Quality Quarters – PDSA
The Plan Do Study Act cycle was developed from the Plan Do Check Act cycle named by Walter Shewhart.
It originated from the Japanese engineering industry, where the cycle was used to prevent the reoccurrence of errors.
In the 1980’s W.E. Deming, an engineer and statistician, adapted the PDCA cycle to the PDSA cycle to emphasise the need to study the results of testing, he described the cycle as a flow diagram for learning and for improvement of a product or of a process.
