Bipolarmother, sure you don't mean hypothymic? I looked up hyperthymic because I wasn't sure I knew what it was and found this in wiki -" Individuals with hyperthymic temperament are often seen as strong, energetic, productive, well-respected, and are very often the leaders of the social network; the alpha. By definition, hyperthymic temperament does not have significant elements of dysfunction in mental, interpersonal, business, or social situations, and is in fact, often a benefit."