Children begin to learn abstract rules at an early age, in an implicit way, without access to rule descriptions. They rely on specific rule instances that they encounter. However, rule instances often co-occur with rule-inconsistent instances. One kind of inconsistent input, non-application instances, constitutes a learnability problem. For…

It is a common finding across languages that young children have problems in understanding patient-initial sentences. We used Tagalog, a verb-initial language with a reliable voice-marking system and highly frequent patient voice constructions, to test the predictions of several accounts that have been proposed to explain this difficulty: the…