A person who kills another to steal their money is deemed more "blameworthy" than someone who kills another while sleepwalking. The American criminal justice system uses motivation as part of its criteria for punishment, Eagleman explains. There is evidence that we do not always understand our own motivations, and that we are not capable of consciously knowing where they come from even though we think we may. Our senses can be affected in many ways, altering our perception of reality.
The conscious mind can be affected by many factors, however, Eagleman explains, and he provides several examples to support this. These competing impulses come from the unconscious mind, he argues, and our conscious mind acts as a kind of chief executive that makes the ultimate decision on whether to eat the dessert or not. The person may have conflicting impulses to eat the dessert and to avoid eating the dessert because of health concerns.
Eagleman gives as an example a person's possible reaction when offered a sweet dessert. These changes in the brain sometimes result in a person acting contrary to their previous personality, revealing, Eagleman claims, that who we "are" is largely a function of unconscious processes of our minds.Įagleman proposes a model of the brain he calls a "team of rivals." In this model, the brain is really several separate functions that sometimes incline toward opposing behaviors. Many of these experiments illustrate what happens to a person's perception or behavior when the brain is altered, either by damage or drugs. The conscious mind represents only a small part of our brain activity and function, Eagleman argues, and he presents the results of a large number of experiments and studies that support his assertion. He proposes that rather than sentencing criminals based on how culpable they appear to a judge or jury, sentencing should be based on a person's potential for reforming their behavior based on neurological factors. Assigning blame for criminal acts is complicated by the fact that our actions are dictated to a great extent by our unconscious minds, Eagleman claims. In Incognito, David Eagleman, a neuroscientist, presents his argument that the American criminal justice system should integrate current research in brain science into sentencing guidelines.
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