Analysis of Food Purchasing Behavior and Sustainable Consumption in the North-East Region of Romania: A PLS-SEM Approach
Abstract
:1. Introduction
2. Literature Review
2.1. Perception of Sustainable Behavior
2.2. Factors Affecting Consumers’ Sustainable Behavior
- The impact of social and cultural factors on nutrition
- Macro influences on consumer behavior:
- 2.
- Micro influences on consumer behavior:
2.3. Incorporating the Theory of Planned Behavior (TPB) and the Value-Belief-Norm (VBN) into the Analysis of Sustainable Purchasing Decisions
2.4. PLS-SEM in Analyzing Sustainable Purchasing Decisions
3. Hypotheses Development
4. Research Hypotheses
- -
- Social and cultural factors: This is a mediating variable in the model and is measured using items q11a–q11f from the questionnaire.
- -
- Promotional factors: This is another mediating variable in the model and is measured using items q28a–q28g from the questionnaire.
Descriptive Analysis
“When choosing to buy a product from the following categories (fruits, vegetables, meat and meat products, dairy products, bread, and bakery products), what factors influence your decision?”
- I.
- Socio-cultural factors (Mediating variable)
“To what extent do culture, social environment, and education influence your decision to buy agro-food products?”
- II.
- Promotional factors (Mediating variable)
“Do you believe that product promotion influences your purchasing decision? Consider the impact of various promotional tactics, such as advertising, public relations, and other communication strategies, in shaping your perception of the product and your final purchase decision”.
- Previous Preferences: These purchases typically involve low risk due to habit and prior experience with a product. This factor is particularly significant in routine purchases, such as buying food or household care products.
- Information from marketers: This purchasing decision factor generally applies to durable goods and can be easily controlled through marketing campaigns. It is also used to persuade customers to switch from familiar brands and try something new.
- Contributions from other people: This third factor is facilitated by the transmission of information through social media and the general influence of the online environment. Potential consumers seek online reviews when making significant purchases, such as mobile phones or household appliances. They want to ensure that the products they buy offer high reliability, quality, and functionality, and they invest time in gathering this information.
- III.
- The consumption decision for healthy products (Dependent variable)
- I will continue to buy as many natural products as possible from local producers.
- I am willing to try new healthy products.
- I intend to increase the share of natural products in my personal consumption.
- Allocating a larger budget for healthier products is a wise decision.
5. Materials and Methods
5.1. Analysis Methods Used
5.2. Optimizing Consumer Decisions on Agri-Food Products Using Smart-PLS 4.0: Advanced Modeling and Analysis Techniques
5.3. Application of PLS-SEM in Sustainable Food Purchasing Behavior
- Data Collection: data are gathered using structured questionnaires, often employing Likert scales (e.g., “strongly disagree” to “strongly agree”).
- Validation of the measurement model: ensuring the reliability and accuracy of questionnaire responses through statistical indicators, such as Cronbach’s alpha, composite reliability, and AVE for reflective models, while evaluating the statistical significance and weights of indicators for formative models [70].
- Estimation of the Structural Model: examining the relationships between unobserved product characteristics (latent variables), such as consumer satisfaction, and assessing how they interact; path coefficients measure the strength and direction of these relationships, similar to how marketers assess the impact of advertising campaigns on sales performance.
- Model Evaluation: uses statistical measures such as R2 (variance explained in dependent variables), Q2 (predictive relevance), and direct and indirect effects analysis to assess the model’s predictive accuracy.
6. Results
- Reliability and Validity Analysis of the Reflective Model
- -
- Subjective norms are significantly and positively associated with consumers’ purchase intention.
- -
- Subjective norms are significantly and positively associated with the purchasing decision.
- -
- Latent variables are represented by the central nodes in the diagrams (CDecision, APAq, PFMk, PFSC).
- -
- Observable variables are the outer nodes (q12a, q12b, q12c, etc.).
- Structural Relationships in the Model
- -
- PFSC (social and cultural factors) is connected to other latent variables such as APAg (individual factors) and PFMk (marketing factors), as well as CDecision (purchasing decision).
- -
- CDecision acts as a dependent variable, with multiple connections leading to it but none extending beyond it, suggesting that it represents the final outcome of the decision-making process.
6.1. Analysis and Interpretation of Numerical Values
- Quality (q12-a): the loading value is 0.873, indicating a strong influence on the latent variable APAg. This suggests that quality perception plays a significant role in the decision-making process, emphasizing that quality is a crucial factor in purchasing decisions. It is well known that quality is the foundation of any product, being decisive in consumer satisfaction and brand trust.
- Taste (q12-b): with a loading value of 0.894, taste also has a significant impact, making it a critical factor influencing APAg and, therefore, an essential criterion in the purchasing decision.
- Price (q12-c): the loading value of 0.789 indicates that price is also an important determinant, though it may not be as critical as taste or quality.
- Safety (q12-d): this criterion refers to consumers’ perception of the safety of agri-food products. For example, a product considered safe from a food safety perspective may be preferred over others.
- Convenience (q12-e): this refers to how easy it is to purchase and use a product. For instance, products that are conveniently packaged or require no prior preparation may be preferred. Similar to safety, no specific loading value is presented for convenience, but it remains an influencing factor, especially in the context of fast paced lifestyles. A high loading value for convenience would indicate that ease of preparation or consumption plays a significant role in the purchasing decision process.
- Nutrition (q12-f): this criterion relates to the nutritional value of products. Consumers may consider the content of vitamins, minerals, proteins, fiber, etc., when making purchasing decisions. Without a specific numerical value, it is difficult to assess the direct impact of nutrition, but it is a factor that is gaining importance in consumer preferences. A high loading value for nutrition would indicate that most consumers prioritize the quantity and type of nutrients in products.
- Tradition (q12-g): this can be a significant cultural factor in purchasing decisions. It refers to cultural customs and practices related to food. Products that are part of local traditions or associated with specific holidays may have a strong influence. If tradition has a high loading value, this could indicate that socio-religious customs strongly impact purchasing decisions.
- Product origin (q12-h): a high loading value here suggests that consumers are concerned about the provenance of products. Local, sustainable products or those with a specific historical background may be preferred by consumers.
- Appearance (q12-i): a high loading value for appearance suggests that the visual appeal of products is an important factor in purchasing decisions. The visual aspect of products can significantly impact purchasing choices. Attractive packaging, a fresh appearance, and overall presentation can influence consumer preferences.
6.2. Relationships Between Numerical Variables
- -
- APAg and PFSC: The value of 0.690 indicates a moderate relationship between these two latent variables, suggesting that individual factors (APAg) have a certain degree of influence on social and cultural factors (PFSC).
- -
- PFSC and Decision: A value of 0.474 for the relationship between PFSC and the purchasing decision shows that social and cultural factors have a significant impact on the buyer’s final decision.
- -
- PFMk and Decision: The value of 0.303 is relatively low, indicating that marketing factors (PFMk) may have a weaker influence on the final decision compared to social and cultural factors.
- Analysis of factor loadings for APAg and PFSC
- -
- PFSC and Decision: The loading coefficient of 0.474 shows that social and cultural factors significantly impact the buyer’s final decision. This aligns with previous findings indicating that culture, social groups, and traditions can influence food choices.
- -
- PFMk and Decision: The value of 0.303 is relatively low, indicating that marketing factors (PFMk) may have a weaker impact on the final decision compared to social and cultural factors. In other words, marketing strategies (advertising, promotion, etc.) may play a smaller role compared to social and cultural influences.
- -
- q11a—Local culture and tradition: Loading coefficient: 0.792. This indicates that local culture and traditions have a significant influence on purchasing decisions. People may be strongly influenced by cultural habits and traditions when choosing agri-food products.
- -
- q11b—Social group: Loading coefficient: 0.851. This suggests that social groups (such as friends, colleagues, or other communities) have a strong influence on food choices. Group recommendations and preferences can play a crucial role.
- -
- q11c—Professional community: Loading coefficient: 0.910. This shows that the professional community (colleagues, business partners, etc.) can impact purchasing decisions. Expertise and recommendations from this community can be highly relevant.
- -
- q11d—Education: Loading coefficient: 0.881. This suggests that education level influences food choices. Higher education may increase awareness and knowledge about agri-food products.
- -
- q11e—Family: Loading coefficient: 0.749. This indicates that family has a significant impact on purchasing decisions. Family values and preferences often shape individual choices.
- -
- q11f—Lifestyle: Loading coefficient: 0.869. This suggests that an individual’s lifestyle affects food choices. For example, a physically active person may choose different products compared to someone with a sedentary lifestyle.
- Key insights from factor loadings analysis
- Social and cultural factors
- -
- Local culture and tradition (q11a): Shape food preferences. Products that are part of local traditions are often preferred.
- -
- Social groups (q11b) and professional communities (q11c): Influence individual choices. Group recommendations and preferences are relevant.
- Promotional factors
- -
- Education (q11d): Can increase awareness and knowledge about agri-food products.
- -
- Lifestyle (q11f): Can affect food choices depending on individual activities and preferences.
- -
- Outer Loadings (Indicator Loadings): These indicators measure how well the observed variables (items) fit the latent (endogenous) variable. The loading values represent the correlation between the latent variable and each individual item. For example, for the latent variable APAg, the loading values for items q12a, q12f, q12g, etc., indicate how well these items reflect the concept of APAg. A higher loading value suggests a stronger association between the observed variable and the latent construct.
- -
- Cronbach’s Alpha: This is a measure of the internal consistency of a set of items (observed variables) that measure the same concept. A higher Cronbach’s Alpha value indicates better scale reliability. In the table, the values for APAg (0.932), PFSC (0.909), PFMk (0.896), and CDecision (0.922) suggest strong internal consistency, meaning that the items effectively measure their respective constructs.
- -
- Composite Reliability (CR): Another measure of scale reliability, similar to Cronbach’s Alpha, but focusing more on the correlations between latent and observed variables. Higher values indicate better reliability. In the table, the values for APAg (0.691), PFSC (0.70), PFMk (0.665), and CDecision (0.808) confirm that the constructs demonstrate acceptable to strong reliability.
- -
- Average Variance Extracted (AVE): This measures the proportion of variance in a latent variable that is explained by the observed variables. An AVE value greater than 0.50 indicates good convergent validity, meaning that the latent construct explains more than half of the variance in the observed variables. In the table, the values for APAg (0.925), PFSC (0.894), PFMk (0.875), and CDecision (0.910) suggest that the constructs exhibit strong validity.
6.3. Results Obtained in the Study
- Key Findings on Structural Relationships
- Analysis and interpretation of hypotheses
- -
- Hypothesis H1 investigates the relationship between the perception of agri-food product attributes (APAg)—measured through six of the ten reflective observed variables in the questionnaire—and the decision to consume healthy agri-food products (CDecision)—reflected through four observed variables. The results confirm that H1 is supported, as the relationship between product attributes and consumption is both positive and statistically significant (β = 0.251, t = 3.009, p = 0.002).
- -
- Hypothesis H2 is validated in our study, demonstrating that the perception of social and cultural factors (PFSC) directly influences the decision to consume agri-food products in daily activities (CDecision). The relationship between these two constructs is statistically significant (β = 0.165, t = 2.306, p = 0.021).
- -
- Hypothesis H3 confirms that the perception of marketing factors (PFMk) directly influences the decision to consume agri-food products, with a statistically significant relationship between the two constructs (β = 0.364, t = 6.212, p = 0.000).
- -
- Hypothesis H4 explores the mediating role of socio-economic and marketing factors as perceived by respondents in the decision-making process for purchasing healthy food products. The analysis highlights a statistically significant indirect effect between APAg (perceived attributes of agri-food products) and CDecision (consumption decision for agri-food products) through the mediator variable PFSC (perception of socio-cultural factors), with indicators (APAg → PFSC → CDecision) β = 0.165, t = 2.302, p = 0.021.
- -
- Hypothesis H5: The decision to consume agri-food products varies by gender and place of residence. However, the analysis indicates that no significant differences exist between groups based on residential environment or gender (see Table 5).
7. Discussions
8. Conclusions
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Conflicts of Interest
Appendix A. Questionnaire Structure
Q1. Gender | |
a-female | |
b-male | |
Q2. What age category do you fall into? | |
a-under 18 | |
b-between 18–25 years | |
c-26–35 years old | |
d-between 36–45 years | |
e-46–60 years old | |
f-over 60 | |
Q3. Your occupation: | |
a-student | |
b-employee | |
c-entrepreneur | |
d-unemployed | |
e-retired | |
Q4. What is the number of members in your household? | |
a-I live alone | |
b-2 members | |
c-3 members | |
d-4 members | |
e-more than 5 members | |
Q5. Education level: | |
a-secondary school | |
b-high school | |
c-university | |
d-postgraduate studies | |
Q6. Monthly income per person: | |
a-under 2500 lei | |
b-2500–5000 lei | |
c-5000–7000 lei | |
d-over 10,000 | |
Q7. Domicile: | |
a-rural | |
b-urban | |
Q8. How often do you prefer to buy agri-food products in specialized shops (local producers) or market? | |
Answers are on a Likert scale from 1 (very rarely) to 7 (always). | |
(Product category) | |
a-fruits | |
b-vegetables | |
c-fresh meat | |
d-meat preparations | |
e-milk and milk products | |
f-bread and bakery products | |
Q9. How often do you prefer to buy agri-food products in conventional supermarkets? | |
Answers are on a Likert scale from 1 (very rarely) to 7 (always). | |
(Product category) | |
a-fruits | |
b-vegetables | |
c-fresh meat | |
d-meat preparations | |
e-milk and milk products | |
f-bread and bakery products | |
Q10. How important are your previous gastronomic experiences in determining your food preferences? | |
Answers are on a Likert scale from 1 (to a small extent) to 7 (to a large extent). | |
Q11. To what extent do you consider that culture, social background and education influence your food purchasing decisions? | |
Answers are on a Likert scale from 1 (very little) to 7 (very much), with 4 being moderate. | |
a-local culture and tradition | |
b-social group | |
c-professional community | |
d-education | |
e-family | |
f-lifestyle | |
Q12. When you choose to buy a product from the following categories (fruit, vegetables, meat and meat products, dairy products, bread and bakery products) you make your decision based on: | |
Answers are on a Likert scale from 1 (very seldom) to 7 (very often), with 4 representing a moderate value. | |
a-quality | |
b-taste | |
c-price | |
d-safety (guarantee that it is a safe product) | |
e-convenience (degree of preparation or ease of cooking or eating the food) | |
Q13. In your decision to buy agri-food products, how important to you are the availability in local shops and the variety offered? | |
Answers are on a Likert scale from 1 (very little) to 7 (very much). | |
Q14. To what extent do you think income influences access to high quality food products? | |
Answers are on a Likert scale from 1 (to a small extent) to 7 (to a great extent). | |
Q15. You estimate that more than half of your monthly income is spent on basic agri-food staples such as fruit, vegetables, meat, bread, bakery products and dairy products. | |
Answers are on a Likert scale from 1 (disagree) to 7 (strongly agree). | |
Q16. How necessary do you think measures are to improve access to quality food for all income groups? | |
Answers are on a Likert scale from 1 (to a small extent) to 7 (to a large extent). | |
Q17. To what extent do you think local traditions influence your food choices? | |
Answers are on a Likert scale from 1 (to a small extent) to 7 (to a large extent). | |
Q18. To what extent do you think your home group or social circles influence your food choices? | |
Answers are on a Likert scale from 1 (to a small extent) to 7 (to a large extent). | |
Q19. How much do you think nutritional trends influence your food choices? | |
Answers are on a Likert scale from 1 (to a small extent) to 7 (to a large extent). | |
Q20. To what extent do you think health concerns influence your food choices? | |
Answers are on a Likert scale from 1 (to a small extent) to 7 (to a large extent). | |
Q21. To what extent do you think the presence of local markets influences your access to a variety of food products? | |
Answers are on a Likert scale from 1 (to a small extent) to 7 (to a large extent). | |
Q22. To what extent do you consider that lifestyle influences your consumption of basic agri-food staples such as fruit, vegetables, cheese and dairy products, meat and meat products, bread and bakery products? | |
Answers are on a Likert scale from 1 (to a small extent) to 7 (to a large extent). | |
Q23. To what extent are you willing to invest more to purchase organically certified agri-food products? | |
Answers are on a Likert scale from 1 (to a small extent) to 7 (to a large extent). | |
Q24. Are measures needed to ensure access to quality food for all income levels? | |
Responses are on a Likert scale from 1 (disagree) to 7 (strongly agree). | |
Q25. Do you think that government policies that promote sustainable agricultural practices and reduce carbon emissions should be prioritized in food system development? | |
Answers are on a Likert scale from 1 (somewhat) to 7 (strongly). | |
Q26. Does the degree of processing of agri-food products influence your consumption behavior decision? | |
Answers are on a Likert scale from 1 (to a small extent) to 7 (to a large extent). | |
Q27. In general, how often do you prefer to buy local products rather than imports? | |
Answers are on a Likert scale from 1 (to a small extent) to 7 (to a large extent). | |
Q28. Do you think that the promotion of a product influences your consumption decision? Consider the impact of various promotional tactics, such as advertising, public relations and other forms of communication with customers, in shaping your perception of the product and your final purchase decision. | |
Answers are on a Likert scale from 1 (never) to 7 (always). | |
Response category | |
a-advertising | |
b-price | |
c-experience | |
d-perception | |
e-safety | |
f-quality | |
g-brand | |
Q29. To what extent do you feel that the nutrition information on product labels and the way products are packaged influence you during the purchasing process? | |
Answers are on a Likert scale from 1 (to a small extent) to 7 (to a large extent). | |
Q30. By eating local, more natural and healthier products, I support environmental sustainability and community sustainability, promote a healthier lifestyle and support local producers. | |
Answers are on a Likert scale from 1 (to a small extent) to 7 (to a large extent). | |
Q31. In the future, do you intend to purchase the most natural and healthy agri-food products from specialized local producers? | |
Answers are on a Likert scale from 1 (to a small extent) to 7 (to a large extent). | |
a-I will continue to buy the most natural products from local producers | |
b-I am willing to try other new healthy products | |
c-I intend to increase the share of natural products in my own consumption | |
d-it is a wise decision to allocate more funds to healthier products |
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Factors | Description |
---|---|
Individual Preferences | The unique tastes and preferences of each person, influenced by past experiences, culture, social environment, and education. |
Accessibility | Availability and access to fresh and high-quality food, as well as transportation and distribution infrastructure. |
Economic Factors | Disposable income and food prices. Individuals with higher incomes may have more dietary choices. |
Social and Cultural Factors | Food traditions, social norms, and the influence of peer groups. Consumers are affected by the eating habits and practices of their communities. |
No. | Characteristics | Local Products | Imported Products |
---|---|---|---|
1 | Type of Producer | Small and medium-sized businesses, locally oriented | Multinational corporations, profit-driven |
2 | Production Method | Traditional, based on local craftsmanship | Advanced technology and intensive agriculture |
3 | Available Quantity | Limited, based on local capacity | Variable, influenced by demand |
4 | Origin | Local or regional | Other countries or continents |
5 | Point of Sale | Close to the production site | Distributed within the importing country |
6 | Processing Level | Minimal, with no significant modifications | High, using modern technologies |
7 | Type of Packaging | Minimalist, natural, or non-existent | Various packaging materials: plastic, metal, glass, or paper |
8 | Portion Sizes | Large packages (e.g., sacks) | Small, consumer-friendly packages |
9 | Preservation Methods | Drying, salting, smoking | Freezing, preservation, additional drying |
10 | Use of Additives | Almost nonexistent | Common, to enhance shelf life and taste |
11 | Market Availability | Limited, mainly in rural areas | Unlimited, widely available in large cities |
12 | Price | Relatively low, affordable | Higher, reflecting transport and processing costs |
13 | Price Stability | Fluctuating, affected by seasonality | Stable, but influenced by global trends |
14 | Product Information | Communicated verbally by sellers | Detailed labels, standardized internationally |
15 | Supply Reliability | Discontinuous, depending on resources | Continuous, with stable supply chains |
16 | Storage Capacity | Limited, lacking infrastructure | Refrigerated containers available |
17 | Quality Control | Minimal or nonexistent | Conducted according to international standards |
18 | Quality Complaints | No official procedures | Legal claims possible through consumer protection laws |
19 | Branding | Rarely used | Frequently used for differentiation |
Nr. crt | Construct | Questionnaire Items | Description |
---|---|---|---|
1 | Perceived attributes of agri-food products (independent variable) | Q12a–Q12j | Evaluation of key criteria such as quality, taste, price, safety, safety, convenience, nutrition, tradition, origin, appearance, and gastronomic experience; |
2 | Social and cultural factors (mediator variable) | Q11a–Q11f | Influence of culture, tradition, social group, education, family, and lifestyle on purchasing decisions; |
3 | Promotional factors (mediator variable) | Q28a–Q28g | Impact of advertising, price, previous experience, perception, safety, quality, and brand on consumer behavior; |
4 | Consumption decision for healthy products (dependent variable) | Q31 | Intention to purchase natural and healthy products from local producers. |
Education Level—Last School Completed | Place of Residence | Total | |||
---|---|---|---|---|---|
Rural | Urban | ||||
Education Level | 10 Years of Schooling | Number | 35 | 9 | 44 |
Vocational School | Number | 21 | 8 | 29 | |
High School | Number | 10 | 23 | 33 | |
Post-secondary School | Number | 73 | 32 | 105 | |
University Studies | Number | 16 | 41 | 57 | |
Postgraduate Studies | Number | 34 | 35 | 69 | |
Total | Number | 189 | 148 | 337 |
Endogenous Variable | Observed Variable | Outer Loadings | VIF | Cronbach’s Alpha | Composite Reliability | Average Variance Extracted (AVE) |
---|---|---|---|---|---|---|
APAg | 0.925 | 0.932 | 0.691 | |||
q12a | 0.873 | 2.356 | ||||
q12f | 0.789 | 2.140 | ||||
q12g | 0.717 | 1.874 | ||||
q12j | 0.830 | 2.623 | ||||
q12k | 0.835 | 2.590 | ||||
q12l | 0.869 | 2.947 | ||||
PFSC | 0.894 | 0.909 | 0.70 | |||
q11a | 0.863 | 2.512 | ||||
q11b | 0.769 | 2.365 | ||||
q11c | 0.807 | 2.487 | ||||
q11e | 0.878 | 3.163 | ||||
q11f | 0.859 | 3.027 | ||||
PFMk | 0.875 | 0.896 | 0.665 | |||
q28a | 0.757 | 2.166 | ||||
q28b | 0.785 | 2.115 | ||||
q28c | 0.862 | 3.227 | ||||
q28d | 0.870 | 3.383 | ||||
q28g | 0.797 | 2.047 | ||||
CDecision | 0.910 | 0.922 | 0.808 | |||
q31a | 0.871 | 2.585 | ||||
q31b | 0.884 | 2.772 | ||||
q31c | 0.933 | 4.229 | ||||
q31d | 0.906 | 3.367 |
Hypothesis | p Value | Validation |
---|---|---|
H1 | p = 0.002 | Yes |
H2 | p = 0.021 | Yes |
H3 | p = 0.000 | Yes |
H4a | p = 0.021 | Yes |
H4b | p = 0.000 | Yes |
H5 | Yes |
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Ungureanu, B.A.; Jităreanu, A.F.; Ungureanu, G.; Costuleanu, C.L.; Ignat, G.; Prigoreanu, I.; Leonte, E. Analysis of Food Purchasing Behavior and Sustainable Consumption in the North-East Region of Romania: A PLS-SEM Approach. Sustainability 2025, 17, 2601. https://doi.org/10.3390/su17062601
Ungureanu BA, Jităreanu AF, Ungureanu G, Costuleanu CL, Ignat G, Prigoreanu I, Leonte E. Analysis of Food Purchasing Behavior and Sustainable Consumption in the North-East Region of Romania: A PLS-SEM Approach. Sustainability. 2025; 17(6):2601. https://doi.org/10.3390/su17062601
Chicago/Turabian StyleUngureanu, Bianca Antonela, Andy Felix Jităreanu, George Ungureanu, Carmen Luiza Costuleanu, Gabriela Ignat, Ioan Prigoreanu, and Elena Leonte. 2025. "Analysis of Food Purchasing Behavior and Sustainable Consumption in the North-East Region of Romania: A PLS-SEM Approach" Sustainability 17, no. 6: 2601. https://doi.org/10.3390/su17062601
APA StyleUngureanu, B. A., Jităreanu, A. F., Ungureanu, G., Costuleanu, C. L., Ignat, G., Prigoreanu, I., & Leonte, E. (2025). Analysis of Food Purchasing Behavior and Sustainable Consumption in the North-East Region of Romania: A PLS-SEM Approach. Sustainability, 17(6), 2601. https://doi.org/10.3390/su17062601