is this a defensible statement? I haven't seen any research that would lead me to believe that most engineers are introverts.
I am also a unicorn - but a different kind. I used to always have to defend being a statical outlier so I know where you are coming from.
I'll fall back on my anecdotal evidence of the monthly keg parties that the engineering department threw to counter your example.
Again the statement that most engineers are introverted is in no way defensible and its insulting to try and group us all together like that.
Of course its defensible. From the abstract: "Engineers scored higher on Tough-Mindedness and Intrinsic Motivation; but lower on Assertiveness, Conscientiousness, Customer Service Orientation, Emotional Stability, Extraversion, Image Management, Optimism, Visionary Style, and Work Drive."
https://www.sciencedirect.com/science/article/abs/pii/S09234...
I always went on 2 practice interviews before the real interview and it worked.