SERVQUAL:It is a multidimensional research instrument, designed to capture consumer expectations and perception of service along the five dimensions (reliability, assurance, tangibles, empathy, responsiveness) of service quality.The SERVQUAL questionnaire has been described as "the most popular standardized questionnaire to measure service quality." Service firms use this instrument to measure service quality and customer satisfaction.SERVPREF:Cronin and Taylor proposed that the perception of performance is the only criteria for service quality and developed the SERVPREF model.It focused on trying to overcome the "perceptions-minus-expectations" measurement focus of SERVQUAL.The SERVPREF model aimed to provide an alternative method of measuring perceived service quality and the importance of the relationship between service quality, customer satisfaction, and purchase intentions.DINESERV:Dining consumers determine which restaurants meet their service quality and value standards.DINESERV is proposed as a reliable, relatively simple tool for determining how consumers view a restaurant's quality.The 29 item DINESERV questionnaire comprises service-quality standards that fall into five categories: assurance, empathy, reliability, responsiveness, and tangibles. RSQS:RSQS is an abbreviation of the Retail Service Quality Scale.As service quality plays a vital role in creating quality perception, retail service quality is also associated with future consumption behavior in terms of customer's intention to visit, purchase, and recommend to others.RSQS is a 28 item scale with five dimensions: physical aspect, reliability, personal interaction, problem-solving, and policy development. Therefore, survey instruments used to assess customer perception of service quality are called SERVQUAL, SERVPREF, DINESERV, RSQS.CETSCALE:The consumer ethnocentrism tendencies scale (CETSCALE) was developed by Shimp and Sharma in 1987 to measure consumer ethnocentrism.Consumer ethnocentrism focuses on the responsibility and morality of purchasing foreign products vs. consumer's loyalty towards products made in their own country.For the ethnocentric consumer, the perception of importing products is not appropriate because it is not patriotic, as a result, ethnocentric consumers will evaluate their products differently from those manufactured in other countries. It is the most commonly used scale in marketing literature.