An Investigation of Prospective Memory with Output Monitoring in Preschool Children

The ability to perform an intended behavior in some future circumstance, known as prospective memory (PM), is an important cognitive ability for young children to develop. In this study, we examined PM in preschool children, with the addition of an output monitoring component, which is the ability to remember whether a previously intended action was completed. Participants were engaged in an ongoing task of sorting cards with a variety of images such as animals, tools, and foods by the size of pictures on the card. They were also instructed to sort any cards with animals into cardboard boxes marked as zoos. The first time any given animal was seen, it was to be placed in “Zoo 1,” and if the same animal was noticed again, it was to be placed in “Zoo 2.” Participants completed the task 3 times (each with different targets) on 3 separate days. Participants’ PM accuracy improved with practice. There was a relationship between age and PM performance on the first trial, with older children detecting more PM targets. This relationship was not present on the second and third trials, and a significant relationship between ongoing task errors and PM performance emerged, such that making fewer errors on the sorting task was associated with better PM performance. Regarding output monitoring errors, children most frequently placed both occurrences of the same PM target in the first zoo.