I'll be giving an update on the acquisition study, PaQua, which is nearly done with data collection.

The literature on the acquisition of the passive has generally found that (i) kids fail to comprehend all passive sentences until as late as 6 years old; and (ii) children can comprehend passives of actional verbs at an earlier age than passives of non-actional verbs, perhaps between 4 and 5 years old.

Both these observations have led to a variety of claims about children's grammatical knowledge (or lack thereof) of the passive. This study investigates the possibility that children's failure to comprehend passives of non-actional verbs in previous studies is a result of discourse infelicitous use of the passive.