The gap model
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The GAP model shows the perception gap between expected and perceived service quality based on research of service providers. It outlines factors that contribute to this gap, including word of mouth, personal needs, past experience, service delivery, and external communications shaping expected service. The model provides a detailed analysis of contributors to perception gaps, highlighting the importance of marketing, leadership, and HR systems in managing expectation gaps.
The gap model
- 1. The GAP model • The figure shows the "GAP" model of service quality from Parasuraman et al. (Zithaml & Bitner 1996). This model offers an integrated view of the consumer-company relationship. It is based on substantial research amongst a number of service providers. • In common with the Grönroos model it shows the perception gap (Gap 5) and outlines contributory factors. In this case expected service is a function of word of mouth communication, personal need and past experience, and perceived service is a product of service delivery and external communications to consumers. • This level of detail allows powerful analysis of the contributory factors to a perception gap at a practical level. The model shows the importance of marketing, business leadership quality and HR systems in the management of the expectation gap.
- 2. Parasuraman et al. GAP model (Zeithaml 1996)
- 3. Parasuraman et al. GAP model (Zeithaml 1996) • Gap 1 – Inadequate market research orientation – Lack of upward communication – Insufficient relationship focus • Gap 2 – Absence of customer driven standards – Inadequate service leadership – Poor service design
- 4. • Gap 3 – Deficiencies of human resource policies – Failure to match supply and demand – Customers not fulfilling roles • Gap 4 – Ineffective management of customer expectations – Overpromising – Inadequate horizontal communications