Testing susceptibility to peer pressure in an individual mind is very a interesting idea.<p>Unfortunately, we can&#x27;t accurately test it _yet_. A huge amount of data and tests -along with massive improvements in the understanding of the human brain- would be required to make a complete snapshot, without which testing isn&#x27;t possible. We can&#x27;t eve be sure this theoretical test is possible.<p>This alone wouldn&#x27;t prove that their hands are clean, just that they wouldn&#x27;t be as much to blame as someone who didn&#x27;t succumb to social pressures and had more of a choice in the matter.