Which characteristic is NOT part of a well-defined performance metric?

A well-defined performance metric should be practical and achievable, which is why the characteristic that is not part of such metrics is ensuring they are unrealistic. Performance metrics are most effective when they are measurable, time-based, and specific, allowing for clear evaluation and assessment of progress.

Measurable metrics provide concrete evidence of performance and enable tracking over time. Time-based attributes ensure that results can be evaluated within a specified timeframe, which helps in assessing improvements or regressions in performance. Specificity allows for clarity in what is being measured, ensuring that all stakeholders understand the goals and the criteria for success.

When a performance metric is unrealistic, it undermines the entire purpose of measurement since it sets a target that cannot be attained, leading to frustration and disengagement. In contrast, a well-constructed metric provides challenges that are feasible, motivating individuals and teams to improve and strive for success.