A Kessler Foundation study revealed that researchers discard data from poor quality MRIs as random errors when in reality there is a link between severe head movement during an MRI and lower cognitive ability in MS patients. This potential bias can skew the final results of the study leaving out data on people with lower cognitive ability. MRI technology is improving in the ability to correct for such head movement which means results from studies on MS patients will become more accurate and insightful especially for those of lower cognitive ability. For best MRI results patients must stay as still as possible. Read more about this on Science Daily at: http://www.sciencedaily.com/releases/2014/02/140219124738.htm.