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Influence of electronic word-of-mouth on customers’ purchasing decisions of tourism services in Bangladesh

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Influence of electronic word-of-mouth on customers’

purchasing decisions of tourism services in Bangladesh

Nasif Chowdhury

To cite this version:

Nasif Chowdhury. Influence of electronic word-of-mouth on customers’ purchasing decisions of tourism services in Bangladesh. 2016. �hal-01348143�

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Influence of electronic word-of-mouth on customers’

purchasing decisions of tourism services in

Bangladesh

Nasif Chowdhury,

Department of Business Administration, UCSI University, Malaysia.

email: nafischowdhury65@yahoo.com

ABSTRACT

For quite a long time, informal exchange has been an extremely successful instrument in showcasing tourism administrations. As of late, the data innovation advancement has given a considerably all the more capable edge for this instrument. This article reflect s upon this new advancement of electronic informal exchange and surveys its impact on clients' obtaining choices of tourism administrations in Bangladesh. The discoveries have affirmed that electronic word of mouth definite affects clients' purchasing choi ces and that tourism operation supervisors know about the criticalness of such a method. Accordingly, the administration has truly considered adapting to electronic verbal exchange in a compelling and express way.

Keywords: electronic word-of-mouth; information technology; customers‟ purchasing

decision, customers‟ retention. tourism service

INTRODUCTION

Word of mouth (WOM) has been a one of a kind advertising instrument for the accommodation business since the development of the promoting idea. It has been considered as one of the most seasoned and most settled promoting system (Arndt 1967:3). The way that explorers acknowledge discussing and share their experience, express their suppositions with others gives an unconstrained advancement (Goyett, Ricard, Bergeron and Marticotte, 2010; Litvin, Goldsmith and Pan, 2008). While the thought processes of individuals may change for giving such a guidance or criticism around a specific affair of a cordiality administration, the force of this sort of correspondence is huge.

Interpersonal impact and verbal exchange are positioned the most critical data source when a shopper is settling on a buy choice, especially in the cordiality and tourism area, whose elusive items are hard to assess preceding their utilization (Litvin et al. 2008). Additionally, the subjectivity of the communicated sentiments or judgments does not by any stretch of the imagination impact the noteworthiness of such experience because of the objectivity of item data accessible close by. Truth be told, buyers are liable to give verifiable data while utilizing influential dialect. This applies to both negative and positive informal (Hennig-Thurau, Gwinner, Walsh and Gremler, 2004).

What's more, Goyette et al. (2010) investigated the unmistakable way of verbal exchange because of the wide assortment of channels accessible for giving such proposals and interchanges. These channels are either individual or unoriginal. The individual channels may incorporate eye to eye, telephone, email, mailing list, or some other method for correspondence, notwithstanding companions, family, and associates. Other generic channels include sections, articles, analysis by columnists, customers, and specialists, other than, daily papers, magazines and particular productions.

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As of late, data innovation improvement has given a much all the more effective edge for this system. With the rise of e-promoting idea, electronic word of mouth (eWOM) and online exchange gatherings have taken the driving seat in the neighborliness showcasing space (Sormunen, 2009; Resnick, Zeckhauser, Friedman, and Kuwabara, 2000). Then again, the customary method for promoting; to be specific broad communications publicizing has turned out to be extremely costly and less reasonable particularly for individual cordiality associations when contrasted with a generally reachable and more financially savvy method for advertising (Sormunen, 2009). In addition, eWOM gives a wide exhibit of online-media which support both online and distributed correspondence around a specific brand, an item or an administration. These media incorporate, however are not constrained to recordings, email messages, utilization of online informal organizations and online discussions (Golan and Zaidner, 2008; Porter and Golan, 2006). Furthermore, eWOM is turning into a focal stage for intelligent promoting correspondence (Allsop, Bassett and Hoskins, 2007).

While this field is another one, a few endeavors have been made by specialists to research its inclination, attributes and measurements for more vigorous practices (Godes and Mayzlin, 2004; Gruen, Osmonbekov and Czaplewski, 2005; Vilpponen, Winter and Sundqvist, 2006). In any case, every one of these examinations were impacted by the qualities of the customary verbal exchange and not by any stretch of the imagination concentrated on the new pattern of the electronic form of this new pattern (Cruz and Fill, 2008; Reichheld, 2003). Still, a typical component between the customary verbal exchange and the electronic variant is the formation of enthusiastic connection that should be built up so as to ensure the viability of this media (Dobele, Toleman and Beverland, 2005). As such, eWOM applies the customary verbal practices to the online environment with the benefit of passing the showcasing message to a more extensive gathering of people; making the potential for exponential development in the message's introduction and impact (Golan and Zaidner, 2008).

LITERATURE REVIEW

The appearance of web applications in tourism and friendliness industry has advanced new method for promoting and interchanges. One of these methods is electronic verbal which appreciates the upside of being free of any business impact. As huge quantities of explorers are depending increasingly on web indexes to find travel and convenience data (Brey, So, Kim, and Morrison, 2007; Brown, Broderick, and Lee, 2007), electronic word of mouth will change the structure of travel data, its openness, and along these lines voyagers' information and impression of different travel and settlement items. The entrance of rapid correspondences framework into the homes of shoppers brought forth another arrangement of verbal promoting through PC directed channels (Golan and Zaidner, 2008).

Scholastic analysts of promoting and buyer conduct have been researching informal system as ahead of schedule as 1960s (Dichter, 1966; Arndt, 1967). Further, the examination reached out to investigate the effect of word of mouth exchange on the purchaser's acquiring choices (Godes and Mayzlin, 2004; Litvin et al. 2008; Wangenheim, 2005).

The customary verbal device is communicated as a correspondence amongst shopper and potential purchaser of an item or administration autonomous from any business inclination. It is likewise considered as a post-buy movement that requires both expectation and inspiration (Arndt, 1967; Haywood, 1989; Hennig-Thurau, Gwinner, Walsh, and Gremler, 2004). Endeavors to characterize electronic informal underscored the way of the method as "system improved verbal" (Juvertson, 2000). Be that as it may, the writing utilized an assortment of terms to depict this strategy e.g., "viral showcasing" (Vilpponen et al. 2006), "intuitive promoting" and "referral showcasing" (Blattberg and Deighton, 1991).

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A more strong definition by Imber and Toffler (2008) highlighted the strategy as the way toward building and keeping up client connections through online exercises to encourage the trading of thoughts, items, and administrations that fulfill the objectives of both purchaser and vender. Salzman, Matathia and O'Reilly (2003) tended to the definition in light of the qualities of the idea as an exchange of data through interpersonal organizations. Further, Wangenheim, (2005) tended to the noteworthiness of electronic word of mouth as it impacts dispositions, inclinations, buy expectations and basic leadership. A further investigation by Wiedemann (2005) and Litvin et al. (2008) affirmed a more extensive impact of the strategy as it may shape customers' desires, pre-use demeanors and even post-use impression of an item or administrations. This result even evaluated electronic verbal exchange at a more elevated amount than that of the great media instruments (Wiedemann, 2005). As respect estimation and assessment, Porter and Golan (2006) supported that the attitudinal viewpoints and behavioral change ought to be the base for such a methodology.

Specialists like Godes and Mayzlin (2004), Silverman (2001) and Singh (1990) have additionally considered the negative effect of informal. Document, Judd and Prince (1992) proposed a general model of positive and negative informal exchange as a result of administration experience with bleeding edge representatives. As the web innovation progressed, further research explored the likenesses and contrasts between the customary type of word of mouth and its new electronic rendition (Juvertson and Draper, 1997). While Helm (2000) proposed that the objective of electronic word of mouth is to augment reach and accomplish an upper hand, Juvertson (2000) bolstered an alternate idea as the targets of the electronic message ought to be to achieve and hold an extensive number of beneficiaries as new clients to ensure infiltration, dedication and recurrence. Welker (2002) proposed that viral endeavors ought to be measured in the measurements of speed (velocity of transmission), perseverance (to what extent it stays around) and transmission comfort (straightforwardness as to mental boundaries, expenses and taking care of). In addition, Litvin et al. (2008) tended to the moral issues connected with the utilization of eWOM and web innovations. Along these lines, this examination evaluates the impact of electronic word of mouth on clients' buying choices of neighborliness administrations in Bangladesh. It likewise assesses the administration reaction in this angle and reflects upon the eventual fate of new techniques for clients' maintenance and rehash business. In addition, the subject of validity of such an apparatus was additionally raised.

METHODOLOGY

The present study is exploratory in nature. It endeavors to evaluate the impact of eWOM on clients' obtaining choices of accommodation administrations in Bangladesh. It likewise assesses the administration reaction in this angle and reflects upon the eventual fate of new strategies for clients' maintenance and rehash business. A double review was directed to examine these points of view. One of which inspected the clients' perspectives of the impact of eWOM on their purchasing choices by means of a phone organized meeting. The other enquiry focused on the administration of the taking an interest in organizations utilizing an email study on an irregular example of 100 of four and five-star inns working in Bangladesh in different tourism destinations.

The analyst utilized the snowball method to recommend some potential visitor by soliciting each from the taking an interest in units to name and approach five of their visitors to react to the review. This methodology regarded to be suitable to keep away from any disservice for lodging visitors and to dodge the protest of the administration for reaching their visitors.

The visitors' overview included some profile questions about the individual clients. These inquiries included sexual orientation, calling, and age, and instructive level, motivation behind stay and nationality. Others questions included web openness, booking design, whether they are first-time client/rehash business, lastly clients' perspectives about the validity of the eWOM as respect a specific neighborliness item/benefit. Likewise, it doubted whether the eWOM impacted their buying choices.

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The aggregate number of taking an interest visitors added up to 165 interviewees as visitors were drawn nearer as a comfort test proposed by every inn operation. For the general directors' review, the analyst got back 33 out of the 100 aggregate messaged surveys with a reaction rate of 33%. The inquiries were identified with the administration input sources about their administrations, their perspectives about the validity of these sources, recurrence of investigation and how they regularly react to the eWOM. Different inquiries investigated the obligation of scanning and postliminary. Further inquiries inspected their observations about the impact of eWOM on the cordiality business when all is said in done and their operations specifically.

RESULTS

The demographic profile of respondents, their age bunch, instructive level, sex, calling, and reason for stay are appeared in table 1. They were circulated among various age classifications; of which the class running from 21-30 years of age displayed (26.1%), the classification extending from 31-40 years of age spoke to (32.1%), the class from 41-50 years of age (17%) lastly above 50 years of age (24.8%). The larger part of members got advanced education (78.8%), optional school training (15.7%) and others (5.5%). The male to female proportion was very nearly 1.5 to 1. As respects nationality, (88%) of the members were south asian nationals, (88%) Bangladeshi (5%)and the rest of the (7%) were American and Europe. As respects the motivation behind stay, the 69% of the members were on recreation, (23%) were on business trip and (8%) had different reasons.

Table 1 Participating Guests’ Profile

Age group % Educational level % Gender % Nationality % 21–30 26.1 Secondary school 15.7 Male 59.4 southasiasSSoutha

sinationals

88.0 31–40 32.1 Higher education 78.8 Female 40.6 Bangladeshi 5.0

41–50 17.0 Others 5.5 American,EU 7.0

Above 50 24.8

Profession % Purposeofstay % Regularityofbusiness %

Businessmen 16.9 Leisure 69.0 First-time user 83.7

Highly-professional jobs 45.7 Business 23.0 Repeat business 16.3 Medium-professional 10.1 Others 8.0

Retired 21.2

Others 6.1

Furthermore, first-time clients spoke to (83.7%) and rehash business clients (16.3%). As respects web availability, 156 of the respondents speaking to (94.5%) guaranteed that they have admittance to the web. Relating to the booking design, 55 of the individuals who have admittance to the web had considered booking their voyage by means of the web speaking to (33%) of the aggregate members (165). The real number of the individuals who booked by means of the web was 30 visitors speaking to (18.2%).

Answers of clients' perspectives about the validity of the eWOM around a specific friendliness item/benefit exhibited that 103 of respondents (62.4%) trusted that the eWOM is a dependable source to be considered, 30 respondents (18.2%) were unbiased, and 32 respondents did not hold that conviction (19.4%). Answers to whether the eWOM affected their obtaining choices, 96 clients speaking to (58.2) % of the aggregate respondents conceded positive impact, 36 clients (21.8%) were

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unbiased and the rest of the 33 clients (20%) did not visualize any impact.

Table 2

Consumers’ Response and Views to Survey Questions

Internetaccessibility % Bookingpattern % Credibility ofeWOM% Influence of eWOM% Have access 94.5 Via the internet 18.2 Credible source 62.4 Positive influence 58.2 Do not have access 5.5 Other means 81.8 Neutral 18.2 Neutral 21.8 Not credible 19.4 No influence 20.0

The consequences of the second review mirrored the administration discernments and perspectives about the adequacy of eWOM. Some broad inquiries were initially raised as respects the accommodation business by and large and their operation specifically. Case in point their observation about the effect of eWOM on the friendliness business, 20 general directors looked for that it is an extraordinary open door (60.6%), 8 others trusted it is extremely useful and strong (24.2%) and the rest of the 5 of the members were unbiased (15.2%). Concerning the wellsprings of clients' criticism, 18 respondents expressed that visitor remark cards are the fundamental wellspring of reference for clients experience and input (54.6%), 7 respondents (21.2%) showed getting individual criticism by means of remarks coordinated to bleeding edge staff and administration and the online remarks got 8 reactions speaking to (24.2%). The analyst likewise asked the respondents with respect to their perspectives about the validity of visitor remark input and online sources, the answer to this inquiry indicated right around a split, 19 respondents saw visitor remark cards as a more tenable wellspring of criticism (57.6%), while 14 respondents (42.4%) were impartial.

Respondents were likewise asked whether they have an online overview on their lodging site. Twenty-eight of the aggregate respondents (84.8%) demonstrated positive answer, while the rest of the 5 (15.2%) had a negative answer. The recurrence of examination, 29 respondents (87.9%) expressed they assess their site twice every day, 3 respondents (9.1%) once every day and one and only respondent (3.0%) once at regular intervals. The type of answers to visitor remarks fluctuated among members. It went between answering straightforwardly online to the client, phone calls, or individual letters relying upon the circumstance, the remark and the legitimacy of the most proper activity. Different inquiries investigated the obligation of searching and postliminary. Eleven respondents (33.3%) demonstrated that it is the obligation of the General Manager, and afterward criticism is conveyed to the applicable department(s), ten respondents (30.3%) said it is the obligation of the showcasing and deals division lastly twelve respondents (36.4%) expressed that it was a joint obligation of all the colleagues of the operations, specifically, head offices and further correspondence and remarks by the General Manager are once in the past circled.

In a near evaluation question as respects the adequacy of the input techniques, all respondents settled upon the viability of the considerable number of strategies being used. They endorsed that visitor remark cards, direct remarks and eWOM are all viable as they give an important criticism to their operations with an equivalent weight for every alternative. Further inquiries analyzed their recognition about the impact of the eWOM on the profile-raising of their inn operations; they all concurred an unmistakable impact either positive or negative. Twenty-one respondents speaking to (63.6%) were in support, four of them were against (12.1%) and the staying eight were impartial (24.3%).

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The aftereffects of this exploration demonstrate that the cordiality business in Bangladesh - spoke to by the members - has all the earmarks of being particularly keen on electronic informal exchange as a device for unconstrained advancement. The rise of worldwide electronic markets and web innovation is seen as an open door for the friendliness organizations to enhance their focused edge. This study pinpoints issues of future strategies for clients' maintenance and rehash business as new method for advancement should be created. Along these lines, neighborliness directors ought to fortify better approaches for catching, breaking down, deciphering, and dealing with this new apparatus and watching nearly the impact that one purchaser may have on another by means of the utilization of eWOM.

The subject of validity of electronic informal exchange was additionally raised. The discoveries have affirmed that electronic verbal exchange is a sound source and henceforth definity affects clients' purchasing choices. Lodging directors have additionally recognized the importance and impact of eWOM too on clients' buying choices of neighborliness administrations in Bangladesh. They likewise gave different intends to adapt to this new form of the customary informal. They have additionally considered that this advancement has allowed them to cooperate and react viably to the past downsides of the customary verbal procedure. This new strategy has furnished them with the capacity to know on the spot, watch and watch both positive and negative inputs and empowered them to take restorative activities and meddle expeditiously to alter inappropriate execution, administration or item. The administration activities shifted to incorporate reacting to clients by means of the web, getting included in dialogs on informal communities as required. Other operational techniques included reporting the input to division heads and people expeditiously.

These discoveries additionally helped neighborliness administrators comprehend the style of messages conveyed by individuals with various inspirations. This comprehension empowered them to utilize some control over eWOM correspondence by making a medium to channel these inspirations. For instance, inns can set up an official page on Facebook/twitter to advance buyer communication and trade of eWOM. It additionally empowered them to collaborate with each other (social advantages), make inquiries (guidance looking for), give tips and purchasing exhortation (helping different customers, helping the organization), and compose item audits on the organization's site. Then again, negative eWOM on such locales offered open doors for issue determination also, particularly those persuaded to vent negative sentiments or caution different purchasers. Any positive results from issue determination can then be pitched on the site. Given the impact of psychological components of the message on its adequacy, administrators of audit sites ought to empower item surveys that are more useful and true and less subjective (i.e. high in judicious viewpoints). Understanding the inspirations for eWOM movement, particularly in online gatherings will support potential outcomes of affecting the engaging quality of merchandise or administrations through this vital correspondence system. Advertisers should center as much consideration on what purchasers say in regards to their inns on the web.

In the last investigation, the way that shoppers think sentiments posted online are reliable, pronounces the force of online audits. It is additionally a minimal effort device with a tremendous result. The administration reaction ought to consider viable strides, for example, amassing and assembling data (filtering) about eWOM remarks deliberately; characterize those remarks and afterward manage them suitably. Additionally, accommodation foundations will likewise need to enhance their own particular locales, support eWOM through outlining a survey page keeping in mind the end goal to profit by the clients' significant remarks.

REFERENCES :

Allsop, D.T., Bassett, B.R., & Hoskins, J.A. (2007). Word-of-Mouth Research: Principles and Applications,

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Arndt, J. (1967). Word of mouth advertising: A review of the literature. New York: Advertising Research Foundation.

Blattberg, R. C. and Deighton, J. (1991). Interactive marketing: exploiting the age of addressability. Sloan Management Review, 33 (1) 5-14.

Brey, E. T., So, S., Kim, D. & Morrison, A. M. (2007). Web-based permission marketing: Segmentation for the lodging industry, Tourism Management, 28 (6): 1408-1416.

Brown, J., Broderick, A. J. & Lee, N. (2007). Word of mouth communication within online communities: conceptualizing the online social network, Journal of Interactive Marketing, 21(3): 2-20.DOI:10.1002/dir.20082.

Cruz, D. and Fill, C. (2008). Evaluating viral marketing: isolating the key criteria", Marketing Intelligence & Planning, 26 (7): 743 – 758.

Dichter, E. (1966). How Word-of-Mouth Advertising Works. Harvard Business Review, 44 (6): 147-166.

Dobele, A, Toleman, D, &Beverland, M. (2005). Controlled infection! spreading the brand message through viral marketing, Business Horizons, 48: 143-149.

File, K. M., Judd, B. B. & Prince, R. A. (1992). Interactive marketing: the influence of participation on positive word-of-mouth and referrals, Journal of Services Marketing, 6 (4): 5-14.

Godes, D. and Mayzlin, D. (2004). Using online conversations to study word-of-mouth communications,

Marketing Science, 23(4): 545– 560.

Golan, G. J., &Zaidner, L. (2008). Creative strategies in viral advertising: an application of Taylor‟s six- segment message strategy wheel, Journal of Computer-Mediated Communication, 13 (4): 959-972. DOI: 10.1111/j.1083-6101.2008.00426.x

Goyett, I., Ricard, L., Bergeron, J. &Marticotte, F. (2010). E-WOM Scale: word-of-mouth measurement scale for e-services context, Canadian Journal of Administrative Sciences, 27 (1):5-23.DOI: 10.1002/cjas.129.

Gruen, T. W., Osmonbekov, T. &Czaplewski, A. (2005). How e-communities extend the concept of exchange in marketing: An application of the motivation, opportunity, ability (MOA) theory, Marketing Theory, 5 (1): 33-49.

Haywood, K. M. (1989). Managing word of mouth communications, Journal of Services Marketing, 3 (2): 55-67.

Helm, S. (2000). Viral marketing – establishing customer relationships by „word-of mouse‟, Electronic Markets, 10(3): 158–161.

Hennig-Thurau, T., Gwinner, K.P., Walsh, G. &Gremler, D. D. (2004). Electronic word-of-mouth via consumer opinion platforms: what motivates consumers to articulate themselves on the Internet, Journal of Interactive Marketing, 18 (1): 38-52.

Imber, J. and Toffler, B. (2008). Dictionary of marketing terms, (4th ed.). New York: Barron‟s EducationalSeries, Inc.

Jurvetson, S. and Draper, T. (1997). “Viral Marketing”, January 1, 1997. Available at:

http://www.dfj.com/news/article_26.shtml. [Accessed the 18th of July 2011, 20:30]

Juvertson, S. (2000). What is viral marketing. Draper Fisher Juvertson website. Retrieved from

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Litvin, S. W., Goldsmith, R. E., & Pan, B. (2008). Electronic word-of-mouth in hospitality and tourism management, Tourism Management, 29(3): 458-468. DOI: 10.1016/j.tourman.2007.05.011. Porter, L. & Golan, G. J. (2006). From subservient chickens to brawny men: A comparison of viral advertising to television advertising, Journal of Interactive Advertising, 6 (2): 26-33.

Reichheld, F. (2003). The one number you need to grow, Harvard Business Review, 46-54.

Resnick, P., Zeckhauser, R., Friedman, E. &Kuwabara, K. (2000). Reputation systems, Communications Of The ACM, 43(12): 45-48.

Salzman, M., Matathia, I., & O‟Reilly, A. (2003). Buzz: Harness the Power of Influence and Create Demand.

Hoboken, NJ, USA: John Wiley & Sons, Inc.

Silverman, G. (2001).Secrets of Word-of-Mouth Marketing. New York: Amacom Books.

Singh, J. (1990). Marketing, exit, and negative word-of-mouth behaviors: an investigation across three services categories', Journal of the academy of Marketing Science, 18: 1-15.

Sormunen, V. (2009). International Viral Marketing Campaign Planning and Evaluation, Master‟s Thesis in International Business, Helsinki School of Economics.

Vilpponen, A., Winter, S. &Sundqvist, S. (2006). Electronic word-of-mouth in online environments: exploring referral network structure and adoption behavior, Journal of Interactive Advertising, 6(2): 71– 86.

Wangenheim, F. V. (2005), Postswitching negative word of mouth, Journal of Service Research, 8 (1): 67-78. Welker, C. B. (2002). The paradigm of viral communication, Information Services and Use, 22: 3-8.

Wiedemann, D. G. (2005). Exploring the concept of mobile viral marketing through case study research, The Business Review, 3 (2): 49-60.

Figure

Table  1  Participating  Guests’

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