TT -- ATTS Temperament Tested
"The ATTS Temperament Test focuses on and measures different aspects of temperament such as stability, shyness, aggressiveness, and friendliness as well as the dog's instinct for protectiveness towards its handler and/or self-preservation in the face of a threat.
The test simulates a casual walk through a park or neighborhood where everyday life situations are encountered. During this walk, the dog experiences visual, auditory and tactile stimuli. Neutral, friendly and threatening situations are encountered, calling into play the dog's ability to distinguish between non-threatening situations and those calling for watchful and protective reactions."