I’m going to tell you something and you will never be able to not notice this about Carly Fiorina ever again.
She always tilts her head 10% to one side. It’s a gimmick.
Sorry in advance.
Tilting
Tilting the head sideways can be a sign of interest, which may be in what is said or happening. It can also be a flirting signal as it says 'I am interested in you!'
Tilting can similarly indicate curiosity, uncertainty or query, particularly if the head is pushed forward, as if the person was trying to look at the subject in a different way in the hope of seeing something new. The greater the tilt, the greater the uncertainty or the greater the intent to send this signal.
A tilted head pulled back tends to indicate suspicion, as the uncertainty of the tilt is combined with a defensive pulling back.
The tilted head exposes the carotid artery on the side of the neck and may be a sign of submission and feelings of vulnerability.
If the head is propped up by the hand, it may be tiredness or an expectation of continued interest ('This is so interesting!').