Writing development in Spanish as a second and heritage language: a corpus study on complexity

Few studies have analyzed the writing features of second language (L2) alongside heritage language (HL) learners of Spanish. Focusing on the development of writing complexity, we collected data from students at the beginning and at the end of a composition sequence. Comparing the groups at the outset revealed HL students’ greater mood complexity. After 14 weeks, both groups improved in tense complexity, mean essay length, and lexical sophistication. Our findings suggest that, given sufficient time, both HL and L2 students can progress in similar ways in at least some measures of linguistic complexity. Nevertheless, they might gain from instruction that facilitates new and diverse vocabulary, and the construction of longer sentences. L2 students specifically would benefit from greater emphasis on the subjunctive. Our study supports the claim that achieving writing complexity takes time and comes in stages, contributing to a more nuanced understanding of L2 and HL writing development.