In 2001, Joshua Rubinstein, Ph.D., Jeffrey Evans, Ph.D., and David Meyer, Ph.D., conducted and published four experiments in which young adults switched between different tasks, such as solving math problems or classifying geometric objects.
ໃນ 2001, Joshua Rubinstein, Ph.D. , Jeffrey Evans, Ph.D. , ແລະ David Meyer, Ph.D. , ໄດ້ນໍາແລະແຈກຢາຍສີ່ການສອບເສັງທີ່ໄວຫນຸ່ມທີ່ມີການປ່ຽນແປງລະຫວ່າງວຽກຕ່າງໆ, ບັນຫາຄະນິດສາດຫຼືການຈັດກຸ່ມບົດເລື່ອງ geometric.