Hybrids’ Tempermental Instability

In full agreement with this suggestion of glandular disturbance is the general opinion of biologists that the human hybrid shows a typical instability in mental and moral respects—a want of balance.  His motives and actions are incalculable, his impulses stronger that his self-control. I feel more and more convinced that the inmates of our prisons and asylums are to a large extent recruited from these types of mixed race, who numbers are constantly rising on account of increasing intercourse between populations from all parts of the world.

Jon Alfred Mjöen, “Race-crossing and glands: Some human hybrids and their parent stocks,” The Eugenics Review, Volume 23, Number 1, (April 1931) 31-40.