Parasuraman & ctg (1985) prompted the study of quality of service and many researchers are quite comprehensive. These researchers launched the scale consists of five components, it is the level of reliability, capacity, degree of empathy, the capacity to serve a tangible medium, and are referred to as the SERVQUAL (Parasuraman & ctg 1994). SERVQUAL is the primary tool in marketing the service to assess quality. Parasuraman & ctg (1994) has constantly calibrated scales and consider different theories, and suggest that SERVQUAL scale is gaining credibility and value and can be applied in various service environments. However, there are also many studies show that the components of the quality of service varies in different contexts, such as type of service, market, etc. (Boller & Bakakus, 1992; Behara & ctg, 2002).
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