In response to questions in which a "wh"-term interacts with a universal quantifier in object position, such as "Who picked every toy?," children as old as 5 years of age often provide a list, pairing toys with the people who picked each of them. This response pattern is unexpected, it has been claimed, because children appear…

An analysis of part-of-speech membership was made utilizing certain mechanisms that have been proposed to explain the nature of word classes. It was proposed that words of the same form class constitute "verbal habit families" on the basis of either a common grammatical meaning response, a common affix, or a common label (e.g., "verb"). One…