| Abstract: | "A review of the literature relating glutamic acid medication to the intellectual functioning of mental defectives indicates that positive effects tend to be reported in studies not employing a control group. The few positive studies employing controls contain methodological flaws, rendering their conclusions difficult to accept. The tendency for negative findings to occur in the more adequately designed experiments sheds doubt on the hypothesis that glutamic acid medication has a specifically beneficial effect on intellectual functioning." (PsycINFO Database Record (c) 2010 APA, all rights reserved) |
