A hospital has implemented a program aimed at increasing the rate of staff hand washing. The evaluation question is, To what extent has hand washing increased after implementation of the program? The project directors administered a tool at the end of the in-service program to measure knowledge about the importance of hand washing. The selection of a knowledge tool violates which principle of tool/measurement selection? A hospital has implemented a program aimed at increasing the rate of staff hand washing. The evaluation question is, To what extent has hand washing increased after implementation of the program? The project directors administered a tool at the end of the in-service program to measure knowledge about the importance of hand washing. The selection of a knowledge tool violates which principle of tool/measurement selection? Directness--the selected tool does not measure the targeted behavior Non-reactivity--the selected tool is apt to elicit negative emotions Acceptability--the selected tool is not age appropriate Utility--the selected tool is difficult to administer