The purpose of this study was to investigate the relationships between sensorimotor intelligence and conceptual intelligence in early childhood. Children from 2 years 6 months to 4 years 7 months were tested for the relocating ability in two tasks. In both tasks, children saw an object on a table and the object was concealed by a cover. Then children were asked to point to the object's location before and after the table was rotated. In the Full rotation task, the table was rotated 180° at a time. In the Step rotation task, the table was rotated 180° by 45° step. The hiding location of the object was the center of left or right side of the table and the direction of rotation was clockwise or counter-clockwise. Thus children had 4 trials in each task. The relationships between the performances in the Full and the Step tasks indicated that children in the transitional period from egocentric to allocentric responses in the Full task showed lower performances in the Step task than the other children. The findings suggest underdeveloped conceptual intelligence inhibit sensorimotor intelligence.
