Editing On Aggression (section)

===Hydraulic model===
[[File:Lorenz_hydraulic_model.svg|thumb|The psycho-hydraulic model of Lorenz]]
Additionally, Lorenz addresses behavior in humans, including discussion of a "[[hydraulic]]" model of emotional or instinctive pressures and their release, shared by [[Sigmund Freud|Freud]]'s [[psychoanalytic theory]], and the abnormality of intraspecies violence and killing. Lorenz claimed that ''"present-day civilized man suffers from insufficient discharge of his aggressive drive"'' and suggested that low levels of aggressive behaviour prevented higher level responses resulting from "damming" them.<ref>{{Cite journal|last=Kim|first=Samuel S.|date=1976|title=The Lorenzian Theory of Aggression and Peace Research: A Critique|url=http://journals.sagepub.com/doi/10.1177/002234337601300401|journal=Journal of Peace Research|language=en|volume=13|issue=4|pages=253–276|doi=10.1177/002234337601300401|s2cid=109972910 |issn=0022-3433|url-access=subscription}}</ref> His 'hydraulic' model, of aggression as a force that builds relentlessly without cause unless released, remains less popular than a model in which aggression is a response to frustrated desires and aims.