Graphology handwriting analysis has spawned several systems. Integrative graphology focuses on strokes and their relation to personality. Graphoanalysis was the most influential system in the United States, between 1929 and 2000. The Sistema de Xandró is another method of integrative graphology. Holistic graphology is based on form, movement, and use of space. The psychogram is another method which uses specific diagrams to analyze handwriting. The Personal Worth Chart is one such method developed by the Handwriting Consultants of San Diego during the early 1980s. The psychograph is an additional psychogram method. was developed by Leslie King during the 1970s. The Wittlich
Graphology is "useless... absolutely hopeless". The British Psychological Society ranks graphology alongside astrology, giving them both "zero validity". Graphology was also dismissed as a pseudo-science by the skeptic James Randi in 1991. In his May 21, 2013 Skeptoid podcast episode titled "All About Graphology," scientific skeptic author Brian Dunning reports:In his book "The Write Stuff", Barry Beyerstein summarized the work of Geoffrey Dean, who performed probably the most extensive literature survey of graphology ever done. Dean did a meta-analysis on some 200 studies: Dean showed that graphologists have failed unequivocally to demonstrate the validity or reliability of their art for predicting