Loss of situational awareness is always inadvertent and will therefore not affect judgement.Without a recognition of a need to change the status quo,how can judgement which involves a conscious decision-making process play a part?Rather,it is judgement that affects situational awareness,not vice-versa.Cognitive biases set the trap and pilots are no different to anyone else;they fall right into them.Peer pressure and optimism along with selective perception are probably the big killers.
btw,SA is something you either have or you dont have;there are no degrees of SA.