The phrase "personality trait" is correct and can be used in written English in any context.
For example, "Intelligence is a personality trait that is valued highly in our society."
Being an "Apple person" or a "Windows person" is a marketing gimmick, not a personality trait.
Tiana's chief personality trait is her industry.
Reagan's optimism wasn't mainly a personality trait.
Luckily, I don't have that personality trait.
Perfectionism has long been considered an important personality trait.
One personality trait most share is being very driven.
He has none of the pressurized anger that was an essential Sinatra personality trait.
Look at the personality trait: even when she was shoplifting, she was shoplifting food.
Risk taking behaviour is therefore just one personality trait of a successful entrepreneur.
And she suggests one other personality trait required of a terrorist: a high tolerance for risk.
Houston, whose most striking personality trait is his dependability, is trying to embolden his team.
