INFJ is not left-brained or right-brained, as there is no distinction in the usage of any one side of the brain in any personality type, but in terms of the cognition that these people use, they may show differences from other people. For instance, it has been seen that there is 49% of pre-frontal activity on the left side of the INFJ brain, and 51% of their pre-frontal activity on the right side of their brain, which shows that they prefer both sides of the brain depending on what function they are currently using as other personalities do.