Introspection is a metacognitive ability where a person thinks about their own thoughts, feelings, and emotions. Furthermore introspection includes the ability to discriminate correct decisions from incorrect ones. Fleming, Weil, Nagy, Dolan, and Rees (2010) determined which area of the brain is correlated with introspection. The researchers found that the level of metacognitive ability was correlated with gray matter in the anterior prefrontal cortex (PFC). In this study, 32 participants determined which part of a screen was brighter than the rest of the screen. The participants then rated their level of confidence of their answer. After the experiment, the participants were placed in a MRI scanner. The researchers found that the gray matter
