The researcher claimed that the dimensions were sufficiently generic that they could cover a wide spectrum of service sectors.
Since this pioneering work, many others have tried to duplicate these findings in a variety of services settings. Some researchers have confirmed these findings and therefore the model; however, most failed to do so. It was particularly difficult to find the same five generic quality dimensions- that is, the various sub-dimensions did not aggregate as in the Parasumaran et al studies. Furthermore, the comprehensiveness of the five dimensions could not always be supported. In other words, it was doubted whether the service quality construct could be composed of five dimensions.