Excerpts from “How Graphology Fools People” by Barry L. Beyerstein, Ph.D.
“My task in summarizing the extensive scientific research on graphology has been made quite easy by the superb efforts of Geoffrey Dean [8] [8].”
“Dean [8] unearthed more than 200 studies that had unambiguous criteria of this sort and were acceptable with respect to sample sizes, experimental controls, statistical analyses, etc. After subjecting these studies to a meta-analysis, Dean showed that graphologists have failed unequivocally to demonstrate the validity or reliability of their art for predicting work performance, aptitudes, or personality. Graphology thus fails according to the standards a genuine psychological test must pass before it can ethically be released for use on an unsuspecting public.”