| Keywords | 
        
            | Information and communication technologies; Market segmentation;       Online consumer behaviour; Internet. | 
        
            | INTRODUCTION | 
        
            | Organizations and society have been modified on the basis of the emergence of new       information and communication technologies (ICT). The Internet falls within the concept       of revolutionary technology, allowing communication almost without frontiers, beyond the       possibility of a broad search for information. Among the new possibilities brought about       through websites, electronic commerce, or e-commerce stands out. It refers to the       marketing relationship over the Internet. | 
        
            | E-commerce can be characterized by the use of an online means to sell, buy and       exchange goods or services. It consists of a system that facilitates and enables the       realization of transactions between consumers and businesses (Kotler & Keller, 2006;       Franco Junior, 2005; Turban & King, 2004). | 
        
            | E-commerce was made possible with the emergence and mainly with the popularization       of the Internet, which initially had only use for financial, academic and governmental       institutions. From 1990, according to Limeira (2005), a facilitating factor in the use of the       Internet for commercial purposes occurred due to the emergence of providers,       equipment and connections that made access to this technology easier. | 
        
            | Trade carried out with the use of the Internet involves more than buying and selling.       Hooley, Saunders and Piercy (2005) suggest that the e-commerce encompasses       facilitating tools for buying and steps present in pre and post-sales processes. For the       proper functioning of this type of transaction, companies need to be attentive to the       needs of consumers, with the goal of making disclosures effectively and deliver products       correctly within the deadline stipulated, among other activities that permeate the       relationship between consumer and company for this type of purchasing process. | 
        
            | The popularization of e-commerce and innovations generated by information and       communication technologies cause impacts on behaviours, habits and expectations of       consumers about the products and services that they will demand. These tools allow       situations like making purchases at any time, and ease of purchase in stores       geographically distant. With the use of the advantages generated by this mode of trade,       companies can stand out from their competitors and meet satisfactorily consumers       needs, who are increasingly informed and demanding with regard to their desires       (Botelho, Gomes, & Silva, 2011; Martins, Stolt, & Freire, 2010). | 
        
            | Several authors (Nascimento, 2011; Farias, Kovacs, & Silva, 2008; Limeira, 2005) show       the difference between e-commerce and conventional trade, caused by different       characteristics between the physical world and the virtual world. Among the differences,       it can be mentioned: rapid interactivity between company and customer; need for trust       between the parties to solve difficulties –as the impossibility of testing the product–; the       possibility of shopping in other regions or even other countries; concern about the design       of the website, which becomes a sort of company's online environment. | 
        
            | The profile of buyers is no longer the same and the Internet provides them with greater       agility in shopping, comfort and access to various products and shops, price comparison       and other advantages. Blackwell, Engel and Miniard (2005) affirm that consumption       growth through e-commerce can bring changes comparable to those caused by the industrial revolution, as, for example, transformations in the consumer lifestyle and       greater ease of access to consumption. Therefore, marketing professionals must be       aware of the factors that hinder making purchases by traditional method and/or make       purchases performed over the Internet more attractive. | 
        
            | A research carried out by TIC Domicílios e Empresas (2011) (Brazilian center of studies       on information and communication technologies) points out that 41% of Brazilians use       the Internet, number higher than 36% recorded in 2009. It is also observed that users       with basic education rose from 36% in 2009 to 43% in 2010. The results show that in       2010 only 7% of the population with basic education used financial services (banking) on       the Internet, while among those with higher education this number rose to 31%. | 
        
            | According to the WebShoppers (E-BIT, 2011) half-yearly report, only during the first half       of 2011, 4.8 billion Canadian dollars were invoiced in online sales of consumer goods in       Brazil, revealing an increase of 24% compared to the revenue reached in the same       period of the previous year. Also according to the report, of the total volume of orders       placed, 13% was related to households, 12% to computer products and 11% to health,       beauty and medicines. This seems to show that e-commerce is going through a period       of maturation and has greater acceptance among people who buy different types of       products. | 
        
            | However, it should be noted that not all people are willing to purchase goods or services       online, either because they do not believe in the advantages of this type of transaction or       because they distrust its security. According to Bessa, Nery and Terci (2003), making       purchases over the Internet requires greater consumer confidence in the company from       which they are buying. Therefore, it becomes increasingly important to identify       consumers willing to make their purchases over websites as well as their wishes and       needs. | 
        
            | E-commerce still needs to overcome many obstacles in order to consolidate as a       purchasing alternative for all groups of people. In Brazil, "FRadar" research carried out       by FNazca (2010) with 2.247 people in 143 municipalities, shows that 33% of those       people did not make their purchases over the Internet for fear that their orders could not       be delivered or that the deadline would not be met, 28% did not make purchases       because they did not have contact with the product, and 23% for fear that their data       could be used for malicious purposes by others. | 
        
            | The company, before adopting this method of marketing, has to assess the strengths       and weaknesses which deserve greater attention, in order to adapt its operation and       marketing strategies, because it is relatively new technology, even though on the rise.       Ten years ago, Porter (2001) stated that successful companies should use the Internet       together with the traditional way of competition, as this technology was important for       setting organizational strategies. | 
        
            | With the advancement of information and communication technologies (ICT) and the       development of tools that improves activities such as e-commerce, Kotler and Keller       (2006) suggest that companies should worry about better understanding consumers, as       they currently obtain information with ease and thus become more demanding. | 
        
            | Studies on consumer behaviour should be carried out frequently, because consumers       change their perceptions, needs and wishes in relation to the environment. In fact,       Nascimento (2011) states that topics related to the Internet tend to become obsolete in       the light of rapid technological change. The literature offers several studies about the       behaviour of e-commerce customers, as the example of researches conducted by       Martins et al. (2010) and Costa (2009) in Brazil, Eid (2011) in Saudi Arabia, and Sin and       Purnamasari (2011) in China. | 
        
            | This study aims to analyze the profile of e-commerce customers. Specifically, it intends       to: a) Check which socio-demographic variables influence the purchasing behaviour of       costumers and non-customers; b) Identify the differences in the behaviour of the       customers and non-customers; and c) Identify segments of current and potential       customers. | 
        
            | METHODOLOGY | 
        
            | A quantitative-descriptive study was carried out, using a structured questionnaire, as       suggested by Malhotra (2009). The sampling technique adopted was non-probabilistic       for convenience. The study was conducted with 117 students of a federal public       university in the south-western region of Brazil. It was performed during class hours and       with the permission of teachers, in the first half of 2011. The research included       customers and non-customers of e-commerce. | 
        
            | The questionnaire was divided into two parts. The first included 14 statements about the       consumption profile (Chart 1) with the goal of not only characterize the respondents, but       to identify differences in preferences of consumers and non-consumers of e-commerce.       This group of variables was measured by adopting Likert’s scale of 5 points, ranging       from 1 (strongly disagree) to 5 (strongly agree). The second part of the questionnaire       consisted of a group of socio-demographic variables. | 
        
            | From 117 questionnaires applied, 17 contained several unanswered questions and,       therefore, had to be excluded from the final sample. Thus, 100 questionnaires were       considered valid, including students of undergraduate courses in Business       Administration (14,53%), Economics (35.04%), Pharmacy (19.66%), Pedagogy (19,66%)       and Chemistry (11,11%). | 
        
            | The analysis of the data was divided into two stages and carried out with the aid of       Minitab software (Minitab, 2010). The first aimed to identify the socio-demographic and       consumption preferences characteristics, which differentiate consumers and nonconsumers       of e-commerce. In this way, in order to analyze the influence of sociodemographic       characteristics in this type of consumption, bivariate analyses were carried       out with descriptive statistics and cross-sectional analysis using Chi-square test with a       significance level of 0,05. | 
        
            | Still, in the first step, in order to verify the most characteristic consumption behaviour of       consumers of e-commerce, a binary logistic regression was held using the 14       statements contained in Chart 1 as explanatory variables. This multivariate technique is       used to analyze the behaviour between a categorical dependent variable –in this case,       whether purchases are made over the Internet or not– and independent metric variables (Chart 1), so that, subsequently, predict the probability of a respondent belong to a       particular group, as suggested by Fávero, Belfiore, Silva and Chan (2009). More than       being a method of prediction, this tool allows identifying which factors and to what extent       they influence the variable explained. | 
        
            | In the second step of the analysis, the aim was to identify actual and potential consumer       segments. For this purpose, an agglomerative hierarchical clustering analysis (Hair,       Black, Babin, Anderson, & Tatham, 2009) was carried out by using the 14 variables       related to consumption preferences (Chart 1). This method of analysis aims to form       segments which have internal homogeneity (among the members of the segment) and       external heterogeneity (among segments). It starts with a segment for each respondent       –in this case 100 segments– and then, seeking to minimize the internal variation of the       groups formed, it groups the closest in order to form a single segment (Hair et al., 2009). | 
        
            | To select the optimum amount of segments, the percentage change in the agglomerative       coefficients was observed, which indicate precisely the heterogeneity within the       segments, along with the performing of a graphical analysis of the results (Hair et al.,       2009). After selecting the amount of segments, their identification was performed by       analyzing their consumption behaviours and their crossing with socio-demographic       variables contained in the questionnaire. | 
        
            | RESULTS AND DISCUSSION | 
        
            | Sample profile | 
        
            | Table 1 presents the socio-demographic data of the sample studied, as well as       information about purchasing behaviour. It is interesting to note that the vast majority of       students had already made their purchases over the Internet (75,26%). This value is higher than values shown in other studies (Botelho et al., 2011; Macedo, Matos, Rigoni,       & Betim, 2010; Costa, 2009), also performed with undergraduate students, in which the       numbers were close to 65%. | 
        
            | The most important factors influencing the purchasing decision of consumers are       security (50,68%) and price (31,51%), what corroborate similar studies (Macedo et al.,       2010; Crespo & Bosque, 2010; Zo & Ramamurthy, 2009; Renzi, Santos, & Freitas, 2008;       Silveira, Muller, Silva, Freitas, & Costa, 2008), even though price has been considered       the most important factor in some of them. | 
        
            | Characteristics of e-commerce users | 
        
            | To find out whether socio-demographic variables influence the consumption over the       Internet and whether it would be possible, by means of these variables, identify the       consumer of e-commerce, data were related to the fact that the respondents had already       made their purchases over the Internet. Relations were evaluated by using the Chisquare       test. | 
        
            | When analyzing gender, it is observed that for the group of buyers the division is nearly       50%, but in the group of non-buyers the number of women grows to nearly 80%, i.e.       men use this form of consumption more than women. Similar results were found in a       study with students and teachers of higher education institutions located in the       metropolitan region of Belo Horizonte, state of Minas Gerais, Brazil (Costa, 2009), in       which, among men, 30,8% stated they did not buy over the Internet, while among       women that number rose to 36,9%. | 
        
            | In relation to the family income, most buyers fits in the category of 4 to 10 basic       minimum salaries (38,36%), while most non-buyers received between 1 and 3 basic       minimum salaries (41,67 %). This relationship between higher income and consumption       over the Internet has also been identified in other similar researches (Sin and       Purnamasari, 2011; Nascimento, 2011; Costa, 2009; Limeira, 2005). | 
        
            | Regarding purchasing by credit card, around 76% of buyers stated that they used this       tool to make their purchases, while only 54,17% of non-buyers used it. This difference       may be related to the fact that most purchases made over the Internet are paid by credit       card, possibly by the convenience of payment and because transactions are made more       quickly (Macedo et al., 2010; Azevedo & Gomes, 2008; Silveira et al., 2008). | 
        
            | This is also possibly due to the increasing consumer confidence with regard to the       quality of the products and, above all, the security of the data. Several studies (Martins       et al., 2010; Teo & Liu, 2007; Chen & Dhillon, 2003; Corbitt, Thanasankit, & Yi, 2003)       show that purchases over the Internet are still regarded with a certain degree of risk and       poorly reliable, especially when it is necessary to enter bank details or credit card       numbers. But, according to Azevedo and Gomes (2008), this reality has been changing       over the years. | 
        
            | To assess whether there are significant differences between the consumption       preferences of buyers and non-buyers, a binary logistic regression was conducted. With       this technique it was intended to find out which variables allowed differentiating ecommerce       consumers from non-consumers, i.e., what characteristics are the most       striking within this market segment (buyers). | 
        
            | Initially, the adjusted model had issues related to consumption preferences (1 to 14) as       explanatory variables, but when performing the test of significance, the only variables       that indicated coefficients significantly different from zero (p-value inferior or equal to       0,05) were: "I make purchases quickly and practically" (Q1), "I like to take risks" (Q4),       and “I like to see or test what I intend to purchase" (Q10), i.e., according to the collected       data, these three variables were the only ones able to differentiate consumers. | 
        
            | Table 2 presents the adjusted model. As it can see in the table, all p-values are inferior to 0,05, i.e., there is no evidence that the estimated coefficients are equal to zero; in       addition, the G test, which tests the null hypothesis that all coefficients associated with       the independent variables are equal to zero, also featured a p-value inferior to 0,05,       leaving no evidence that any coefficient was zero. | 
        
            | Odds Ratio values indicate the weight of each variable in the model, because they       demonstrate how much an increase in an independent variable, holding everything plus       constants, influences the probability of the event to occur. Therefore, it is concluded that       the convenience factor is the most important in this case. | 
        
            | The positive value of the estimated coefficient for "I make purchases quickly and       practically" (Q1) indicates that any increase in the score given to this item makes the       respondent more prone to belong to the group of online consumers. Thus, e-commerce       buyers prefer to make purchases quickly and in a practical way and believe that the       Internet is a tool that enables this procedure. | 
        
            | The practicality and ease of purchasing over the Internet are determining factors for the       use of e-commerce. Several studies (Nascimento, 2011; Crespo & Bosque, 2010;       Macedo et al., 2010; Cruz, Costa, Santos, Vital, & Rosário, 2008; Silveira et al., 2008;       Arroyo, Camargo Júnior, Merlo, & Scandiuzzi, 2006) found that these items are       important to these consumers, being among the major factors in the decision. Websites       that do not offer quick and practical environments are at a disadvantage and may even       repel this type of clients, such as affirmed by Caro (2005) and Liu and Wei (2003). | 
        
            | With the variables "I like taking risks" and "I like to see or test what I want to purchase"       the inverse occurs, since their coefficients are negative. In other words, according to the       assertions of the respondents, buyers would be less willing to take risks and do not       make a point of testing what they are purchasing. In relation to testing the products, this       relationship seems logical, because even though a few websites show several images       and detailed information of the products available and they even offer the possibility of       browsing a book before buying it, there is no way to test the products more effectively,       especially in comparison with purchases made in a physical store. | 
        
            | The little willingness to take risks, according to results found in the present study, is an       interesting fact, since usually these consumers are classified as less averse to risks       (Crespo & Bosque, 2010; Costa, 2009). In addition, several works (Martins et al., 2010 Cruz et al., 2008; Teo & Liu, 2007; Liu & Wei, 2003; Corbitt et al., 2003) relate       purchases made over the Internet to higher risks as a function of the fact occurring at       distance, fear of having data stolen, or even being the victim of fraud. | 
        
            | Based on the adjusted equation, a test comparing the real answers obtained in the       questionnaires with the answers provided by the model was carried out. The model was       right in 80,4% of times, demonstrating that if only these three variables were used, it is       possible to reach a high level of precision, showing once again how relevant this model       proved to be. | 
        
            | Customer segmentation | 
        
            | In order to verify the possible existence of different segments among the respondents, it       was decided to perform an agglomerative hierarchical clustering analysis (Hair et al.,       2009), using the 14 variables related to consumer preferences. Once the analysis was       performed, the coefficients of agglomeration, which indicate the degree of homogeneity       of the segments formed, along with the graphical analysis of the results, suggested that       the amount of segments should be four (clusters). | 
        
            | When examining the possibility of segmentation among buyers of CDs over the Internet,       Granuzzo (2001) also found four clusters on the interests and buying behaviour. The       research conducted by Arroyo et al. (2006) with undergraduate and graduate students,       with the goal of identifying e-commerce consumer preferences, identified three clusters. | 
        
            | After selecting the amount of segments, it is necessary to identify them. To that end, the       averages of scores allocated to each segment were analyzed (Table 3). Subsequently,       in the search for better understanding of each segment, they were crossed with sociodemographic       variables contained in the questionnaire and the relationship of       dependency was evaluated by using the Chi-square test. | 
        
            | Segment 1 (controlled) represents 27,86% of the sample and consists of 55,56% of       men. Most of them were young with up to 24 years of age (74,07%). 42,11% of this       cluster had family income between 4 and 10 basic minimum salaries and most of them       made their purchases up to once a month (66,67%). Most individuals of this segment       made purchases paying in cash (77,78%) and among the four consumer groups       identified in this study, this is which less used the credit card (59%). This is the cluster       that contains more individuals who had already made purchases over the Internet,       reaching 92,59%. | 
        
            | In relation to consumer preferences, this segment was not identified with making       purchases on impulse nor relates the act of making purchases as an act of pleasure.       They looked forward to having security when making purchases, buying only what they       were planning and they liked to use the Internet because they did not have to deal with a       salesperson and because of the convenience of making purchases without leaving       home. The group showed to be indifferent about having anyone aiding in the time of       purchase and, following the example of clusters 2 and 4, segment 1 gave more value to       quality than price. In the case of the three variables identified in the logistic regression as       discriminating for online consumers, this cluster assigned scores above average to "I       make purchases quickly and practically", followed by "I like to see or test what I intend to       purchase" (the second lowest average) and "I like to take risks" (low score). | 
        
            | Segment 2 (Young consumers) corresponds to 47,42% of the sample. It is composed by       54,35% of women and is the youngest, in which 93,48% of the individuals was up to 24       years of age. 41,03% of individuals in this cluster had a family income between 4 and 10       basic minimum salaries. Most of them made purchases two to four times a month       (45,65%), and this segment was the one that made most of the purchases in cash       (91,39%). 71,79% used credit card and 76,09% had already made purchases over the       Internet. | 
        
            | Regarding preferences of consumers, individuals of this segment liked making       purchases without leaving home and looked forward to having security at the time of       making purchases. They were attracted by novelties and felt pleasure when making       purchases. The segment showed indifference about having anyone aiding at the time of       making purchases and, as clusters1 and 4, this segment also gave more value to quality       than price. In the case of the three discriminating variables, this group assigned a high       score to "I make purchases quickly and practically", the second higher score to "I like to       see or test what I intend to purchase" and a low score to "I like to take risks". | 
        
            | Segment 3 (Basic consumer) includes 11,34% of the sample. It is composed of 63,64%       of women and is the oldest, with 54,55% of the individuals being over 24 years of age.       This group had the lowest income with 45,45% of the individuals earning up to 3 basic       minimum salaries and most of them made purchases up to once a month (72,77%). | 
        
            | Most individuals of this segment made their purchases by paying in cash (72,77%) and       81.82% used credit card. In this cluster, 72,73% had already made purchases over the       Internet. | 
        
            | In relation to consumer preferences, this segment saw no advantage in not having to       deal with a salesperson. It was the only cluster to prefer the price at the expense of       quality and showed to be indifferent to most variables. In the case of the three       discriminating variables, this group gave high scores to making purchases quickly and       practically and taking risks. The lowest score was given to testing before making       purchases. | 
        
            | Segment 4 (Conventional buyers) comprises 13.40% of the sample and was composed       of 84,62% of women. The majority were young women, up to 24 years of age (84,62%).       This cluster was the one with the biggest incomes; 45,45% earned between 10 and 20       basic minimum salaries. The individuals of this cluster made their purchases more       frequently, since the majority (61%) made their purchases more than twice a month.       Most individuals of this segment made their purchases by paying in cash (61,64%). On       the other hand, in relation to the other three segments, most instalment purchases were       made by this segment (38,46%). Credit cards were used by 84,62% of members of this       segment and this was the cluster that contained more people who had never made       purchases over the Internet (61,54%). In relation to consumption preferences, this       segment did not see advantages in making purchases without leaving home and either       not having to deal with a salesperson. These individuals looked forward to having       security when making purchases and preferred to have someone helping them at that       time. They made purchases on impulse, were attracted by novelties and considered       making purchases as a pleasure. As clusters 1 and 2, segment 4 gave more value to       quality than price. In the case of the three discriminating variables, this group assigned       low scores to making purchases quickly and practically and taking risks. They assigned       the highest score to testing before making purchases. | 
        
            | CONCLUSION | 
        
            | This study aimed to analyze the profile of e-commerce users. To this end, a descriptivequantitative       study was conducted with 117 undergraduate students at the Federal       University of Mato Grosso do Sul, in the city of Campo Grande, state of Mato Grosso do       Sul, Brazil, during the first half of 2011, using a non-probabilistic sampling technique for       convenience. Data analysis was performed by means of descriptive statistics and tests,       in addition to the techniques of binary logistic regression and cluster analysis. | 
        
            | The results showed that more than 75% of the students had already made purchases       over the Internet and that security and price were major factors in their decisions. Men       used e-commerce more than women and that kind of consumption is positively related to       incomes and the use of credit cards. | 
        
            | In addition, according to the results of logistic regression, it was found that the       consumption preferences, able to differentiate consumers of e-commerce, were: making       purchases quickly and practically, risk perception and indifference to testing the products       before making purchases. Still, four different clusters were identified in relation to       preferences and socio-demographic characteristics: controlled (27,86%), young consumers (47,42%), basic consumer (11,34%) and conventional buyers (13,40%). | 
        
            | The purchase of goods and services over the Internet has unique characteristics that       make it different from traditional purchasing in physical stores. Therefore, companies       must consider websites as a new business or an expansion of their business today.       Accordingly, this work brings important contributions to companies about real and       potential e-commerce customers, enabling to know and satisfy them. | 
        
            | A key issue in which companies should concentrate refers to security perceived by       consumers at the time of the transaction on the website. In this study and other recent       specific studies on the topic (Bao, Li, Meng, Liu, & Wang, 2011; Beatty, Reay, Dick, &       Miller, 2011; Eid, 2011) this fact became clear. In the words of Nascimento (2011), the       acquisition of more followers to the e-commerce depends on the ease of access to       websites and the elimination of "fear of the unknown". | 
        
            | For the academics, this research joins efforts to studies of segmentation and behaviour       of e-commerce consumers in Brazil, especially in a group of high interest constituted by       university students. | 
        
            | The subjects of the study (i.e., university students), the sample size (100 interviews) and       the fact that this research was carried out in only one city (Campo Grande – MS) are not       representative elements of the Brazilian population, so it is possible to recognize a       limitation in this research. | 
        
            | Finally, as a suggestion for future work, it would be advisable to conduct studies on the       expansion of e-commerce considering mobile devices for Internet access (mobile       phones and tablets), the e-commerce as a competitive advantage and the impact of the       new taxation on Internet sales, as well as carrying out a broader research with the       application of a higher number of questionnaires to individuals who possess more       discrepant socioeconomic characteristics. | 
        
            | Tables at a glance | 
        
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            | Figures at a glance | 
        
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                        | Figure 1 |  | 
        
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            | References | 
        
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