Inventory of Polychronic Values (IPV), developed by Bluedorn et al., which is a 10-item scale designed to assess "the extent to which people in a culture prefer to be engaged in two or more tasks or events simultaneously and believe their preference is the best way to do things."[12] Polychronic Attitude Index (PAI), developed by Kaufman-Scarborough & Lindquist in 1991, which is a 4-item scale measuring individual preference for polychronicity, in the following statements:[13]