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  <front>
    <journal-meta />
    <article-meta>
      <title-group>
        <article-title>Preference to use aggregators rather than individ- ual deal sites: Impact of Big Five Inventory per- sonality traits</article-title>
      </title-group>
      <contrib-group>
        <aff id="aff0">
          <label>0</label>
          <institution>Antonin Pavlicek University of Economics, Faculty of Informatics and Statistics, Department of System Analysis</institution>
          ,
          <country country="CZ">Czech Republic</country>
        </aff>
        <aff id="aff1">
          <label>1</label>
          <institution>Frantisek Sudzina Aalborg University, Faculty of Social Sciences, Department of Business and Management</institution>
          ,
          <country country="DK">Denmark</country>
        </aff>
      </contrib-group>
      <abstract>
        <p>Deal sites are widely used for some time and there is a growing body of knowledge on them. There exists literature on infomediaries. But there is a gap when it comes to infomediaties focused on deal sites, i.e. aggregators of deal site offers. The research focused on impact of Big Five Inventory personality traits on whether respondents prefer visiting individual deal sites, or aggregators, or they do not have any preference and visit both. Gender was used as a control variable. With regards, to the results, conscientiousness agreeableness, and openness to experience influence the preference. Higher the values of all three variables, more likely it is that a person prefers aggregators.</p>
      </abstract>
      <kwd-group>
        <kwd>deal sites</kwd>
        <kwd>infomediary</kwd>
        <kwd>personality traits</kwd>
      </kwd-group>
    </article-meta>
  </front>
  <body>
    <sec id="sec-1">
      <title>Introduction</title>
      <p>launched about a decade ago. These days, probably most people think of Groupon when
talking about deal sites. Possible reasons are summarized in (Sudzina, 2016c).</p>
      <p>Within the business model framework compiled by Taran et al. (2016), Groupon can be
classified as affinity club (Johnson, 2010), round-up buyers (like Linder and Cantrell's
(2000) buying club), and trade show (like Timmers' (1998) third-party marketplace).
According to the same framework, aggregators of deal site offers are infomediaries (Rappa, 2001).</p>
      <p>The Groupon-style shopping has spread from the US to Europe and has achieved great
popularity in the Czech Republic. Deal sites are present in the Czech Republic since 2009,
they gained general popularity in 2010 with the advent of the company Slevomat. In 2011,
when the number of deal sites peaked, there were 204 registered servers (4 times more than
nowadays). Since 2015, the market cleared in the period of consolidation – it has achieved its
growth limits, the overall market turnover has stabilized. In the market, there currently
operate 45 active deal sites, top 5 of which control 90% of the market share, and the share of the
leader (slevomat.cz) alone is 40 %. Gradually, it is also possible to detect the rising share of
aggregators rather than individual deal sites. This article tries to identify the reasons behind
the increasing popularity of aggregators.</p>
      <p>The largest aggregator of deal sites offers in the Czech Republic is Skrz.cz, it was the
first infomediary of its kind in the Czech Republic, it was founded in 2010. In 2011,
Robox.cz was founded but it merged with Skrz.cz within a few months. Since 2012, Skrz.cz
also includes offers of e-shops, and since 2015, it includes also offers of travel agencies.
Other examples of Czech aggregators, which existed already in 2011 and are still active,
include Zlateslevy.cz, Slevin.cz, Slevydnes.cz, Sleviste.cz, Slevoman.cz, Modreslevy.cz,
Slevax.cz, Meslevy.cz, Ukazslevy.cz, and Slevo.cz.</p>
      <p>Aggregators for deal sites offers may be considered still a relatively new phenomenon as
they are not mentioned even in the newest version of Principles of Marketing by Kotler et al.
(2017), and also even though there is a quite good coverage of Groupon-like servers in the
academic papers, aggregators are not so well covered so far.</p>
      <p>The aim of the paper is to fill in the above mentioned knowledge gap in the field of
aggregators and investigate impact of gender and personality traits on preference to use
aggregators rather than individual deal sites.</p>
      <p>Introductory analysis of aggregators operating on the Czech market has revealed
interesting finding just by comparing their headquarters location. Vast majority of them is situated in
Prague. Similar results have been observed also by Suchacek et al. (2017) who investigated
location of Czech large enterprises. It is safe to conclude that aggregators follow the
unfortunate trend of Pragocentrism – phenomenon that large enterprises, primary because of the
proximity to decisive authorities as well as because of lower transaction costs, agglomeration
economies etc. locate their headquarters in the capital city.</p>
      <p>The rest of the paper is organized in the following way: In the next section, there is a
description what data were collected and how, and how they were analyzed. In the following
section, results of the analysis are presented. The last section offers conclusions.
2</p>
    </sec>
    <sec id="sec-2">
      <title>Data and methodology</title>
      <p>Data were collected in December 2016-January 2017 using an on-line questionnaire.
Respondents were 264 university students from the Czech Republic, of which 140 respondents
indicated that they use deal sites, and 124 do not. (From this data set, the analysis of use
versus non-use of deal sites was published in (Sudzina and Pavlicek, 2017b); the analysis of
extent of use of deal sites was published in (Sudzina and Pavlicek, 2017c); the analysis of
customer satisfaction with goods and services purchased on deal sites was published in
(Sudzina and Pavlicek, 2017a); and the analysis of use of coupons from deal sites as gift was
published in (Pavlicek and Sudzina, 2017).)</p>
      <p>SurveyXact was used for the questionnaire. Unlike Qualtrics, it does not allow to
show/hide questions based on answers to questions on the same page. Therefore, the
questionnaire was split into two pages and questions for deal sites users appeared on the second
page. Seven respondents stopped after the first page. So, the effective sample size is 133 (43
men, 90 women; on average 20 years old).</p>
      <p>Personality traits were measured using Rammstedt and John's (2007) Big Five
Inventory10, i.e. a 10-item version of the Big Five Inventory questionnaire developed by John and
Srivastava (1999), and translated to Czech by Hrebickova et al. (2016). The instruction was
to rate "How well do the following statements describe your personality" with statements "I
see myself as someone who..."
1. ... is reserved,
2. ... is generally trusting,
3. ... tends to be lazy,
4. ... is relaxed, handles stress well,
5. ... has few artistic interests,</p>
      <sec id="sec-2-1">
        <title>6. ... is outgoing, sociable,</title>
      </sec>
      <sec id="sec-2-2">
        <title>7. ... tends to find fault with others,</title>
      </sec>
      <sec id="sec-2-3">
        <title>8. ... does a thorough job,</title>
      </sec>
      <sec id="sec-2-4">
        <title>9. ... gets nervous easily,</title>
        <p>10. ... has an active imagination
on a 1-5 Likert scale where 1 meant strongly disagrees and 5 stood for strongly agree.
Extra-version was calculated as an average of the 1st (reversed-scored) and the 6th answer,
agreea-bleness as an average of the 2nd and the 7th (reversed-scored) answer,
conscientiousness as an average of the 3rd (reversed-scored) and the 8th answer, neuroticism as an average
of the 4th (reversed-scored) and the 9th answer, and openness to experience as an average of
the 5th (reversed-scored) and the 10th answer.</p>
        <p>The dependent variable was measured using the question "Do you use aggregators of
offers of deal sites (e.g. skrz.cz)? Respondents were to choose one of the following answers:
•
•
•</p>
      </sec>
      <sec id="sec-2-5">
        <title>No, I go directly to individual deal sites (coded as 1),</title>
      </sec>
      <sec id="sec-2-6">
        <title>Yes, I use mostly aggregators (coded as 3),</title>
      </sec>
      <sec id="sec-2-7">
        <title>I do not see any difference between them, I use both (coded as 2).</title>
        <p>The coding was done this way with an aim to order the three possible answers from
answers preferring individual deal sites to answers preferring aggregators. The questionnaire
contained additional questions which were not used in the analysis presented in this paper.</p>
        <p>Ordinal logisitic regression was used to analyze impact of gender and five personality
traits (extraversion, agreeableness, conscientiousness, neuroticism, openness to experience)
on preference of aggregators over individual deal sites. A multivariate approach was used.
SPSS software was used for the analysis.
3</p>
      </sec>
    </sec>
    <sec id="sec-3">
      <title>Results</title>
      <p>The research question is if/what five personality traits influence lead respondents to prefer of
aggregators over individual deal sites. Ordinal logistic regression results for the full model
are provided in Table 1. The model per se is significant, p-value = .012, Cox and Snell
pseudo R2 is .116, Nagelkerke pseudo R2 is .141, and McFadden pseudo R2 is .072.</p>
      <p>
        Conscientiousness is significant at .05 level, and agreeableness and openness to
experience are significant at .1 level.
        <xref ref-type="bibr" rid="ref2">Carlson and Wu (2012)</xref>
        suggest to exclude independent
variables that are not significant. Ordinal logistic regression results for the streamlined model are
provided in Table 2.
      </p>
      <p>
        The model per se is significant, p-value = .012, Cox and Snell pseudo R2 is .104,
Nagelkerke pseudo R2 is .126, and McFadden pseudo R2 is .064. According to
        <xref ref-type="bibr" rid="ref1">Baroudi and
Orlikowski (1989)</xref>
        , information systems researchers typically have a 40% probability of not
detecting the relationship under study, even though it, in fact, may exist. So even though
agreeableness and openness to experience have p-values slightly over .05, we prefer to keep
them in the model in order not to dismiss variables which are possibly significant. Impact of
all three variables is positive.
      </p>
      <p>Based on the results, it is possible to theoretize that high conscientiousness leads to
higher preference of aggregators because a person can be more sure that he or she is getting the
best available deal, since he or she was able to "check" multiple deal sites at the same time
this way. E.g. according to Sudzina (2016a, 2016b), agreeableness correlates with trust; so
people higher in agreeableness more likely trust any offer shown by an aggregator, so they
not feel a need to stick to one or a small number of trusted deal sites. People higher in
openness to experience may prefer aggregators because they are able to see more offers at once,
thus making it easier to find something new quickly, rather than spend time visiting
individual deal sites.
4</p>
    </sec>
    <sec id="sec-4">
      <title>Conclusion</title>
      <p>Although there is an increasing body of knowledge about deal sites, there are virtually no
studies on aggregators. The aim of the paper was to investigate influence of Big Five
Inventory personality traits on preference of aggregators over individual deal sites. With regards,
to the results, conscientiousness, agreeableness, and openness to experience impact the
preference – higher the values, more likely it is that a person prefers aggregators. Surprisingly,
gender was not found to be significant.</p>
      <p>This paper identified some factors that make us of aggregators more acceptable. These
are most likely not all the factors, some other probably exist and should be a subject of
further research, but conscientiousness, agreeableness, and openness to experience are
important factors.</p>
      <p>
        In future research, it could be investigated which aggregator(s) are used by individual
respondents, and sentiment for a particular aggregator could be also taken into consideration.
        <xref ref-type="bibr" rid="ref3">Dorcak et al. (2017)</xref>
        , although in a different industry, discovered that advanced sentiment
analysis significantly correlates with number of Twitter followers; so Twitter analysis could
be the next step in the further research. Ministr and Racek (2011) describe sentiment
evaluation of unstructured Czech text, so the analysis of tweets and social media posts would be
logical next step in further analysis.
      </p>
      <p>Hrebickova, M., Jelinek, M., Blatny, M., Brom, C., Buresova, I., Graf, S., Mejzlikova, T.,
Vazsonyi, A. T., &amp; Zabrodska, K. (2016). Big Five Inventory: Základní psychometrické
charakteristiky české verze BFI-44 a BFI-10. Ceskoslovenska Psychologie, 60(6),
567583.</p>
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and theoretical perspectives. Pervin, L. A., &amp; John, O. P. (Eds.) Handbook of personality:
Theory and research, 2nd ed. New York, NY: Guilford Press, 102-138.</p>
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