Posture; mentality (8)
I believe the answer is:
attitude
This clue is a double definition.
'posture' is the first definition.
(I know that posture can be written as attitude)
'mentality' is the second definition.
(I've seen this before)
(Other definitions for attitude that I've seen before include "Position or mental approach" , "Mental orientation or position" , "Way of thinking or position of body" , "Frame of mind" , "Position, stance on matter" .)