Two experiments with 40 children (grades 4 to 8) found the children often used their knowledge of derivational suffixes in defining low-frequency derivatives, and knowledge of suffixes was significantly correlated with suffix production in a nonsense task. The children's morphological awareness of derivational suffixes included semantic…

Very long-term memory for abstract materials was examined for subjects who had served in a synthetic grammar learning experiment two years earlier. Knowledge of these grammars was retained. The form and structure of knowledge and the manner in which it is put to use remained similar to the original. (Author/RD)