This study investigates the effects of Age of Onset of Acquisition (AOA) and the quality and quantity of input on the longitudinal development of gender in the acquisition of French by simultaneous (2L1) and successive bilinguals (cL2). Three aspects of French gender are studied: the abstract GENDER feature, gender assignment and gender concord. The findings show that amount and quality of input correlate significantly with the rate of development of gender assignment. Group-level analyses on gender concord show that there is no significant difference between the L1 and the 2L1 groups and that error patterns are different in the 2L1 and cL2 groups. We conclude that while it is clear from the data that the development of gender assignment is primarily dependent on input conditions the question is more open with respect to gender concord. For concord a combination of AOA, the L1 acquisitional timetable, and input are important factors.

This study investigates the acquisition of grammatical gender in French by German L1 children (age of onset of acquisition (AO) 2;8-4,0). The analysis of spontaneous production data of 24 children gathered longitudinally and a gender assignment test administered to 8 of these children at ages 6;7-8;3 and to 9 children (AO 2,11-3;8) at ages 3;2-5;1 revealed that some of them resembled L1 learners whereas others behaved like adult L2 learners. The turning point is at around AO 3;6. AO is thus a crucial factor determining successive language acquisition.