A new, four-item instrument to measure workplace bullying.

Studies on workplace bullying either in the U.S. or internationally rarely include nurses. We tested the concurrent validity of the Negative Acts Questionnaire-Revised (22 items) with a sample of nurses. Five hundred eleven registered nurses (RNs) responded to a mailed survey. Factor, reliability, and regression analyses tested dimensionality, reliability, and construct and criterion validity. Workplace bullying is best seen as a one-dimensional construct. A subset of four items was found to be both valid and reliable in measuring bullying in this sample. Findings support the use of a one-dimensional, four-item questionnaire to measure perceived bullying in nursing populations. Using a four-item questionnaire decreases participant and researcher burden and makes available an outcome measure for future descriptive and predictive interventional research.