[Potironette]

A for Assertive and T for Turbulent.

According to the site...

"Assertive (-A) individuals are self-assured, even-tempered and resistant to stress. They refuse to worry too much and do not push themselves too hard when it comes to achieving goals."

"Turbulent (-T) individuals are self-conscious and sensitive to stress. They are likely to experience a wide range of emotions and to be success-driven, perfectionistic and eager to improve."