Send us Fan Mail Temperament—innate, genetically influenced behavioral styles such as reactivity, sociability, and emotionality—serves as the foundation for personality and significantly influences mental health. Specific temperamental traits, such as high harm avoidance (anxiety), high negative emotionality, or unstable affective temperaments (e.g., cyclothymic), are strong predictors for anxiety, depression, and other psychiatric disorders. Affective Temperaments and Disorders: Unstable aff...