The ability to rotate visual mental images is a complex cognitive skill. It requires the building of graphical libraries of information through short or long term memory systems and the subsequent retrieval and manipulation of these towards a specified goal. The development of mental rotation skill is of critical importance within engineering…

Previous literature on children's visual pattern perception has suggested that preschool children may process hierarchical forms in a manner different from that of older children and adults. Data from some studies suggested that children are holistic processors of pattern information, while other studies characterized children as piecemeal…