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Developmental changes in the mental transformation of spatial arrays.
Journal of Experimental Child Psychology 2017 December
An experiment was conducted to investigate the spatial memory and transformation of spatial relations in a sample of 7-, 9-, and 11-year-olds and to compare their performance with that of adults. Four pictures of animals were presented at different locations on the outline of a circle. Participants were instructed to memorize the array of locations and then, in a direct retrieval task, to reconstruct it from memory on a piece of paper that included only the circle outline. Then, in the transformation task, participants were asked to randomly place one of the animals at a new position around the circle and then to place the remaining three animals so that object-to-object locations were preserved. Results from the direct retrieval task showed that 7-year-olds were less accurate than older children and adults, whereas 9- and 11-year-olds showed comparable performance to each other and to adults in reconstructing the array. Results from the transformation task revealed that adults were more accurate than children and that 11-year-olds were more accurate than 7-year-olds. There was no difference between 9- and 11-year-olds. Overall, these findings suggest that the ability to perform spatial transformations (a) develops gradually during childhood and (b) has a steeper developmental slope than the simple retrieval of memorized spatial information.
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