“…Undoubtedly, age differences in children's degree of knowledge concerning category relations exist (e.g., Bjorklund, Thomson, & Omstein, 1983;Posnansky, 1978). Furthermore, studies where children's knowledge of categorical relations was manipulated by norms of category typicality (e.g., Bjorklund, 1988;Frankel & Rollins, 1985;Schneider, 1986) revealed that children's categorical clustering in free recall is a function of the typicality of stimulus items. Bjorklund (1985Bjorklund ( , 1987 concluded that most age differences in recall and clustering can be explained solely in terms of age differences in the strength of relationships between category exemplars and category labels, without having to propose age differences in strategy implementation.…”