>>513999420
Conditional hypotheticals.
Attitude towards pitbulls.
Voice volume control.
Thought abstraction level (empathy to wait staff, for example).
Publicly aggressive body language (ugly, angry stares and prolonged, aggressive eye contact).
Impulsive behavior (cutting in line at a theme park)
Childlike attitudes (demanding free things from customer service)

Most of these things are actually easily and safely observed at a theme park, now that I think about it