Participants who pointed at their head answered test questions more accurately, and those who pointed at their heart were more likely to let emotions sway their decisions in a moral dilemma
For the complete article, please click: http://www.scientificamerican.com/artic ... B_20131120
Since taking a test in a cardboard box or confined space adversely affects our ability to think, then it follows that taking tests in cubicles at test centers as is currently done with the GRE and other formal tests could possibly lower the test score further dumbing down the national scores.