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Article

Consumers’ Preferences for Wine Attributes: A Best-Worst Scaling Analysis

Department of Law, Economics, Management and Quantitative Methods, University of Sannio, 82100 Benevento, Italy
*
Author to whom correspondence should be addressed.
Sustainability 2020, 12(7), 2819; https://doi.org/10.3390/su12072819
Submission received: 26 February 2020 / Revised: 24 March 2020 / Accepted: 31 March 2020 / Published: 2 April 2020

Abstract

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The current paper aims to explore consumers’ preferences for wine attributes related to tradition, sustainability, and innovation. A total of 419 regular wine consumers participated in an online survey that took place in Italy. Consumers’ preferences were assessed through a Best-Worst experiment with 11 wine attributes drawn from the literature. The result shows that the wine attributes, more important for consumers, are mainly related to tradition and sustainability. More specifically, the most important attributes for consumers when purchasing wine are “geographical indications”, “grape variety”, “sustainable certification”, “vintage”, and “price”. By contrast, the innovative wine attributes investigated were ranked among the least important ones, namely “canned wine”, “alcohol-free wine”, and “vegan wine”. The study findings offer several implications for wineries and marketers involved in the wine sector. They specifically provide suggestions on the wine attribute wineries should focus on to meet the current consumers’ preferences.

1. Introduction

Over the last decade, the wine industry became a highly competitive sector due to the coming of the new world wine countries (e.g., Chile, New Zealand, Argentina) on the market and the changes in consumers’ consumption habits towards different alcoholic beverages [1,2]. To address this competitive environment, wineries have to rethink their offer, adapting their business strategies and production processes. More specifically, they have to focus on consumers and their preferences to implement effective differentiation strategies. Acknowledging the role of consumers enables to embed their favourite characteristics in the product to convey a widely accepted wine on the market.
The current study goes in this direction by investigating consumers’ preferences towards several wine attributes.
Literature on consumers has widely explored their preferences towards different food products [3,4,5,6]. When it comes to wine, scholars examined consumer preferences for specific wine attributes [7]. These studies differ mainly for the types of wines considered [8,9,10,11], the countries investigated [7,12,13,14], and the wine attributes assessed [15]. As for the latter, those mainly analysed in previous studies refer mostly to traditional wine attributes (e.g., price, grape variety, vintage). To this extent, the wine attributes “previous experience”, “someone recommended it”, “the origin of the wine”, and “grape variety” arose as crucial in driving consumers’ purchasing decisions [12,16,17,18,19,20,21].
Recently, the focus is moving to the sustainability issues related to wine production [10,22,23,24]. Prior studies detected consumers’ preferences and willingness to pay for different sustainable wine attributes [1,25,26]. However, despite the growing consumer’s interest for certified sustainable wines, the lack of consumers’ awareness towards sustainability in the wine sector is noteworthy [27].
While literature largely analysed consumers’ preferences towards traditional and sustainable wine attributes, innovation in the sector was only marginally addressed. For instance, few studies uncovered consumers’ preferences for alcohol-free or low-alcohol wines [9,11,14,28], revealing a negative association in the consumer’s mind between alcohol content and product quality [11].
This study aims to fill this gap by exploring consumers’ preferences for wine attributes related to tradition, sustainability, and innovation. Further, to the best of our knowledge, it is the first study addressing-jointly-traditional, sustainable, and innovative attributes of wine.
The remainder of the paper is structured as follows: the next session outlines the questionnaire administered, the wine attributes assessed, as well as the methodology adopted in the study. Then, the outcomes are presented in the Results section. Lastly, the Discussion and Conclusion section fully discuss the study findings and draw the conclusions, while the study limitations and the need for future research are summarized in the end section of the paper.

2. Materials and Methods

2.1. Data Collection and Questionnaire

The study was carried out by interviewing a convenient sample of regular wine consumers (i.e., consumers who drink wine at least once a month) older than 18 years (the minimum legal age for drinking alcoholic beverages in Italy). Data gathering took approximately five months (from August 2019 to December 2019). Participants were invited to take part at the study through different messaging and social media platforms (e.g., email, WhatsApp, Facebook, Twitter). Specifically, a link redirecting to the online questionnaire was attached to a message introducing the aim of the study. The initial message also explicated that the questionnaire was anonymous and that all the information collected were used exclusively for the purpose of the study and in an aggregated way. Questionnaire completion lasts 15 minutes on average and no monetary incentives were provided to participants to encourage participation. Overall, 452 Italian wine consumers participated at the study, while 419 questionnaires were deemed full and used for the statistical and descriptive analysis.
The administered questionnaire consists of three sections detecting consumers’ consumption habits and preferences towards several wine attributes. In the first section, a set of seven questions were posed to detect wine habits of Italian consumers: frequency of consumption (six-points semantic scale for frequency ranging from 1 = every day to 6 = once per month), place of purchase (i.e., supermarket/hypermarket/discount, directly at the producer, wine bar, and online), and consumption (i.e., at home, at friends’ homes, restaurant, lounge bar/wine bar), consumption occasions (i.e., lunch, aperitif, dinner, after dinner, and party), expenditure on alcoholic beverages and wine in the last month (six price levels starting from below €10.00 and ending with above €50.00, with an interval of €10.00 between each level), wine purchase by price point (six price levels starting from below €5.00 and ending with above €25.00, with an interval of €5.00 between each level). The second section of the questionnaire explored consumers’ preferences for wine attributes related to tradition, sustainability, and innovation. Consumers’ preferences were assessed through a Best-Worst (B-W) experiment with 11 wine attributes drawn from the literature [10,11,12,15,17,19,21,29]. Lastly, in the end section of the questionnaire, respondents’ socio-demographics characteristics were collected (i.e., gender, age, household size, education level, occupation, and family monthly income).

2.2. Wine Attributes Investigated

The 11 wine attributes assessed in the study refer mainly to the traditional, sustainability, and innovative characteristics of wine (Table 1). Specifically, “price”, “grape variety”, “vintage”, and “geographical indications (i.e., PDO, PGI)” are among the traditional attributes considered by consumers when purchasing a bottle of wine [15]. Since an emerging body of literature uncovered the effect of sustainability on consumers’ wine preferences, four sustainable wine attributes were addressed, namely “sustainable certification (i.e., organic, VIVA sustainable wine)” [30], “lightweight glass bottle (environmentally friendly packaging)”, “bottle in 100% recycled PET”, and “environmental-friendly caps (i.e., glass, sugarcane)”. Lastly, the study uncovered the preferences of regular wine consumers towards three innovative attributes: “canned wine”, “vegan wine”, and “alcohol-free wine”.

2.3. Best-Worst Method

Consumers’ preferences for the 11 wine attributes were detected applying the Best-Worst Scaling (BWS) method. The BWS—also known as maximum difference scaling—was applied for the first time by Finn and Louviere [31] in a study on food safety. Recently, due to its advantage (i.e., it is free of bias), it was implemented in several studies on consumers’ behavior [32,33], food preferences [34], and wine marketing [12,15,17]. Indeed, compared to other rating scales, BWS does not undergo cultural bias due to respondent background [17]. Accordingly, it results in a valid and precise method for drawing up a ranking of consumers’ preferences.
In the Best-Worst Scaling method, respondents were asked to choose the most and the least important attributes, comparing a finite and different set of alternatives (choice sets). In the current study, the experimental design is based on a balanced incomplete block design (11,5,5,1) in which 11 wine attributes are assessed in 11 choice sets, with five attributes each, and with every attribute repeated five times. According to the B-W experimental design of the study, each participant expressed 11 best and 11 worst as the B-W choice sets outlined. Table 2 presents an example of the choice sets showed to participants.

3. Results

3.1. Sample Description

Table 3 illustrates the descriptive statistics of participants. Interviewees result equally distributed among gender (50% of the sample is female), and within an age range of 19 and 80 years (mean age: 38.9; ± 12.1). On average, respondents live in families consisting of three members (± 1.1) and are highly educated. As for the latter, more than a third of the sample (39.9%) hold a high school degree, while the 37.9% hold a university degree. The majority of respondents are employed (50.1% of the sample) and has a family monthly income falling into two main groups: below than €2000 (36%) and between €2001 and 4000 (31.3%).

3.2. Wine Consumption Habits

The study findings show that respondents drink wine regularly (Table 4). More than 70% of participants stated that they drink wine on regular basis during the week (13.8% every day, 9.8% 4–5 times per week, 23.4% 2–3 times per week, and 25.8% once a week). The analysis revealed that the preferred place for wine purchasing is directly at the producer (35.6% of the sample). In addition, a large part of respondents purchase wine in large retail stores (30.5%) or in wine bar (25.3%). As for the place of consumption, the majority of respondents favor to consume wine at home (51.1%), particularly at dinner time (47.7%). The last month expenditure on alcoholic beverages is about €30.00 (21.2% < €10.00, 24.1% between €10.01–20.00 and 17.7% between €20.01–30.00), with wine as the main expense. Lastly, consumers spend, between 5 and 10 euro (38.4%) on average for a 750ml bottle of wine.

3.3. Best-Worst Scaling Analysis

Consumers’ preferences for traditional, sustainable, and innovative wine attributes are obtained calculating the individual Best-Worst (B-W) score. The latter is computed by subtracting the number of times an attribute is chosen as the least important from the number of times it is chosen as the most important (Table 5). Indeed, since the study applied a balanced experimental design, the results obtained through the difference of the frequencies do not differ from those provided by running a multinomial logit model [17]. Since each attribute appeared overall five times in the 11 choice sets, the individual B-W score for the attribute is comprised in a range from +5 to −5. The total B-W score for each attribute is calculated by adding up the individual score assigned to the attribute assessed. A positive B-W score implies that the times an attribute is chosen as the most important are more than those it is selected as the least important one. The latter implies a great interest of consumers toward the attribute. By contrast, a negative score suggests that consumers’ preferences are not affected by it. In this case, the number of times an attribute is chosen as the least important exceed the times it is chosen as the most important. Table 5 presents the B-W scores of the wine attributes investigated.
The results show that five out of 11 wine attributes were valued more positively than negatively by respondents (Figure 1). The wine attributes more important for consumers are the traditional and sustainable ones as suggested by the positive B-W scores. As for the former (traditional), the attributes with a higher score are “geographical indications” (0.523), “grape variety” (0.385), “vintage” (0.100), and “price” (0.057), while the sustainable attribute is “sustainable certification” (0.211). Rather, the wine attributes related to innovation such as “vegan wine” (−0.212), “alcohol-free wine” (−0.372), and “canned wine” (−0.431) were ranked as less important by consumers when purchasing a bottle of wine.
Lastly, a paired-samples t-test was performed across all pairs of wine attributes to evaluate if the means of the ranked attributes were statistically significant different (Table 6). Few pairs of attributes are significantly different as shown by a p-value higher than 0.05. The difference in the attributes is not equal to zero between “price”, “lightweight glass bottle (environmentally friendly packaging)”, and “bottle in 100% recycled PET” as well as between “vintage” and “price”.

4. Discussion and Conclusion

For the first time, the current study investigates consumers’ preferences for 11 wine attributes related to tradition, sustainability, and innovation. The main aim of the study is to go beyond the limitation occurring in previous studies which focus mostly on traditional or sustainable characteristics of wine. By detecting consumers’ preferences, wineries may rethink their strategies and product offer relying on the wine attributes most appealing to consumers.
To address the study aim, a web-based structured questionnaire was administered to regular Italian wine consumers.
The study findings show that the regular wine consumer in Italy is, on average, 39-years old, well-educated and employed, and lives in a family with a monthly income of up to €4000. As for the purchasing habits, respondents stated to purchase wine directly at the producer. This behaviour suggests that on one hand, the preference of consumers towards local food product characterized by high social benefits [35,36,37,38], whilst on the other hand, their willingness to support the economic growth of local community [39,40]. Further, the study uncovered that consumers spend roughly €10.00 per a bottle of wine and up to €20.00 in wine monthly. These results are in accordance with those observed by Lerro et al. [8] investigating consumers’ expenditure on sparkling wines and revealing a spending up to €20.00 for a bottle of wine. The current study also unveiled that participants mainly consume wine weekly, at home and at dinner time. These consumption habits are in line with previous studies carried out in different countries [7,15].
As shown by the Best-Worst experiment, Italian consumers assign a positive evaluation to traditional wine attributes, ranking “geographical indications (i.e., PDO, PGI)”, “grape variety”, “vintage”, and “price” as the most important ones. As for the former (geographical indications), the importance attached to this attribute differs between countries. For instance, Italian consumers pay great attention to wine geographical indications. Indeed, the strict agricultural and oenological practices considered in the PDO and PGI regulations can affect consumer quality perception of wine [41]. Geographical indications are crucial for Portuguese consumers as well [7], while in the US, they seem to be unimportant in driving consumers’ purchasing decisions [15]. Grape variety also appears important to consumers. It is in accordance with previous results [7,12,15,17] and may be affected by past experience with the product or by a specific preference towards the vine [21]. Likewise, the attribute “vintage” that Schäufele and Hamm [27] identified as a sign of wine quality considered by consumers along with “region of origin” and “wine producers”. Price was also positively assessed by consumers, however its effect seems limited compared to the other. Prior research is consistent with this finding, arguing that “price” may result less important for consumers when it is assessed together with other product characteristics [7,42,43].
Regarding the sustainable and innovative wine attributes, the study uncovered the effects only of the “sustainable certification (i.e., organic, VIVA sustainable wine)”. Schmit et al. [44] pointed out that eco-labelled wines are more preferred by consumers who are also willing to pay more for these wines. However, in a recent study, Sogari et al. [1] revealed that if, on one hand, the eco-label may drive consumers’ decisions, on the other hand, consumers are unwilling to trade it for the product quality and price. Lastly, the innovative wine attributes investigated in the study obtained negative evaluations by consumers who place them among the last positions in terms of preferences. The latter may likely be due to the unwillingness of Italian consumers towards innovation in a traditional product. Indeed, traditional attribute may be perceived by consumers as a sign of quality strongly tied with the typicality of the product. Accordingly, either product or process innovations might negatively affect consumers’ evaluation and purchasing decisions.
The study findings offer several implications for wineries and marketers involved in the wine sector. Considering the place of purchase preferred by consumers (i.e., directly at the producer), wineries should strengthen this sale channel. The latter may turn into an opportunity for wineries to promote not only their product offer but also the territory and the local tradition. Taking into account consumers’ consumption habits, such as at home and at dinner time, marketers may advertise the product displaying people in an informal and relaxing environment. Further, since the wine is consumed mainly at dinner time, wineries may offer suggestions to pair wine and food to facilitate consumer in their choices. Based on the wine attributes most preferred by consumers when purchasing wine, producers should focus undoubtedly on quality productions. Geographical indications, in fact, are perceived as synonymous of product quality that improve when the regulation underlying the certification become stricter [41]. Since geographical indication regulations link the wine to a territory, they ensure about the traceability of grapes and the uniqueness of the product. The latter are mainly due to the strict agricultural and oenological practices considered in the PDO and PGI regulations. In addition, given the interest shown by consumers towards the sustainable certifications, wineries should make an effort to decrease their impact in the production process as well as certify their production. Lastly, the ineffectiveness of the innovative attributes in driving consumers’ preferences suggests that wineries should rely mainly on typicality and quality production to differentiate their product offer.

5. Limitations and Further Research

Few limitations occurring in the study limit the generalization of these findings. Indeed, the results observed are not representative of the preferences of Italian wine consumers due to the sampling method adopted and the limited number of participants. Accordingly, future studies may, on one hand, widen the sample to increase its representativeness or, on the other hand, focus on specific consumer segment identified on the basis of consumers’ sociodemographic and psychographic characteristics. A further limitation of the study resides in the selection of the wine attributes investigated as well as in the frame of some of them. Lastly, the hypothetical nature of the study and the scenario outlined in the B-W experiment (i.e., grocery store) may also have affected consumers’ preferences for some wine attributes (e.g., price). As a consequence, future research may replicate the study with a different frame or implement an incentive compatible mechanism to detect consumers’ preferences.

Author Contributions

Introduction, M.L.; Material and Methods and Results, M.S.; Discussion and conclusion and Limitations and further research, G.M. All authors have read and approved the final manuscript.

Funding

This research received no external funding.

Conflicts of Interest

The authors declare no conflict of interest.

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Figure 1. B-W average scores of wine attributes affecting consumers’ preferences.
Figure 1. B-W average scores of wine attributes affecting consumers’ preferences.
Sustainability 12 02819 g001
Table 1. The wine attributes assessed in the study.
Table 1. The wine attributes assessed in the study.
Attributes NumberAttributes
1Price
2Grape variety
3Vintage
4Geographical indications (i.e., PDO, PGI)
5Sustainable certification (i.e., organic, VIVA sustainable wine)
6Lightweight glass bottle (environmentally friendly packaging)
7Bottle in 100% recycled PET
8Environmental-friendly caps (i.e., glass, sugarcane)
9Canned wine
10Vegan wine
11Alcohol-free wine
Table 2. Example of a B-W choice set presented to respondents.
Table 2. Example of a B-W choice set presented to respondents.
Imagine you are at your usual grocery store, which of these attributes do you think are the most important and least important when purchasing wine (choose only one as most important and one as least important)?
Most important Least important
Price
Vegan wine
Vintage
Alcohol-free wine
Geographical indications (i.e., PDO, PGI)
Table 3. Sample descriptive statistics (N = 419).
Table 3. Sample descriptive statistics (N = 419).
Variable name and descriptionMeanFrequencyStandard
Deviation
MinMax
Gender (1 if Female)0.501 N/A01
Respondent’s age38.998 12.1571980
Household size3.446 1.12617
Education level classes3.659 0.81915
Primary school0%
Secondary school5.5%
High school39.9%
University degree37.9%
Above university degree16.7%
Occupation status2.196 1.59416
Employed50.1%
Self-employed23.6%
Housewife/Husband5.0%
Retired2.1%
Student16.0%
Unemployed3.1%
Family monthly income classes2.365 1.45515
< €200036.0%
€2001–€400031.3%
€4001–€600011.0%
€6001–€80003.6%
> €800018.1%
Table 4. Respondents’ wine consumption habits.
Table 4. Respondents’ wine consumption habits.
Variable Name and DescriptionFrequency
Wine consumption frequency
Every day13.8%
4–5 times per week9.8%
2–3 times per week23.4%
Once a week25.8%
2–3 times per month11.9%
Once a month15.3%
Favorite wine place of purchase
Supermarket, Hypermarket, discount30.5%
Directly at the producer35.6%
Wine bar25.3%
Online1.7%
Others6.9%
Favorite wine place of consumption
At home51.1%
At friends’ home17.4%
Restaurant18.9%
Lounge bar/Wine bar12.6%
Favorite wine consumption occasion
Lunch24.6%
Aperitif7.2%
Dinner47.7%
After dinner5.7%
Party14.3%
Others0.5%
Expenditure on alcoholic beverage in the last month
< €10.0021.2%
between €10.01–20.0024.1%
between €20.01–30.0017.7%
between €30.01–40.0013.6%
between €40.01–50.008.1%
> €50.0115.3%
Expenditure on wine in the last month
< €10.0030.1%
between €10.01–20.0030.1%
between €20.01–30.0015.0%
between €30.01–40.0011.7%
between €40.01–50.004.1%
> €50.019.1%
Wine purchase by price point
< €5.0030.1%
between €5.01–10.0038.4%
between €10.01–15.0020.0%
between €15.01–20.005.5%
between €20.01–25.002.9%
> €25.013.1%
Table 5. Respondents’ preferences for the eleven wine attributes (ranked by B-W score).
Table 5. Respondents’ preferences for the eleven wine attributes (ranked by B-W score).
AttributesTotal BestTotal WorstB-W Score
4Geographical indications (i.e., PDO, PGI)1148−511097
2Grape variety904−97807
5Sustainable certification (i.e., organic, VIVA sustainable wine)548−105443
3Vintage429−219210
1Price495−374121
6Lightweight glass bottle (environmentally friendly packaging)230−236−6
7Bottle in 100% recycled PET185−246−61
8Environmental-friendly caps (i.e., glass, sugarcane)135−282−147
9Canned wine30−475−445
11Alcohol-free wine42−822−780
10Vegan wine32−935−903
Table 6. Mean comparison of the wine attributes for respondents.
Table 6. Mean comparison of the wine attributes for respondents.
AttributesAverageB-W ScoreMean-Comparison*
4Geographical indications (i.e., PDO, PGI)0.523
2Grape variety0.385
5Sustainable certification (i.e., organic, VIVA sustainable wine)0.211
3Vintage0.100 X
1Price0.057XX
6Lightweight glass bottle (environmentally friendly packaging)−0.002X
7Bottle in 100% recycled PET−0.029X
8Environmental-friendly caps (i.e., glass, sugarcane)−0.07
9Canned wine−0.212
11Alcohol-free wine−0.372
10Vegan wine−0.431
* t-test p < 0.05; wine attributes with Xs in the same column or row are not significantly different.

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Stanco, M.; Lerro, M.; Marotta, G. Consumers’ Preferences for Wine Attributes: A Best-Worst Scaling Analysis. Sustainability 2020, 12, 2819. https://doi.org/10.3390/su12072819

AMA Style

Stanco M, Lerro M, Marotta G. Consumers’ Preferences for Wine Attributes: A Best-Worst Scaling Analysis. Sustainability. 2020; 12(7):2819. https://doi.org/10.3390/su12072819

Chicago/Turabian Style

Stanco, Marcello, Marco Lerro, and Giuseppe Marotta. 2020. "Consumers’ Preferences for Wine Attributes: A Best-Worst Scaling Analysis" Sustainability 12, no. 7: 2819. https://doi.org/10.3390/su12072819

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