Transitive Reasoning and Developmental Changes in Parietal Cortex
نویسندگان
چکیده
This study utilizes voxel-based morphometry to examine the neural basis of developmental changes in transitive reasoning in parietal regions. Two groups of participants (young adolescents and adults) performed a transitive reasoning task, subsequent to undergoing anatomical MRI brain scans. Behaviorally, adults performed better on the transitive reasoning task than the young adolescents. Grey matter analysis of their brains showed the expected thinning/pruning of grey matter in BA 7 and a significantly greater correlation between the performance of the adults and grey matter density than the performance of adolescents and grey matter density in this area. These results support the idea that developmental anatomical changes in parietal cortex facilitate developmental changes in transitive reasoning.
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Transitive inference reasoning involves the examination and comparison of a given number of relational pairs in order to understand overall group hierarchy (e.g., A>B, B>C, C>D; therefore is A>D?). A number of imaging studies have demonstrated the role of the parietal cortex for resolving transitive inferences. Some studies also identify the rostrolateral prefrontal cortex as being critical for...
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