Six Sigma ogverview - Six Sigma

Six Sigma literature tends to present overwhelmingly ‘how to’ techniques along with the positive aspects of this approach and, with very few exceptions, avoids discussing its problems and failures (McAdam & Laferty, 2004). Thus, the majority of Six Sigma literature can described as introductory, dealing with elementary principles of Six Sigma and ‘selling it as a valuable management philosophy (Goh, 2002; Banuelas et al, 2005).This creates certain disulfides with critically assessing Six Sigma.

However, there is some evidence that Six Sigma has some negative aspects (Lee, 2001). This critique draws on publications critiquing Six Sigma and on those that propose amendments and extensions to Six Sigma concept. The logic of this is that, by proposing modifications and extensions the authors imply (if they do not state explicitly) gaps and issues with existing Six Sigma principles or practices. Examples of attempts to integrate Six Sigma with other quality improvements approaches include: TQM (Hammer and Goding, 2001; Revere and Black, 2003), Human Resource Functions (Wyper and Harrison, 2000), Lean Production (Antony et al, 2003), EFQM BEM (Raisinghani et al, 2005), ISO standards (Catherwood, 2002; Dalgleish, 2003) and even the capability maturity model (Murugappan and Keeni, 2003).


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