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decision-making. But when they went

along with their group’s wrong answer,

their brain activity revealed something

very different.

Remember, what Asch wanted to

know was whether people conformed

despite knowing that the group was

wrong, or whether their perceptions

had been altered by the group. If the

former was true, Berns and his team

reasoned, then they should see more

brain activity in the decision-making

prefrontal cortex. That is, the brain

scans would pick up the volunteers deciding

consciously to abandon their

own beliefs to fit in with the group. But

if the brain scans showed heightened

activity in regions associated with visual

and spatial perception, this would

suggest that the group had somehow

managed to change the individual’s

perceptions.

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