To think this is a strange finding:
www.menshealth.com/uk/health/a42175436/short-man-syndrome/
From my experience, this is not true. I have met many aggressive men short, medium height and very tall. I do not understand why men who are short are more likely to be aggressive it seems like quite a generalisation. By that logic, are short women also more aggressive.
I think "short" is also subjective. A 6 foot man can be seen as short for a 5 foot 10/11 women. A man who is 5 foot 6 is not necessarily short for a 5 foot 1 women. It is relative.