But he does show well-established traits of a personality disorder characterised by a lack of empathy towards other humans.

One of the best predictors of authoritarian political beliefs — and likely Trumpov support — is how a person answers questions about the most desirable traits in children:

A separate DNA study, published in the journal Science, shows that modern humans held on to some key genetic traits from Neanderthals that may have given them an evolutionary advantage.

A team of interdisciplinary scientists from the Hakai Institute worked closely with Armstrong to analyze the DNA of these specimens and mapped out the geographic distribution of plants sharing these genetic traits.

These findings provided a unique resource for identifying genetic variants and molecular mechanisms underlying complex traits and diseases.