Not being able to see through the nonsense being fed to you in the form of ancient fairy tales clearly shows the limited mental abilities of believers. (religion.blogs.cnn.com)
A 1996 European study of 800 students from eight different schools documents a reduction in mental ability caused by poor indoor air quality. (educationworld.com)
His professors and his vocational and mental ability tests indicate he could do either. (religion-online.org)