The fourth edition (published in 2016) also contains about 80 pages dedicated to answering numerous questions about how to practice the program. Influence, research, use Workers in professional fields, as well as writers of popular books, have cited or been influenced by the passage meditation program. Sometimes, the passage meditation program has been included among resources for complementary and alternative medicine. Several empirical research studies have examined the effects on health professionals and college undergraduates from receiving training in the Passage Meditation (PM) program. Peer-reviewed research, published in professional psychology and health journals, has shown that following the passage meditation program reduces stress and increases confidence in tasks such as caregiving These studies mostly used randomized methods. Like much recent research on meditation (e.g., on mindfulness meditation), research studies on Passage Meditation have neither postulated nor claimed to infer the operation of supernatural or other non-natural, non-psychological processes. Research on Passage Meditation through early 2007 was reviewed in chapter 6 of Spirit, science and health: How the spiritual mind fuels physical wellness. In Neurology Now, published by the American Academy of Neurology, the article "Meditation as Medicine" states that various well-designed studies show that meditation can increase attention span, sharpen focus, improve memory, and dull the perception of pain, and lists Passage Meditation as a common meditation method. Passage Meditation has sometimes been integrated into college curricula. Editions In 2001, Publishers Weekly reported that the book Meditation (later republished in as Passage Meditation) had "sold more than 200,000 copies since its 1978 debut." English editions have been published in the US, the UK, and India. Non-English translations of the book have been published in Bulgarian, Chinese, Czech, Dutch, French, German, Hungarian, Korean,<ref name=korean03>Eknath Easwaran (2003). 명상 의 기술 (Meditation) (Kim Sŏng-gyun, trans.). 강, Sŏul-si, Korea: Kang, 2003. , (270 pages)</ref> Lithuanian,<ref name=lithuanian99>Eknath Easwaran (1999). Meditacija (Meditation) (Arvydas Pliučas, trans.). Vilnius, Lithuania: Alma littera. (236 pages)</ref> Portuguese,<ref name=portuguese19>Eknath Easwaran (2019). Meditação – Um programa de oito pontos para transformar a vida (Meditation - An eight-point life-changing program) (Isabel Haber, trans.). Lisboa, Portugal: Centro Lusitano de Unificação Cultural. (310 pages)</ref> Romanian,<ref name=romanian08>Eknath Easwaran (2008). Opt paşi spre infinit (Eight Steps to Infinity)(Antoaneta Goţea, trans.). Braşov, Romania: Editura Kamala. (185 pages)</ref> Russian,<ref name=russian91>Eknath Easwaran (1991). [медитация (Meditation)]. Moskva [Moscow], Russia: ZAO Skorpion.</ref> Slovenian, Spanish,<ref name=spanish95>Eknath Easwaran (1995). Meditación: ocho puntos para transformar la vida (Meditation: eight points for transforming life) (Juan Andrés Iglesias,