The Cognitive Maturity Scale assesses cognitive developmental level. High scores identify the individual who has an appreciation of the existence of multiple potential perspectives on best knowledge and wisdom when making judgments. This person will likely reconsider judgments in the face of new evidence and reserve judgment as appropriate in critical situations. A person at a high level of cognitive development and maturity understands that reasonable people can disagree, but, not being a relativist, the person also understands that some reasons and arguments are better than others. Low scores are of concern in that they are indicative of perspectives about knowledge and truth that too often abdicate the power of judgment when uncertainty is high and a nuanced perspective would be both more helpful for ascertaining appropriate action and expected of professionals in responsible leadership positions. A person with a low score on this scale might be described as cognitively immature.