Psychotherapist Albert Ellis writes that Dyer's book Your Erroneous Zones is probably "the worst example" of plagiarism of Ellis's Rational Emotive Behavioral Therapy (REBT). In a 1985 letter to Dyer, Ellis claims that Dyer had participated in a workshop Ellis gave on REBT before Dyer published his book, in which Dyer appeared to understand REBT very well.
Albert Ellis, a psychotherapist, argues that Dyer's book Your Erroneous Zones is probably the most blatant example of plagiarism of Ellis's Rational Emotive Behavioral Therapy (REBT). In a 1985 letter to Dyer, Ellis notes that Dyer had attended one of his workshops on REBT before publishing his book, where Dyer displayed a clear understanding of the therapy.