{"id":13653,"date":"2014-05-12T07:17:22","date_gmt":"2014-05-12T12:17:22","guid":{"rendered":"https:\/\/staging.opexlearning.com\/resources\/?p=13653"},"modified":"2020-09-06T20:15:59","modified_gmt":"2020-09-07T01:15:59","slug":"pdca-cycle-or-pdsa-cycle-which-is-right","status":"publish","type":"post","link":"https:\/\/staging.opexlearning.com\/resources\/pdca-cycle-or-pdsa-cycle-which-is-right\/13653\/","title":{"rendered":"PDCA Cycle or PDSA Cycle &#8211; Which is Right?"},"content":{"rendered":"<p>There&#8217;s quite a bit of confusion between the use <a title=\"lego style pdca\" href=\"https:\/\/staging.opexlearning.com\/resources\/pdca-cycle-lego-style\/10509\/\">PDCA Cycle<\/a> versus PDSA Cycle. For those unfamiliar with the acronym, PDCA stands for Plan-Do-Check-Act and PDSA stands for Plan-Do-Study-Act. To some, the change of &#8220;check&#8221; to &#8220;study&#8221; might be trivial, but to Dr. Deming and his teacher, Dr. Walter Shewhart, there is a difference between &#8220;check&#8221; and &#8220;study&#8221;.<\/p>\n<p>The PDCA or PDSA Cycle began as a series of steps within the world of product development. It wasn&#8217;t until much later did it become a method for process improvement. Let&#8217;s go through the history together.<\/p>\n<p>Below are the elements in the Toyota House, followed by the rest of the PDCA or PDSA article.<\/p>\n<div align=\"center\">\r\n<table cellpadding=\"0\" style=\"width: 819px;\">\r\n<tbody>\r\n<tr>\r\n<td style=\"width: 228px;\">\r\n<ul>\r\n<li><a href=\"\/resources\/about-peter-abilla\/what-is-lean\/\" onclick=\"__gaTracker('send', 'event', 'outbound-article', '\/about-peter-abilla\/what-is-lean\/', 'What is Lean?');\" title=\"what is lean manufacturing or lean management?\">What is Lean?<\/a><\/li>\r\n<li><a href=\"\/resources\/about-peter-abilla\/what-is-heijunka\/\" onclick=\"__gaTracker('send', 'event', 'outbound-article', '\/about-peter-abilla\/what-is-heijunka\/', 'What is Heijunka?');\" title=\"what is heijunka in lean manufacturing\">What is Heijunka?<\/a><\/li>\r\n<li><a href=\"\/resources\/about-peter-abilla\/what-is-andon-in-the-toyota-production-system\/\" onclick=\"__gaTracker('send', 'event', 'outbound-article', '\/about-peter-abilla\/what-is-andon-in-the-toyota-production-system\/', 'What is Andon cord?');\" title=\"what is andon in lean manufacturing and the toyota production system\">What is Andon cord?<\/a><\/li>\r\n<li><a href=\"\/resources\/about-peter-abilla\/what-is-poka-yoke\/\" onclick=\"__gaTracker('send', 'event', 'outbound-article', '\/about-peter-abilla\/what-is-poka-yoke\/', 'What is Poka Yoke?');\" title=\"define poka yoke\">What is Poka Yoke?<\/a><\/li>\r\n<li><a href=\"\/?s=kaizen\" onclick=\"__gaTracker('send', 'event', 'outbound-article', '\/?s=kaizen', 'What is Kaizen?');\" title=\"what is kaizen in lean manufacturing and the toyota production system\">What is Kaizen?<\/a><\/li>\r\n<li><a href=\"\/resources\/batch-and-queue-or-single-piece-flow\/270\/\" onclick=\"__gaTracker('send', 'event', 'outbound-article', '\/batch-and-queue-or-single-piece-flow\/270\/', 'What is One Piece Flow?');\" title=\"what is one piece flow, single piece flow in lean manufacturing\">What is One Piece Flow?<\/a><\/li>\r\n<li><a href=\"\/resources\/about-peter-abilla\/what-is-kanban\/\" onclick=\"__gaTracker('send', 'event', 'outbound-article', '\/about-peter-abilla\/what-is-kanban\/', 'What is Kanban?');\" title=\"what is kanban in lean manufacturing\">What is Kanban?<\/a><\/li>\r\n<li><a href=\"\/resources\/about-peter-abilla\/what-is-push-vs-pull-strategy\/\" onclick=\"__gaTracker('send', 'event', 'outbound-article', '\/about-peter-abilla\/what-is-push-vs-pull-strategy\/', 'What is Pull versus Push?');\" title=\"what is push vs pull strategy?\">What is Pull versus Push?<\/a><\/li>\r\n<li><a href=\"\/resources\/about-peter-abilla\/what-is-just-in-time-manufacturing\/\" onclick=\"__gaTracker('send', 'event', 'outbound-article', '\/about-peter-abilla\/what-is-just-in-time-manufacturing\/', 'What is Just in Time?');\" title=\"what is just in time manufacturing in lean production\">What is Just in Time?<\/a><\/li>\r\n<li><a href=\"\/resources\/about-peter-abilla\/what-is-smed-and-quick-changeover\/\" onclick=\"__gaTracker('send', 'event', 'outbound-article', '\/about-peter-abilla\/what-is-smed-and-quick-changeover\/', 'What is SMED?');\" title=\"what is smed, single minute exchange of dies, and quick changeover in lean manufacturing\">What is SMED?<\/a><\/li>\r\n<li><a href=\"\/resources\/the-toyota-a3-report\/363\/\" onclick=\"__gaTracker('send', 'event', 'outbound-article', '\/the-toyota-a3-report\/363\/', 'What is a Toyota A3 Report?');\" title=\"what is toyota a3 report in lean manufacturing?\">What is a Toyota A3 Report?<\/a><\/li>\r\n<li><a href=\"\/resources\/5s\/180\/\" onclick=\"__gaTracker('send', 'event', 'outbound-article', '\/5s\/180\/', 'What is 5S?');\" title=\"what is 5S in lean manufacturing and the toyota production system\">What is 5S?<\/a><\/li>\r\n<li><a href=\"\/resources\/manage-for-daily-improvement-lean-manufacturing-system\/\" onclick=\"__gaTracker('send', 'event', 'outbound-article', '\/manage-for-daily-improvement-lean-manufacturing-system\/', 'What is Shop Floor Management?');\" title=\"what is lean shop floor management all about?\">What is Shop Floor<br \/>Management?<\/a><\/li>\r\n<li><a href=\"\/resources\/what-is-kata-process-improvement\/22073\/\" onclick=\"__gaTracker('send', 'event', 'outbound-article', '\/what-is-kata-process-improvement\/22073\/', 'What is Kata?');\" title=\"What is Improvement Kata?\">What is Kata?<\/a><\/li>\r\n<li><a href=\"\/resources\/the-theory-of-constraints-the-fundamentals\/2632\/\">What is the Theory of Constraints (TOC)?<\/a><\/li>\r\n<\/ul>\r\n<\/td>\r\n<td style=\"width: 337px;\">\r\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-15757 size-full\" src=\"https:\/\/staging.opexlearning.com\/resources\/wp-content\/uploads\/2014\/11\/toyota-house-production-system-lean.gif\" alt=\"the toyota house, lean manufacturing\" width=\"400\" height=\"379\" \/><\/p>\r\n<\/td>\r\n<td style=\"width: 254px;\">\r\n<ul>\r\n<li><a href=\"\/resources\/about-peter-abilla\/what-is-lean-leadership\/\" onclick=\"__gaTracker('send', 'event', 'outbound-article', '\/about-peter-abilla\/what-is-lean-leadership\/', 'What is Lean Leadership?');\" title=\"what does lean leadership mean?\">What is Lean Leadership?<\/a><\/li>\r\n<li><a href=\"\/resources\/respect-for-people-principle-lean-management\/14553\/\" onclick=\"__gaTracker('send', 'event', 'outbound-article', '\/respect-for-people-principle-lean-management\/14553\/', 'What is Respect for People?');\" title=\"what is respect for people in lean manufacturing\">What is Respect for People?<\/a><\/li>\r\n<li><a href=\"\/resources\/root-cause-analysis\/172\/\" onclick=\"__gaTracker('send', 'event', 'outbound-article', '\/root-cause-analysis\/172\/', 'What is the 5 Whys?');\" title=\"what are the 5 whys and root cause analysis in lean manufacturing\">What is the 5 Whys?<\/a><\/li>\r\n<li><a href=\"\/resources\/about-peter-abilla\/what-is-takt-time\/\" onclick=\"__gaTracker('send', 'event', 'outbound-article', '\/about-peter-abilla\/what-is-takt-time\/', 'What is Takt Time?');\" title=\"What is Takt Time in the Toyota Production System?\">What is Takt Time?<\/a><\/li>\r\n<li><a href=\"\/resources\/about-peter-abilla\/what-is-gemba-and-gemba-walk\/\" onclick=\"__gaTracker('send', 'event', 'outbound-article', '\/about-peter-abilla\/what-is-gemba-and-gemba-walk\/', 'What is Gemba?');\" title=\"what is gemba? what is a gemba walk?\">What is Gemba?<\/a><\/li>\r\n<li><a href=\"\/resources\/genchi-genbutsu-go-and-see-part-1\/2896\/\" onclick=\"__gaTracker('send', 'event', 'outbound-article', '\/genchi-genbutsu-go-and-see-part-1\/2896\/', 'What is Genchi Genbutsu?');\" title=\"genchi genbutsu, go and see, lean manufacturing\">What is Genchi Genbutsu?<\/a><\/li>\r\n<li><a href=\"\/resources\/about-peter-abilla\/what-is-standard-work\/\" onclick=\"__gaTracker('send', 'event', 'outbound-article', '\/about-peter-abilla\/what-is-standard-work\/', 'What is Standard Work?');\" title=\"what is standard work or standardized work in the toyota production system?\">What is Standard Work?<\/a><\/li>\r\n<li><a href=\"\/resources\/pdca-cycle-or-pdsa-cycle-which-is-right\/13653\/\" onclick=\"__gaTracker('send', 'event', 'outbound-article', '\/pdca-cycle-or-pdsa-cycle-which-is-right\/13653\/', 'What is Plan-Do-Check-Act?');\" title=\"what is PDCA in lean manufacturing and the toyota production system\">What is Plan-Do-Check-Act?<\/a><\/li>\r\n<li><a href=\"\/resources\/about-peter-abilla\/what-is-value-stream-mapping\/\" onclick=\"__gaTracker('send', 'event', 'outbound-article', '\/about-peter-abilla\/what-is-value-stream-mapping\/', 'What is Value Stream Mapping?');\" title=\"what is value stream mapping and its benefits\">What is Value Stream Mapping?<\/a><\/li>\r\n<li><a href=\"\/resources\/about-peter-abilla\/what-is-visual-management\/\" onclick=\"__gaTracker('send', 'event', 'outbound-article', '\/about-peter-abilla\/what-is-visual-management\/', 'What is Visual Management?');\" title=\"what is visual management in lean manufacturing\">What is Visual Management?<\/a><\/li>\r\n<li><a href=\"\/resources\/about-peter-abilla\/what-is-mura-muri-muda\/\" onclick=\"__gaTracker('send', 'event', 'outbound-article', '\/about-peter-abilla\/what-is-mura-muri-muda\/', 'What is Mura, Muri, Muda?');\" title=\"what is mura, muri, muda in toyota production system?\">What is Mura, Muri, Muda?<\/a><\/li>\r\n<li><a href=\"\/resources\/about-peter-abilla\/what-is-jidoka\/\" onclick=\"__gaTracker('send', 'event', 'outbound-article', '\/about-peter-abilla\/what-is-jidoka\/', 'What is Jidoka?');\" title=\"what is jidoka in lean manufacturing\">What is Jidoka?<\/a><\/li>\r\n<li><a href=\"\/resources\/about-peter-abilla\/what-is-hoshin-kanri-in-lean-manufacturing\/\" onclick=\"__gaTracker('send', 'event', 'outbound-article', '\/about-peter-abilla\/what-is-hoshin-kanri-in-lean-manufacturing\/', 'What is Hoshin Kanri?');\" title=\"what is hoshin kanri in lean manufacturing\">What is Hoshin Kanri?<\/a><\/li>\r\n<li><a href=\"\/resources\/?s=lean+startup\">What is Lean Startup?<\/a><\/li>\r\n<li><a href=\"\/resources\/what-is-the-role-of-the-waterspider-in-lean-manufacturing\/22565\/\">What is a Water Spider?<\/a><\/li>\r\n<li><a href=\"\/resources\/what-is-cellular-manufacturing\/23483\/\">What is Cellular Manufacturing?<\/a><\/li>\r\n<\/ul>\r\n<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n<\/div>\n<h2>1. The Shewhart Cycle<\/h2>\n<p><a title=\"shewhart bio\" href=\"https:\/\/staging.opexlearning.com\/resources\/walter-shewhart\/7409\/\">Dr. Walter Shewhart<\/a> is best known for his development of statistical control. Back in 1939, Dr. Shewhart struggled with the current view of his time regarding quality and product development. He didn&#8217;t believe it was a linear model, but rather a cycle. In his words,<\/p>\n<blockquote><p>These three steps must go in a circle instead of in a straight line, as shown . . . It may\u00a0be helpful to think of the three steps in the mass production process as steps in the\u00a0scientific method. In this sense, specification, production, and inspection correspond\u00a0respectively to making a hypothesis, carrying out an experiment, and testing the\u00a0hypothesis. The three steps constitute a dynamic scientific process of acquiring\u00a0knowledge. <sup class='footnote'><a href='#fn-13653-1' id='fnref-13653-1' onclick='return fdfootnote_show(13653)'>1<\/a><\/sup><\/p><\/blockquote>\n<p>In his mind, it looked like this:<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-13654\" src=\"https:\/\/staging.opexlearning.com\/resources\/wp-content\/uploads\/2014\/05\/shewhart-cycle.png\" alt=\"shewhart cycle diagram\" width=\"241\" height=\"232\" \/><\/p>\n<h2>2. The Deming Wheel<\/h2>\n<p>Dr. Walter Shewhart&#8217;s student at the time was Dr. W. Edwards Deming. It was Deming who took the Shewhart Cycle and modified it. In 1950, while speaking to the Japanese Union of Scientists and Engineers (JUSE) regarding statistical quality control, Dr. Deming modified the Shewhart Cycle by adding a 4th step that he called &#8211; at the time &#8211; &#8220;redesign through marketing research&#8221;. Historians believe that it was at that meeting the term &#8220;Deming Wheel&#8221; was born <sup class='footnote'><a href='#fn-13653-2' id='fnref-13653-2' onclick='return fdfootnote_show(13653)'>2<\/a><\/sup>.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-13655\" src=\"https:\/\/staging.opexlearning.com\/resources\/wp-content\/uploads\/2014\/05\/deming-wheel-graphic.png\" alt=\"deming wheel image in pdsa\" width=\"331\" height=\"306\" srcset=\"https:\/\/staging.opexlearning.com\/resources\/wp-content\/uploads\/2014\/05\/deming-wheel-graphic.png 331w, https:\/\/staging.opexlearning.com\/resources\/wp-content\/uploads\/2014\/05\/deming-wheel-graphic-300x277.png 300w\" sizes=\"(max-width: 331px) 100vw, 331px\" \/><\/p>\n<p>At that meeting, Dr. W. Edwards Deming discussed these steps:<\/p>\n<ol>\n<li>Design the product<\/li>\n<li>Make it and test in lab and production line<\/li>\n<li>Launch the product<\/li>\n<li>Test it in service via market research and user interviews<\/li>\n<li>Redesign and improve the product given customer&#8217;s feedback<\/li>\n<\/ol>\n<h2>3. PDCA Cycle is Born<\/h2>\n<p>According to Misaki Imai, Japanese executives took the Deming Wheel from that 1950 seminar and called it PDCA and took Deming&#8217;s steps (1-4) and codified it as Plan-Do-Check-Act <sup class='footnote'><a href='#fn-13653-3' id='fnref-13653-3' onclick='return fdfootnote_show(13653)'>3<\/a><\/sup>.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-13656\" src=\"https:\/\/staging.opexlearning.com\/resources\/wp-content\/uploads\/2014\/05\/pdca-cycle-in-japan.png\" alt=\"pdca cycle from misaki imai\" width=\"773\" height=\"322\" srcset=\"https:\/\/staging.opexlearning.com\/resources\/wp-content\/uploads\/2014\/05\/pdca-cycle-in-japan.png 773w, https:\/\/staging.opexlearning.com\/resources\/wp-content\/uploads\/2014\/05\/pdca-cycle-in-japan-600x250.png 600w, https:\/\/staging.opexlearning.com\/resources\/wp-content\/uploads\/2014\/05\/pdca-cycle-in-japan-300x124.png 300w\" sizes=\"(max-width: 773px) 100vw, 773px\" \/><\/p>\n<p>According to Imai, in the 1960&#8217;s, the what was initially the Deming Wheel was called PDCA by the Japanese. It evolved from a method to describe product development to become a method for process improvement.<\/p>\n<h2>4. PDSA Cycle is Reborn<\/h2>\n<p>In 1986, Dr. W. Edwards Deming reintroduces the Shewhart Cycle and warned his audience that Plan-Do-Check-Act (PDCA) version is not accurate because the English definition for &#8220;check&#8221; means to &#8220;hold back&#8221;. Deming continues by encouraging his audience to use Plan-Do-Study-Act (PDSA) and not the &#8220;corruption PDCA&#8221; <sup class='footnote'><a href='#fn-13653-4' id='fnref-13653-4' onclick='return fdfootnote_show(13653)'>4<\/a><\/sup>.<\/p>\n<h2>5. PDCA or PDSA?<\/h2>\n<p>I&#8217;m not picking sides. I&#8217;ve always used PDCA. In fact, at Toyota PDCA is the recognized and approved framework, not PDSA. I&#8217;m not sure if that matters. I think in the grand scheme of things, in practice it really doesn&#8217;t matter. But, to theoreticians and academics, they will likely continue to quibble over PDCA versus PDSA. But for practitioners like you and me, we&#8217;ll be busy making things better.<\/p>\n<p>What&#8217;s your opinion? Does it matter to you? <sup class='footnote'><a href='#fn-13653-5' id='fnref-13653-5' onclick='return fdfootnote_show(13653)'>5<\/a><\/sup><br \/>\n<\/p>\n<div class='footnotes' id='footnotes-13653'>\n<div class='footnotedivider'><\/div>\n<ol>\n<li id='fn-13653-1'> Shewhart, W. A. 1939. Statistical Method from the Viewpoint of Quality Control. Department of Agriculture. Dover, 1986, page 45 <span class='footnotereverse'><a href='#fnref-13653-1'>&#8617;<\/a><\/span><\/li>\n<li id='fn-13653-2'> Deming, W.E. 1950. Elementary Principles of the Statistical Control of Quality, JUSE <span class='footnotereverse'><a href='#fnref-13653-2'>&#8617;<\/a><\/span><\/li>\n<li id='fn-13653-3'> Imai, M. 1986. Kaizen: The Key to Japan&#8217;s Competitive Success. New York: Random House, page 60 <span class='footnotereverse'><a href='#fnref-13653-3'>&#8617;<\/a><\/span><\/li>\n<li id='fn-13653-4'> Deming, W.E. Personal letter to Ron Moen on November 17, 1990. <span class='footnotereverse'><a href='#fnref-13653-4'>&#8617;<\/a><\/span><\/li>\n<li id='fn-13653-5'> Some parts of this article was taken from &#8220;Evolution of the PDCA Cycle&#8221; by Ronald Moen and Clifford Norman <span class='footnotereverse'><a href='#fnref-13653-5'>&#8617;<\/a><\/span><\/li>\n<\/ol>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>There&#8217;s quite a bit of confusion between the use PDCA Cycle versus PDSA Cycle. For those unfamiliar with the acronym, PDCA stands for Plan-Do-Check-Act and PDSA stands for Plan-Do-Study-Act. To some, the change of &#8220;check&#8221; to &#8220;study&#8221; might be trivial, but to Dr. Deming and his teacher, Dr. Walter Shewhart, there is a difference between [&hellip;]<\/p>\n","protected":false},"author":12327,"featured_media":13655,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"_genesis_hide_title":false,"_genesis_hide_breadcrumbs":false,"_genesis_hide_singular_image":false,"_genesis_hide_footer_widgets":false,"_genesis_custom_body_class":"","_genesis_custom_post_class":"","_genesis_layout":"","footnotes":""},"categories":[16],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v23.0 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>PDCA Cycle or PDSA Cycle: Which is Right?<\/title>\n<meta name=\"description\" content=\"There&#039;s debate between the use of PDCA Cycle versus PDSA Cycle. This article goes through the history and explains the origins.\" \/>\n<meta name=\"robots\" content=\"noindex, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"PDCA Cycle or PDSA Cycle: Which is Right?\" \/>\n<meta property=\"og:description\" content=\"There&#039;s debate between the use of PDCA Cycle versus PDSA Cycle. This article goes through the history and explains the origins.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/staging.opexlearning.com\/resources\/pdca-cycle-or-pdsa-cycle-which-is-right\/13653\/\" \/>\n<meta property=\"og:site_name\" content=\"OpEx Learning\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/get.shmula\" \/>\n<meta property=\"article:published_time\" content=\"2014-05-12T12:17:22+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2020-09-07T01:15:59+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/staging.opexlearning.com\/resources\/wp-content\/uploads\/2014\/05\/deming-wheel-graphic.png\" \/>\n\t<meta property=\"og:image:width\" content=\"331\" \/>\n\t<meta property=\"og:image:height\" content=\"306\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"author\" content=\"Uday Kawar\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@shmula\" \/>\n<meta name=\"twitter:site\" content=\"@shmula\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Uday Kawar\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"3 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/staging.opexlearning.com\/resources\/pdca-cycle-or-pdsa-cycle-which-is-right\/13653\/\",\"url\":\"https:\/\/staging.opexlearning.com\/resources\/pdca-cycle-or-pdsa-cycle-which-is-right\/13653\/\",\"name\":\"PDCA Cycle or PDSA Cycle: Which is Right?\",\"isPartOf\":{\"@id\":\"https:\/\/staging.opexlearning.com\/resources\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/staging.opexlearning.com\/resources\/pdca-cycle-or-pdsa-cycle-which-is-right\/13653\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/staging.opexlearning.com\/resources\/pdca-cycle-or-pdsa-cycle-which-is-right\/13653\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/staging.opexlearning.com\/resources\/wp-content\/uploads\/2014\/05\/deming-wheel-graphic.png\",\"datePublished\":\"2014-05-12T12:17:22+00:00\",\"dateModified\":\"2020-09-07T01:15:59+00:00\",\"author\":{\"@id\":\"https:\/\/staging.opexlearning.com\/resources\/#\/schema\/person\/9335b5223b67189b35bda7d6be11c3fd\"},\"description\":\"There's debate between the use of PDCA Cycle versus PDSA Cycle. 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