3.1 Instrument validation
As for the sample used for the BES-Amazônia entrepreneur subscale test, it was observed that the distribution by age was unbalanced, with 42% between 18 and 24 years old, 34% between 25 and 34 years old, 15% between 35 and 44 years old and 9% 45 to 64 years. The majority (54.5%) of the participants were female. Consumers from all regions of Brazil participated, with 6% coming from the North region, 40% from the Northeast region, 32% from the Southeast region and 16% from the South region of Brazil. 104 participants responded in person, and 158 responded online.
Scale adjustment indexes (c 2 = 86,460. gl = 132; p < 0.001; RMSEA = 0.027; BCa 95% [0.00–0.037]; CFI = 0.998; BCa 95% [0.998–1.002]; TLI = 0.997; BCa 95% [0.997–1.002]). At root mean square error of approximation (RMSEA), a value lower than 0.08 for the proposed instrument indicates a good statistical fit for the model (Tucker and Lewis, 1973; West et al. 2012). Comparative fit indices (CFI) and Tucker-Lewis index (TLI) above 0.95 also indicate a good fit of the instrument, corroborating the good performance of the instrument.
gl = 210; p < 0.001) and KMO (0.89) values suggested the interpretability of the items' correlation matrix. For stability, Cronbach's alpha showed acceptable values (Cronbach's = 0. 925). The parallel analysis suggests five factors reflecting what is expected for the theoretically proposed constructs.
Still, on the validity of the instrument, the model was submitted to convergent validity, which analyzes the degree of correlation between the test and other tests that measure the same construct. The instrument presented acceptable values for all analyzed dimensions SBP (0.845 ), PBQ (0.964 ), WTB (0.889 ), BA (0.675) and IR (0.677 ), since the convergent analysis must present values above 0.50 (Maroco et al. 2014).
The results obtained indicate that the BES-Amazônia subscale presents psychometric solidity, with validation values of the variables within the expected range when associated with the interest of potential consumers in relation to the analyzed brands. Thus, the validated subscale proved to be applicable in this experiment. Appendix 1 describes the measurement items.
Regarding the validation of the entrepreneurial BES-Amazônia subscale, two items that did not reach values greater than or equal to 0.8 were grouped and reallocated for correction in at least two of the established criteria (clarity, relevance and coherence). After the corrections, the instrument presented adequate Content Validity Coefficient (CVC) values for practical use. The average CVC of the full scale, considering the three criteria - clarity, coherence and relevance - was 0.88. In addition, it presented good language clarity (0.78), practical relevance (0.87), and theoretical relevance (0.93), resulting in an overall CVC of 0.91 and a PJ 0.002. These results demonstrate that the BAS-Amazônia psychometric instrument, based on the two subscales, proved to be suitable for the Brazilian public. Appendix 2 describes the measurement items, and Appendix 3 presents the final guide used.
3.2 ESM of consumer perception
Based on the results of the Structural Equation Modeling (SEM) obtained from the application of the BES-Amazônia subscale in 543 potential consumers, the Brand equity definition model was established based on brands related to the environmental sustainability of Amazon that influence consumers' willingness to purchase the product WTB.
The structural model (Fig. 3) demonstrates that consumers' predilection for sustainable brand products is directly and positively influenced by all variables studied. Having the BA constructs: β = 0.886; standard error (SE) = 0.041; (p < 0.00) and RI: β = 0.881; standard error (SE) = 0.074; (p < 0.00) the highest influence values. The results showed significant effects, as well as the standardized paths between the factor and the indicators above 0.40., therefore sustainable (Wang and Wang 2019).
[2]As for the explanatory power of each variable separately, it is possible to observe that the strategic positioning of the brand — SBP has the greatest effect on willingness to purchase (R 2 = 0.738). This result demonstrates that hypothesis H1 (Strategic brand positioning from a set based on the theory of planned behavior positively influences the willingness to purchase) can be accepted, thus indicating that the branding strategy based on the search for the strategic positioning of the brand strongly influences consumer perception, not only having a positive effect on consumer 'willingness to buy,' but explaining most of the variation observed for this construct.
In relation to Hypothesis H2 (The perceived quality of the brand from a set based on the theory of planned behavior positively influences the willingness to purchase), it can also be accepted as the PQB construct has an isolated strong explanatory power (R2 = 0.719). However, the IR and BA variables corroborate the acceptance of hypotheses H3 and H4, but with low individual explanatory power when analyzed separately, the IR variables (R2 = 0.676; SE = 0.086; p < 0.000) and BA (R2 = 0.668; SE = 0.194; p = 0.001). In this sense, it is necessary to understand the constructs from a diffuse set.
3.2 Qualitative/fuzzy set comparative analysis (fs/QCA)
As for the agreement analysis of the judges regarding the classification of entrepreneurs and their brands in the indices contained in the proposed guide, the comparison by Kappa de Fleiss for the main diagnosis showed that there is a moderate reliability among the three evaluators (K = 0.645; [CI95% : 0.524–0.710]; z = 9.784; p < 0.001), denoting a statistically significant agreement between raters. The results of the Kappa analysis for individual categories were also acceptable and statistically significant for all classes present in the guide.
The indicators presented in the main solutions showed that the consumer's perception of the product presents sufficiency for the interest in WTB purchase, having as central conditions the strategic positioning of the brand (SBP), the perceived quality of the brand (PBQ), innovation in retail (RI), but not necessary separately for the interest in the purchase.
This behavior can be seen in the XY graph of the constructs associated with interest in buying (Fig. 4). Figure 4 reveals that this relationship is, in fact, asymmetrical; for example, Fig. 4a indicates that high values of consumer perception of the environmental sustainability lead to high values of interest in purchasing (WTP); however, low perception values also lead to high and low company performance values. Therefore, high values of sustainability perception by consumers are sufficient for high brand interest performance, but they are not exactly necessary since low values of consumer perception can also lead to an interest in the acquisition.
When considering the ACI construct for the possible solution (Fig. 4b), the WTB values behave more symmetrically than the previous data. This result demonstrates the strong influence of consumers' perception of entrepreneurs' concerns about their brand's involvement with the communities involved (ACI).
An understanding of each construct can be obtained the analysis of configurations of possible solutions. In the configurations present in Table 1, the different necessary and sufficient paths present in the interaction between the analyzed constructs and the willingness to purchase are presented (Willingness I'm buying — WTB) of products offered by sustainable brands. More than one combination of conditions is sufficient to achieve the result. Different combinations show satisfactory global consistency (around 0.888) and also satisfactory global coverage (0.892).
Each column represents an alternative combination of conditions that are associated with the willingness-to-buy (WTB) outcome. Based on the analysis carried out, it was possible to identify five alternative solutions with an acceptable consistency value, resulting in the acceptance of the products by the evaluated customers. Each of these solutions represents a grouping of constructs that share acceptable configurations and of elements or antecedents, which are associated with high levels of conformity, that is, total agreement.
Table 1
Configurations of the conditions present in the interaction between the analyzed constructs and the WTB willingness to purchase (WTB).
Settings | Solution | |
I | II | III | IV | V |
SBP | ● | ● | ● | ● | ● |
R.I | ● | ● | ● | ● | ● |
B.A | ● | ● | | ● | ⊗ |
PBQ | ● | ● | | ● | ● |
ACI | ● | ● | ● | ● | ● |
MPCM | ● | ⊗ | ⊗ | | ⊗ |
ARM | ● | | ● | | ⊗ |
BE | ● | ● | ● | | ● |
VSFA | ● | ● | ● | | ● |
Number of cases (% cumulative) | 51 (21%) | 48 (42%) | 25 (52%) | 18 (60%) | 14 (66%) |
Consistency | 0.988 | 0.973 | 0.923 | 0.964 | 0.896 |
gross coverage | 0.737 | 0.548 | 0.595 | 0.576 | 0.287 |
single coverage | 0.486 | 0.123 | 0.0253 | 0.011 | 0.010 |
overall consistency | 0.888 | | | | |
general coverage | 0.892 | | | | |
Note: SBP - strategic brand positioning (Strategic Brand Positioning ), PBQ - perceived brand quality (Brand Quality Perception ), IR - retail innovation (Retail Innovation)and BA - Brand Authenticity. The presence of the condition is indicated by black circles (●), the absence of the condition is represented by crossed circles (⊗ ), the non-completion indicates an indifference to the construct in the solution. Large circles indicate the central condition; small circles indicate the peripheral condition for a solution. |
The result of the QCA (Table 1) demonstrates that the presence of the SBP, IR, and ACI constructs are central conditions for the purchase intention of sustainable products. These findings highlight that, in most cases, the conjunction of these constructs is necessary for constructing an appreciable image by the consumer. According to the analysis of need (Table 1), two different combinations lead to a high content of information consistent with the analysis of sufficiency, the first and second solution (I and II).
The first solution (I) represents the set with the highest coverage (0.737) and consistency (0.988). It is possible to understand that, for purchase intentions of sustainable brands to occur with greater assertiveness, all constructs must be present since this solution reflects the combination of the presence of all analyzed constructs.
The second and third solution (II and III) mainly reflects the negation of the MPCM construct, associated with the absence of the ARM constructs (II). This solution explains that high purchase intentions can be achieved with high message personalization, regardless of the benefits related to product downtime. Another occurrence of a solution that corroborates this behavior is solution III.
This solution (III) demonstrates that acceptance of sustainable products can be achieved even with the absence of consumer perception of brand authenticity (BA) and perceived product quality (BPQ). In this sense, regardless of the lack of perception of quality, authenticity, and the low relationship with the local market, consumers tend to consume such products well presented with brand equity. Similar results were observed by Pappas et al. (2021).
This solution demonstrates that, even without factors relevant to the perception of entrepreneurs, consumers, based on the information presented about the brands, are willing to purchase such products. In their study, Liu et al. (2020) observed that knowledge about the sustainable attitudes of brands, when perceived by customers (through brand recognition and image), positively affects brand perception at the cognitive and affective levels.
As well as solutions IV and V demonstrate that the perceptions of Innovation in retail (RI), Commercialization of products and consumer market (MPCM), and Availability of resources and raw material used (ARM) play a smaller role in the purchase intention, so BE AND VSFA. In this sense, regardless of the lack of exclusive perception of the brand from the entrepreneurs. From these results, it is possible to reject alternative hypotheses H7 and H8. This same solution also demonstrates that the central conditions are sufficiently strong factors since, even with the absence of IR, MPCM, and ARM, there is still acceptable coverage. This result may also be linked to the capacity of the messages present in the brand's discourse.
Due to the reduced capacity for advertising writing that is present in a package or logo, brands tend not to prioritize the presentation of sustainable practices and procedures adopted around branding management, leaving this informational content available in their body copies. These difficulties can be mitigated by constructing narratives that aim to appeal to sustainability, narratives based on the AINDA methodology (Radu et al. 2021), and from this to boost the discourse of the sustainable brand on the relevance of the practices adopted by companies, in addition to brand engagement on full sustainability (Kasuma et al. 2022).
It is worth noting that, as observed in the structural equation modeling of the three constructs SBP, IR, and PBQ, two (SBP and IR) showed that the existence of WTB was central to those analyzed from the QCA analysis. This result indicates that the set of constructs representative of the perception of entrepreneurs' behavior on environmental sustainability and knowledge of the forest has little influence on potential consumers' willingness to purchase.
The perceived quality of the brand (PBQ), even though it is present in four of the five solutions conceived in the fsQCA analysis, appears as a peripheral condition for the positive result of the interest in purchasing products from sustainable brands. Product quality refers to how well a product meets customer needs, serves its purpose, and meets the standards expected by consumers. It is a determining factor that contributes to building the customer's perception of a brand's products (Dangi et al. 2021).
When evaluating product quality from an imaginary exercise, consumers consider several key factors, including whether a product solves their problem, whether it works efficiently, or meets the purposes of satisfaction with their consumption (Rodrigues et al. 2021). However, as quality is already present in the product based on social agreements (brand trust, reputation, compliance with sanitary requirements), consumers start to consider other relevant factors for the choice, such as: consumer confidence and changes in taste and valuation of the ethical practices of the companies, and product innovation and purchase expectations, these factors emerge strongly influencing the interest in the purchase (Nam et al. 2011; Sasmita and Mohd Suki 2015; Mustafa et al. 2022).
This behavior can be explained from Maslow's theory of necessity. According to the theory, human needs are organized in a hierarchy, starting with basic physiological needs and moving up to self-actualization (Niemela and Kim 2014). The perception of product quality can be an important factor, but not decisive alone for consumers when they are left with the completeness of social and personal self-realization.