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.
Psychotherapist Albert Ellis states that Dyer's book Your Erroneous Zones is likely "the most egregious instance" of plagiarism of Ellis's Rational Emotive Behavioral Therapy (REBT). In a 1985 letter to Dyer, Ellis asserts that Dyer had attended a workshop Ellis gave on REBT before Dyer published his book, during which Dyer demonstrated a clear understanding of REBT.