The creative oral language elicited from 45 preoperational and 40 concrete operational first grade students was analyzed to study the relationship between cognitive development and the types of case relationships produced. Each child's language was analyzed for eight noun/verb relationships, including state, process, action, experience, location, direction, duration, and instrumentals. The findings indicated that the type of language a child produces is limited by the child's cognitive capacity. The preoperational youngsters produced more static language because they were functioning with static and immobile thought. The concrete operational subjects, on the other hand, were more used to operating with dynamic thought processes, so their language reflected a more dynamic nature, such as the increased production of extranuclear sentence elements like locatives, ablatives, durations, and instrumentals. (RL)