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16 Feb 2011
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Psychology II Lecture 16
Are animals more aggressive than humans?
-animal in the same species usually do not kill each other
-human is a unique species that they kill each other
Lorenz
-animals that are naturally equipped with method of quick killing in another member of species
do not kill members of the same species
-evolution is adaptive and inhibits killing of members in the species
-possible reason is to maintain the survival rate in the species
-animals, like wolf and lion appear to be engaged in furious fight, but they do not actually kill
each other
1) Virtualization of aggression
-aggression takes place but is controlled well
-quarrel serves as an outlet of aggression
-animals seem aggressive, but maintain in control
2) Pleasant Gesture
-submission
-wolf exposes vulnerable body spot in a fight to show sign of giving up
-winning wolf will stop aggression and leave the wolf alone
-bird cannot control aggression
-peck each other, no inhibition of aggression because their aggressive behaviour cannot kill each
other, like the ones in wolf
-humans aggression is not inhibited
-too clever for our own good
-become sophisticated and invent gunpowder
-method to kill each other with technology
-technology came to us faster than the point evolution can take place
-engage in uncontrollable aggression
Brain and aggression
-implant electrode in area, like thalamus and medulla to get animal to be aggressive
-large tumour that exerts pressure on hypothalamus and medulla causes aggression
-Spanish scientist, name De Gada studied aggression in bull
-implant electrode in brain that can control aggression using remote control
-same test is performed on cat
-when the electric stimulation is on, animal show attacking behaviour
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Document Summary

Animal in the same species usually do not kill each other. Human is a unique species that they kill each other. Animals that are naturally equipped with method of quick killing in another member of species do not kill members of the same species. Evolution is adaptive and inhibits killing of members in the species. Possible reason is to maintain the survival rate in the species. Animals, like wolf and lion appear to be engaged in furious fight, but they do not actually kill each other: virtualization of aggression. Animals seem aggressive, but maintain in control: pleasant gesture. Wolf exposes vulnerable body spot in a fight to show sign of giving up. Winning wolf will stop aggression and leave the wolf alone. Peck each other, no inhibition of aggression because their aggressive behaviour cannot kill each other, like the ones in wolf. Technology came to us faster than the point evolution can take place.

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