The Guardian temperament is one of four temperaments defined by David Keirsey. Correlating with the SJ (sensing–judging) Myers–Briggs types, the Guardian temperament comprises the following role variants (listed with their corresponding Myers–Briggs types): Inspector (ISTJ), Protector (ISFJ), Provider (ESFJ), and Supervisor (ESTJ).
Guardians are concrete in communicating and cooperative in pursuing their goals. Their greatest strength is logistics. Their most developed intelligence role is either that of the Conservator (Protectors and Providers) or the Administrator (Inspector and Supervisor).
As the security-seeking temperament, Guardians are practical and frugal types. They share certain core values, among them the belief in a strong work ethic, the need for people and institutions to be responsible, the importance of following the rules and of serving one's community. Guardians value experience, and they seek a tangible return on their investments. Believing in common sense, they are not attracted to idle speculation. They are the glue of civilization, maintaining and nurturing institutions that have been established by the dint of hard work. They tend to be conventional and cooperative in their work, wanting to make sure everybody gets what they deserve, no more and no less. They follow the rules and conventions of their cohort or group and expect others to as well.
Interests: In their education and careers, Guardians' primary interest is business and commerce, with an eye toward practical applications in managing material things. They are preoccupied with maintaining the morality of their group.
Orientation: Guardians have a strong sense of duty. They forgo the pleasures of the moment to prepare for unseen eventualities. They regard past events with a sense of resignation. They guard against the corruption of outside influences, and look to past experiences to guide their present choices.
Self-image: The Guardians' self-esteem is based on their dependability; their self-respect on their beneficence; and their self-confidence on their respectability.