The Gap Model of Service Quality  has been developed by Parasuraman and his colleagues which helps to identify the gaps between the perceived service qualities that customers receive and what they expect.
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The Gap Model of Service Quality  identifies five gaps:
- Consumer expectation — management perception gap.
- Management perception — service quality expectation gap.
- Service quality specifications — service delivery gap.
- Service delivery — external communications to consumer’s gap.
- Expected service — perceived service gap.
Gap — 5 is the service quality shortfall as seen by the customers, and gaps 1-4 are shortfalls within the service organization.… Read the rest