Gender Agreement and Assignment in Spanish Heritage Speakers: Does Frequency Matter?

Gender has been extensively studied in Spanish heritage speakers. However, lexical frequency effects have yet to be explored in depth. This study aimed to uncover the extent to which lexical frequency affects the acquisition of gender assignment and gender agreement and to account for possible factors behind heritage language variability. Thirty-nine English-dominant heritage speakers of Spanish completed a lexical knowledge screening task (Multilingual Naming Test (MiNT)) along with an elicited production task (EPT), a forced choice task (FCT), and a self-rating lexical frequency task (SRLFT). Heritage speakers performed more successfully with high-frequency lexical items in both the EPT and the FCT, which examined their acquisition of gender assignment and gender agreement, respectively. Noun canonicity also affected their performance in both tasks. However, heritage speakers presented differences between tasks—we found an overextension of the masculine as well as productive vocabulary knowledge effects in the EPT, whereas the FCT showed an overextension of the feminine and no productive vocabulary knowledge effects. We suggest that lexical frequency, determined by the SRLFT, and productive vocabulary knowledge, as measured by the MiNT, account for the variability in the acquisition of gender assignment but not on gender agreement, supporting previous claims that production is more challenging than comprehension for bilinguals.