Suggestopedia (US English) or Suggestopædia (UK English) is a teaching method developed by the Bulgarian psychotherapist Georgi Lozanov. It is used in different fields, but mostly in the field of foreign language learning. Lozanov has claimed that by using this method a teacher's students can learn a language approximately three to five times as quickly as through conventional teaching methods.
The theory applied positive suggestion in teaching when it was developed in the 1970s. However, as the method improved, it has focused more on “desuggestive learning” and now is often called “desuggestopedia.”  Suggestopedia is a portmanteau of the words “suggestion” and “pedagogy". A common misconception is to link "suggestion" to "hypnosis". However, Lozanov intended it in the sense of offering or proposing, emphasising student choice.
Purpose and theory
The intended purpose of Suggestopedia was to enhance learning by tapping into the power of suggestion. Lozanov claims in his website, Suggestology and Suggestopedy, that “suggestopedia is a system for liberation”; liberation from the “preliminary negative concept regarding the difficulties in the process of learning” that is established throughout their life in the society. Desuggestopedia focuses more on liberation as Lozanov describes “desuggestive learning” as “free, without a mildest pressure, liberation of previously suggested programs to restrict intelligence and spontaneous acquisition of knowledge, skills and habits.” The method implements this by working not only on the conscious level of human mind but also on the subconscious level, the mind’s reserves.
Physical surroundings and atmosphere in classroom are the vital factors to make sure that "the students feel comfortable and confident", and various techniques, including art and music, are used by the trained teachers. The lesson of Suggestopedia consisted of three phases at first: deciphering, concert session (memorization séance), and elaboration.
Deciphering: The teacher introduces the grammar and lexis of the content.
Concert session (active and passive): In the active session, the teacher reads the text at a normal speed, sometimes intoning some words, and the students follow. In the passive session, the students relax and listen to the teacher reading the text calmly. Music (“Pre-Classical”) is played in the background.
Elaboration: The students finish off what they have learned with dramas, songs, and games.
Introduction: The teacher teaches the material in “a playful manner” instead of analyzing lexis and grammar of the text in a directive manner.
Concert session (active and passive): In the active session, the teacher reads with intoning as selected music is played. Occasionally, the students read the text together with the teacher, and listen only to the music as the teacher pauses in particular moments. The passive session is done more calmly.
Elaboration: The students sing classical songs and play games while “the teacher acts more like a consultant”.
Production: The students spontaneously speak and interact in the target language without interruption or correction.
Teachers should not act in a directive way, although this method is teacher-controlled and not student-controlled. For example, they should act as a real partner to the students, participating in the activities such as games and songs “naturally” and “genuinely.”  In the concert session, they should fully include classical art in their behaviors. Although there are many techniques that the teachers use, factors such as “communication in the spirit of love, respect for man as a human being, the specific humanitarian way of applying their ‘techniques’” etc. are crucial. The teachers not only need to know the techniques and to acquire the practical methodology completely, but also to fully understand the theory, because, if they implement those techniques without complete understanding, they will not be able lead their learners to successful results, or they could even cause a negative impact on their learning. Therefore, the teacher has to be trained in a course taught by certified trainers.
Here are the most important factors for teachers to acquire, described by Lozanov.
- Covering a huge bulk of learning material.
- Structuring the material in the suggestopaedic way: global-partial – partial-global, and global in the part – part in the global, related to the golden proportion.
- As a professional, on one hand, and a personality, on the other hand, the teacher should be a highly-regarded professional, reliable and credible.
- The teacher should have, not play, a hundred percent expectation of positive results (because the teacher is already experienced even from the time of the teacher training course).
- The teacher should love his/her students (of course, not sentimentally but as human beings) and teach them with personal participation through games, songs, classical arts, and pleasure.
Method for children (preventive Suggestopedia)
The method for Adults includes long sessions without movement, and materials that are appropriate for adults. Children, however, get impacts from “the social suggestive norms” differently and their brains are more delicate than those of adults. Therefore, another method with different materials should be applied to children, which better matches their characteristics. Lessons for children are more incidental and short, preventing the children from the negative pedagogical suggestions of Society. It is important to tell the parents about the method and their roles because they could influence children both negatively and positively, depending on how they support the kids.
Lozanov claims that the effect of the method is not only in language learning, but also in producing favorable side effects on health, the social and psychological relations, and the subsequent success in other subjects.
Unesco's final report on Suggestopedia
Recommendations (Extraction) 
Made by the Experts from the Working Group on Suggestology as a Learning Methodology Meeting in Sofia, December 11–17, 1978
...1. There is consensus that Suggestopedia is a generally superior teaching method for many subjects and for many types of students, compared with traditional methods. We have arrived at this consensus following a study of the research literature, listening to the testimony of international experts, observing films portraying Suggestopedia instruction and visiting classes in which Suggestopedia is practiced. The films were prepared and the classroom visitations were impressive.
...2. Standards should be set up for the training, certification and maintaining of standards of suggestopedic training.
...3. Different categories of competency of teachers should be used to reflect increasing levels of teaching performance in certification.
...4. Suggestopedic teacher training should be started as soon as possible.
...5. An International Association for Suggestology and Suggestopedia should be set up that is affiliated with UNESCO and should have the assistance and guidance of Dr. Lozanov for training, research, coordination and publication of results.
...6. UNESCO is requested to give its support to all these proposed activities by all possible means and under the existing international regulations.”
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Suggestopedia produced four main offshoots. The first was still called Suggestopedia but was developed in eastern Europe and used different techniques from Lozanov's original version. The other three are named Superlearning, Suggestive Accelerated Learning and Teaching (SALT), and Psychopädie. Superlearning and SALT originated in North America, while Psychopädie was developed in West Germany. While all four are slightly different from the original Suggestopedia and from each other, they still share the common traits of music, relaxation, and suggestion. It is important to stand out that those variants of Suggestopedia mentioned above are way too far from the original concept and are based on the early experiments, which were left behind during the new improvements of the method.
- Richards, J.C. and Rodgers, T.S. (2001). Approaches and Methods in Language Teaching (2nd ed.). Cambridge: Cambridge University Press
- Lozanov, Georgi. Suggestology and Suggestopedy. http://lozanov.hit.bg/ 4/30/2006
- Harmer, Jeremy. The Practice of English Language Teaching. 3rd Edition. Person Education Limited, 2001
- Lozanov, Georgi. Suggestopaedia - Desggestive Teaching Communicative Method on the Level of the Hidden Reserves of the Human Mind. http://dr-lozanov.dir.bg/book/start_book.htm 4/30/2006
- Journal of Suggestive Accelerative Learning and Teaching, v3 n3 Fall 1978
- Felix, Uschi (1989). An Investigation of the Effects of Music, Relaxation and Suggestion in Sceond Language Acquisition in Schools (PhD thesis). Flinders University, Adelaide. pp. Chapter 2.7. Retrieved January 12, 2012.
- Idiomus Aprendizagem Acelerada = http://www.idiomus.com.br
- Edelmann, Walter, Suggestgopädie/Superlearning, Heidelberg: Ansanger, 1998.
- Lozanov, Georgi, Suggestology and Outlines of Suggestopedy, New York: Gordon & Breach 1978 (Translation of: Nauka i Iskustvi, Sofia 1971).
- Meier, Josef, Mehr Freude und Erfolg beim Englischlernen mit innovativen Lern- und Mentaltechniken, München:IBS, 1999.
- Riedel, Katja, Persönlichkeitsentfaltung durch Suggestopädie, Hohengehren: Schneider, 1995.
- Schiffler, Ludger, Suggestopädie und Superlearning - empirisch geprüft. Einführung und Weiterentwicklung für Schule und Erwachsenenbildung, Frankfurt am Main: Diesterweg, 1989.
- Schiffler, Ludger, La Suggestopédie et le Superlearning - Mise à l'épreuve statistique, Paris: Didier Erudition, 1991.
- Schiffler, Ludger: "Suggestopedic Methods and Applications", Philadelphia, Tokyo, Paris etc.: Gordon & Breach Science Publisher, 1992.
- Schiffler, Ludger, Effektiver Fremdsprachen lehren und lernen - Beide Gehirnhälften aktivieren, Donauwörth: Auer, 2002.
- Schiffler, Ludger, Interhemispheric Foreign Language Learning - Activating Both Sides of the Brain, online 2003 (732KB )(download available: http://www.ludger-schiffler.de).
- Felix, Uschi (1989). An Investigation of the Effects of Music, Relaxation and Suggestion in Second Language Acquisition in Schools (PhD thesis). Flinders University, Adelaide. Retrieved January 12, 2012.