Ethological Explanation of Aggression
- Created by: rosannaaa
- Created on: 08-04-18 12:44
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- ETHOLOGICAL EXP OF AGG
- Ethology = study of animal behaviour in natural settings
- Lorenz = agg is an innate tendency triggered by environmental stimuli
- Innate Releasing Mech, Fixed Action Pattern
- Dominance gives them special status, happens in humans too.
- Agg is an adaptive response, an individual will be more likely to pass on their genes if they're able to gain upper hand in competition for food, mates territory.
- Adaptive Functions of agg - eth exp suggest main function of agg is adaptive.
- Agg is beneficial to survive because a deflated animal is rarely killed but rather is forced to establish territory elsewhere.
- This means members of a species spread out over a wider area and have to discover resources in different place, reducing competition pressure and possibility of starvation.
- Agg is beneficial to survive because a deflated animal is rarely killed but rather is forced to establish territory elsewhere.
- Other adaptive function is to establish dominance hierarchies. Male chimpanzees use agg to climb troops social hierarchy.
- Ritualisitic agg = series of behaviours carried out in a set order.
- One of Lorenz' early observations of fights between animals of same species was how little actual physical damage was done.
- Most agg encounters consisted mainly of a period ritualistic signalling.
- One of Lorenz' early observations of fights between animals of same species was how little actual physical damage was done.
- IRM, FAP = IRM is a built in physiological process or structure, network of neurons in the brain.
- Environmental stimulus triggers IRM which then releases specific sequence of behaviours.
- This sequence is called FAP - 6 features.
- ETHOLOGICAL EXP OF AGG
- Ethology = study of animal behaviour in natural settings
- Lorenz = agg is an innate tendency triggered by environmental stimuli
- Innate Releasing Mech, Fixed Action Pattern
- Dominance gives them special status, happens in humans too.
- Environmental stimulus triggers IRM which then releases specific sequence of behaviours.
- 1)stereotyped or unchanging sequences of behaviours.
- 2)universal, same behaviour found in every individual of species
- 3)unaffected by learning
- 4)ballistic - once triggered, it follows course and cannot be altered until completion.
- 5)single purpose
- 6)Response to identifiable specific sign stimulus.
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