The present study assessed the effects that the density of an array has on two aspects of memory: the ability to recall a group of items and the ability to place these items in their original locations. First-graders, fourth-graders, and college students were asked to memorize 16 common objects presented in either a dense array or a spaced array. After performing a filler task, subjects were asked to recall the objects and then were given the objects to replace in their original locations. Recall scores were higher than replacement scores at all ages and for both dense and spaced conditions. No differences were found between genders. An interaction was found between recall score and density of presentation. First- and fourth-graders recalled the dense array better than the spaced, but college students recalled the spaced array better. The younger children's better performance on the recall of dense arrays was discussed in relation to their visual search strategies during the memorization period. (Author/RH)