As described Molly Crockett, a psychologist at the University of Cambridge in the journal Science, also known as serotonin neurotransmitters (nerve signal Conductor) and became the target antidepressant drugs, believed to make the response a person becomes aggressive when levels in the brain is limited or reduced. An important role of serotonin in impulse control has been controversial, but Crockett and his team claim their research is the first to prove the existence of an actual causal ties. "That is why we can directly manipulate the levels of serotonin and observe impact on behavior, we can conclude a causal relationship between serotonin and aggressive responses," Crockett said. During the research, Crockett and his team use their knowledge to manipulate serotonin levels in 20 healthy people who become the object of research. Participants were asked to make a game situation to test their responses to fair or not in the money supply. From observation showed that participants who have low serotonin levels tend to want to set aside or beat the others, even when cornered though. This is shown as a way to punish someone who makes an offer. "It is an anger-driven response," Crockett said.

Serotonin levels have that effect, because the chemical is involved in the activity of the prefrontal region of the brain, explained study author Molly J. Crockett, a doctoral student at the University of Cambridge in England."One recent study on the Ultimate Game showed that when an unfair offer is accepted, you see activity in the prefrontal cortex," Crockett said."Down-rating the emotional response makes it more unlikely that an unfair offer will be accepted."In other words, lower serotonin levels also meant a higher level of resentment, so that an offer that wasn't as good as it might be would be turned down.Conversely, higher serotonin levels would make it easier to live in an imperfect world.It's hard to apply that knowledge directly, Crockett said."What we did was have people fast overnight," she said.

Molly Crockett | Molly J. Crockett Molly Crockett | Molly J. Crockett Molly J. Crockett Molly J. Crockett A team headed by neuroscience Ph.D. student Molly Crockett of the University of Cambridge in the U.K. wondered whether the neurotransmitter would affect how people play the ultimatum game, an experiment used by economists that shows how people's economic decisions are sometimes irrational. In the game, a "proposer" is given a sum of money, part of which he or she offers to share with a "responder". If a responder turns down the offer as too low, then neither player gets any money. What the ultimatum game reveals is that even though a responder would always gain by accepting the offered share, he will sometimes cut off his own nose to spite his face, as it were, punishing a proposer by rejecting an unfair offer. Molly J. Crockett is a PhD student in the Department of Experimental Psychology, Behavioral and Clinical Neuroscience Institute, University of Cambridge. Her research focuses on the neural basis of self-regulation and impulsivity — what brain mechanisms allow us to control our thoughts, feelings, and actions? She's investigating self-control from the perspectives of both associative learning theory and neuroeconomics. To explore these questions, she is using pharmacological manipulations, fMRI and genetic analyses. Dysfunctions in these neural systems contribute to a wide range of psychopathology, including OCD, ADHD, depression, anxiety, and substance abuse. Her research aims to enhance our understanding of self-control in the healthy brain in order to inform the development of better treatments for psychopathology. Molly coauthored Putting Feelings Into Words: Affect Labeling Disrupts Amygdala Activity in Response to Affective Stimuli : Putting feelings into words (affect labeling) has long been thought to help manage negative emotional experiences; however, the mechanisms by which affect labeling produces this benefit remain largely unknown. Molly also coauthored Serotonin Modulates Behavioral Reactions to Unfairness: Serotonin (5-HT) has long been implicated in social behavior and impulsivity, but the mechanisms through which it modulates self-control remain unclear. She observed the effects of manipulating 5-HT function on behavior in the Ultimatum Game, where players must decide whether to accept or reject fair or unfair monetary offers from another player. Participants with depleted 5-HT levels rejected a greater proportion of unfair, but not fair offers, without showing changes in mood, fairness judgments, basic reward processing, or response inhibition. Her results suggest that 5-HT plays a critical role in regulating emotion during social decision-making. Originally from Irvine, California, Molly earned her B.A. in Psychobiology at UCLA (University of California, Los Angeles). She loves to travel and she hopes to explore many new parts of the world over the next few years. Music is one of her greatest passions, she is a member of King's Voices, the mixed-voice choir of King's College in Cambridge. Learn about the books that have influenced her.

Dr Molly Crockett (University of Zurich) - Neural bases of social and economic behaviour

Molly Crockett, Sir Henry Wellcome Postdoctoral Fellow, Laboratory of Social & Nueral Systems Research, Department of Economics, University of Zurich Molly Crockett Molly Crockett -- Moral enhancement? Evidence and challenges Molly Crockett, Sir Henry Wellcome Postdoctoral Fellow, Laboratory of Social & Nueral Systems Research, Department of Economics, University of Zurich