{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,5,13]],"date-time":"2025-05-13T15:43:43Z","timestamp":1747151023939,"version":"3.40.5"},"reference-count":30,"publisher":"Wiley","issue":"1","license":[{"start":{"date-parts":[[2024,2,6]],"date-time":"2024-02-06T00:00:00Z","timestamp":1707177600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc-nd\/4.0\/"}],"funder":[{"DOI":"10.13039\/100009619","name":"Japan Agency for Medical Research and Development","doi-asserted-by":"publisher","award":["22dk0307105h0001"],"award-info":[{"award-number":["22dk0307105h0001"]}],"id":[{"id":"10.13039\/100009619","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Neuropsychopharm Rep"],"published-print":{"date-parts":[[2024,3]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Aim<\/jats:title><jats:p>Psychedelics have recently gained attention as potential therapeutic agents for various psychiatric disorders. Previous research has highlighted that a diminished sense of self, commonly termed \u201cego\u2010dissolution\u201d is a pivotal feature of the psychedelic\u2010induced state. While the Ego\u2010Dissolution Inventory (EDI) is a widely acknowledged instrument for measuring this phenomenon, no Japanese version has been available. This study aimed to develop a Japanese version of the EDI.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>We adhered to the \u201cGuidelines for Best Practices in the Translation and Cultural Modification Process for Patient\u2010Reported Outcomes Instruments: Document from the ISPOR Committee on Translation and Cultural Modification\u201d during our translation approach. Two Japanese psychiatrists independently conducted initial translations, and a consolidated version was achieved via mutual agreement. This version was then back\u2010translated to English and assessed by the original authors for consistency. The repetitive modification process was conducted in continuous dialogues with the original authors until they accepted the concluding back\u2010translated version.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>The finalized, approved back\u2010translated version of the EDI is presented in the accompanying figure. In addition, the authorized Japanese version of the EDI is included in the Appendix.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>In this study, we successfully developed the Japanese version of the EDI. This instrument will assist in assessing ego\u2010dissolution experiences associated with psychedelic\u2010assisted therapy among Japanese speakers. Additional studies are necessary to evaluate the reliability and validity of this newly translated instrument.<\/jats:p><\/jats:sec>","DOI":"10.1002\/npr2.12419","type":"journal-article","created":{"date-parts":[[2024,2,7]],"date-time":"2024-02-07T07:24:11Z","timestamp":1707290651000},"page":"292-297","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Development of the Japanese version of the Ego\u2010Dissolution Inventory (EDI)"],"prefix":"10.1002","volume":"44","author":[{"given":"Keisuke","family":"Kusudo","sequence":"first","affiliation":[{"name":"Department of Neuropsychiatry Keio University School of Medicine  Tokyo Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Hideaki","family":"Tani","sequence":"additional","affiliation":[{"name":"Department of Neuropsychiatry Keio University School of Medicine  Tokyo Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Kengo","family":"Yonezawa","sequence":"additional","affiliation":[{"name":"Department of Neuropsychiatry Keio University School of Medicine  Tokyo Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4229-1910","authenticated-orcid":false,"given":"Shinichiro","family":"Nakajima","sequence":"additional","affiliation":[{"name":"Department of Neuropsychiatry Keio University School of Medicine  Tokyo Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Matthew M.","family":"Nour","sequence":"additional","affiliation":[{"name":"Department of Psychiatry University of Oxford  Oxford UK"},{"name":"University College London, Max Planck UCL Centre for Computational Psychiatry and Ageing Research  London UK"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Robin","family":"Carhart\u2010Harris","sequence":"additional","affiliation":[{"name":"University of California San Francisco Sandler Neurosciences Center  San Francisco California USA"},{"name":"Neurology, Psychiatry and Behavioral Sciences, Weill Institute for Neurosciences University of California San Francisco  San Francisco California USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0628-7036","authenticated-orcid":false,"given":"Hiroyuki","family":"Uchida","sequence":"additional","affiliation":[{"name":"Department of Neuropsychiatry Keio University School of Medicine  Tokyo Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2024,2,6]]},"reference":[{"key":"e_1_2_10_2_1","doi-asserted-by":"publisher","DOI":"10.1055\/a-1310-3990"},{"key":"e_1_2_10_3_1","doi-asserted-by":"publisher","DOI":"10.1177\/0269881116675771"},{"key":"e_1_2_10_4_1","doi-asserted-by":"publisher","DOI":"10.1177\/0269881116675513"},{"key":"e_1_2_10_5_1","doi-asserted-by":"publisher","DOI":"10.1177\/0269881116675512"},{"key":"e_1_2_10_6_1","doi-asserted-by":"publisher","DOI":"10.1056\/NEJMoa2206443"},{"key":"e_1_2_10_7_1","doi-asserted-by":"publisher","DOI":"10.3389\/fphar.2017.00974"},{"key":"e_1_2_10_8_1","doi-asserted-by":"publisher","DOI":"10.1016\/S2215-0366(16)30087-6"},{"key":"e_1_2_10_9_1","doi-asserted-by":"publisher","DOI":"10.1093\/ijnp\/pyaa018"},{"key":"e_1_2_10_10_1","doi-asserted-by":"publisher","DOI":"10.1080\/09540261.2021.1919062"},{"key":"e_1_2_10_11_1","doi-asserted-by":"publisher","DOI":"10.1080\/17512433.2018.1511424"},{"key":"e_1_2_10_12_1","doi-asserted-by":"publisher","DOI":"10.1007\/7854_2021_284"},{"key":"e_1_2_10_13_1","doi-asserted-by":"publisher","DOI":"10.3389\/fnhum.2016.00269"},{"key":"e_1_2_10_14_1","doi-asserted-by":"publisher","DOI":"10.1002\/hbm.22833"},{"key":"e_1_2_10_15_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.cub.2016.02.010"},{"key":"e_1_2_10_16_1","doi-asserted-by":"publisher","DOI":"10.3389\/fnhum.2017.00245"},{"key":"e_1_2_10_17_1","doi-asserted-by":"publisher","DOI":"10.3389\/fnhum.2014.00020"},{"key":"e_1_2_10_18_1","doi-asserted-by":"publisher","DOI":"10.1007\/s00213-011-2358-5"},{"key":"e_1_2_10_19_1","doi-asserted-by":"publisher","DOI":"10.1177\/0269881108094300"},{"key":"e_1_2_10_20_1","doi-asserted-by":"publisher","DOI":"10.1080\/02791072.2012.736842"},{"key":"e_1_2_10_21_1","doi-asserted-by":"publisher","DOI":"10.1080\/02791072.2009.10399905"},{"key":"e_1_2_10_22_1","doi-asserted-by":"publisher","DOI":"10.1055\/s-2007-979351"},{"key":"e_1_2_10_23_1","doi-asserted-by":"publisher","DOI":"10.1371\/journal.pone.0012412"},{"volume-title":"5D\u2010ASC: questionnaire for the assessment of altered states of consciousness. 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