One also wonders if he has grappled with the deepest meaning of human aggression toward children.

It is a moral conflict of how to deal with human aggression and evil.

Gender is a factor that plays a role in both human and animal aggression.

Does this variability mean, as some have argued, that animal studies cannot possibly shed light on human aggression?

"But this castle seems more suited to defense against human aggression."

He has published extensively on the causes and consequences of human aggression.

The act of kicking in general is a universal form of human aggression.

His research on human aggression has been published in various journals.

The recent work adds a new twist to older theories about the roots of human aggression.

We cannot expect to wipe out 100,000 years of human aggression in a few decades, or even a century.