Findings reveal that memory retrieval at six months of age is highly specific to the setting in which the memory is acquired. This suggests that infants learn what events are associated with what places before they are able to locomote independently and acquire a spatiotemporal map of the relations between those places. (RH)

Quantitative growth curve models for estimating individual developmental functions from various types of longitudinal data are discussed in the context of investigator assumptions and research design characteristics. Linear and nonlinear models that estimate growth curves are illustrated, and contrasted when they are fit to speech development…