Wait for Me, Roller Skate!11This chapter is a revision of two previous papers which were widely circulated: a colloquium with the same title at the Summer Linguistic Institute of the Linguistic Society of America in August, 1973, and “The comprehension and production of requests by children,” Stanford Papers and Reports on Child Development, April, 1974. It has been prepared with the support of Fellowships from the Guggenheim Foundation and the Center for Advanced Study in the Behavioral Sciences.