Testing a Change
Once a change has been developed, it should be further explored and refined by testing. Testing is a way of trying the change on a temporary basis and learning about its potential impact. The idea of testing a change does not seem to come naturally. People tend to want to make a change part of the day-to-day operations immediately. Being successful at making changes requires a very different approach. Tests should be designed so that as little time, money, and risk as possible are invested while at the same time enough is learned to move toward full-scale implementation of the change. The PDSA Cycle, introduced in Chapter One, is a useful framework for planning, carrying out, and learning from a test of change.