Spatial scaling is an important prerequisite for many spatial tasks and involves an understanding of how distances in different-sized spaces correspond. Previous studies have found evidence for such an understanding in preschoolers; however, the mental processes involved remain unclear. In the present study, we investigated whether children and…

This study investigated the constraints underlying developmental improvements in complex working memory span performance among 120 children of between 6 and 10 years of age. Independent measures of processing efficiency, storage capacity, rehearsal speed, and basic speed of processing were assessed to determine their contribution to age-related…

A longitudinal study examined the role of a mapping system in 2-year olds' learning of color and size words. Results indicated that the children acquired color maps in a characteristic order and showed a different acquisition pattern for size words. Results suggest that learning word associations may promote color-word acquisition; learning color…

Examined factors associated with individual variation in false belief understanding in three- to five-year olds. Found that family size was strongly associated with false belief understanding in children who were less competent linguistically, suggesting that the presence of siblings can compensate for slower language development in developing…

Examined the role of the psychological process of comparison in young children's ability to extend a novel adjective to other objects sharing a salient property whether objects are of the same or different basic-level categories. Found that comparison operates in conjunction with naming to support extension of novel adjectives to properties of…