Temperament is an animal's behavioral response to handling by humans, or to any potentially fearful situation. Since these reactions are often linked with stress, they have negative effects on production and profitability. Because of its impact on pregnancy rates, growth, meat quality, and safety, producers have been selecting for temperament for years, whether by design or inadvertently. However, to make noticeable improvements in the overall behavior of a herd, a clear and consistent method for evaluating temperament is needed.