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principles that define BLA demonstrated in research (8) (CONCLUSION (not…
principles that define BLA demonstrated in research (8)
INTRODUCTION
1.
Emotions + behaviours are products of the anatomy + physiology of the nervous + endocrine systems
2.
Animal research may inform our understanding of human behaviour
BLA is made up of 3 principles
3.
Patterns of behaviour can be inherited; behaviour is innate because it's genetically based
BLA states that all cognitions, emotions + behaviours have a physiological basis
CONCLUSION
not appropriate to say hormones
cause
a behaviour
instead, hormones
change the probability
of particular behaviour being displayed
hormone behaviour = complex
Thus, hormones influence behaviour
behaviour feeds back to affect hormones
Berthold's study demonstrates the 2nd principle of the BLA
hormones affect behaviour
inferences were made to humans about the effect of testosterone on behaviour
indicates bi-directional relationship exists between hormones + behaviour
also highlights significance of using animals to investigate human behaviour
however, could arguably be a conceptual jump to go from animal studies to humans
BERTHOLD 1849
3 conditions
1.
control group = castrated
Method:
quasi experiment
2.
castrated + own testes reattached
Aim:
test effects of testosterone by castrating roosters
3.
castrated + another's testes reattached
the study practised principle 2; animal research can provide insight into human behaviour
Outcome:
group
1
displayed different behaviour to
2
+
3
1
= less masculine + aggressive
Conclusion:
autopsy revealed nerve connections WEREN'T reestablished in
2
+
3
Berthold concluded the production of biochemicals influenced aggressive + dominant behaviour