexical learning is seen as a process of network growth. The lexicon is modeled as a growing phonological network that increases in size as language users advance through second language proficiency stages. This allows the analysis of specific growth algorithms (such as preferential attachment) that can account for observed mechanisms of lexical acquisition. Empirical models of evolving lexical networks can help elucidate the structural changes occurring as the second language lexicon expands.
