Hormonal Mechanisms
Lesson three Neural mechanisms How does the research support the NM theory Crockett et al 2008 carried out a repeated measures experiment on 20 participants In both conditions the participants had fasted and were given a protein drink in the morning before taking part in the study The difference in the drink was the difference in the conditions one drink contained tryptophan which the body needs to make serotonin the other drink did not contain it On both days that the study took place participants played the ultimatum game In this game one player poses a way to split a sum of money with a partner In the condition where the participants had had the drink that did not contain tryptophan so their serotonin levels were low they showed increased aggression toward offers they perceived to be unfair
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