2. Multiple Factor Analysis
Table 1. shows the percentage of variability explained by the two first factors for each of the multiple factor analyses (MAF) carried out, as well as the cosine squared for each variable in each factor.
Table 1. Eigenvalue and percentage of variability explained by the first two factors for each of the three Multiple Factor Analysis carried out, and cosine squared for each variable in each factor. The criterion “none of the above” was excluded from the analysis. When the sum of the cosine squared in the two factors was >0.4, the criterion was chosen for the hierarchical cluster (values in bold).
|
|
Factor 1 |
Factor 2 |
Picture 1 (based on color) |
Eigenvalue |
1.141 |
1.004 |
Variability (%) |
22.286 |
19.606 |
Cosine squared |
Fresh |
0.056 |
0.650 |
Tender |
0.335 |
0.186 |
Tasty |
0.488 |
0.110 |
Juicy |
0.395 |
0.006 |
Healthy |
0.077 |
0.192 |
Cheap |
0.004 |
0.000 |
Picture 2 (based on marbling) |
Eigenvalue |
1.489 |
0.583 |
Variability (%) |
48.854 |
19.116 |
Cosine squared |
|
|
Tender |
0.441 |
0.307 |
Tasty |
0.515 |
0.214 |
Juicy |
0.464 |
0.112 |
Healthy |
0.533 |
0.131 |
Cheap |
0.008 |
0.002 |
Picture 3 (Rib) (based on marbling) |
Eigenvalue |
1.415 |
1.052 |
Variability (%) |
20.699 |
15.382 |
Cosine squared |
|
|
Tender |
0.436 |
0.016 |
Tasty |
0.484 |
0.000 |
Juicy |
0.611 |
0.015 |
Healthy |
0.031 |
0.001 |
Cheap |
0.029 |
0.009 |
Less waste |
0.099 |
0.252 |
Fat color |
0.004 |
0.575 |
Fat amount |
0.017 |
0.046 |
General color |
0.000 |
0.687 |
In the MAF of Picture 1, the first two factors explained 41.9% of the variability. “Tender”, “tasty” and “juicy” criteria presented a sum of cosine squared > 0.4 and were therefore selected for the hierarchical cluster. In the MAF of Picture 2, 68% of the variability was explained by the first two factors and the selected criteria were “tender”, “tasty”, “juicy” and “healthy”. In the MAF of Picture 3, 36.1% of the variability was explained by the first two factors and selected criteria were “tender”, “tasty”, “juicy”, “fat color”, and “general color”.
Three groups of consumers were obtained from the cluster analysis, with a cophenetic correlation of 0.456. The description of consumer profiles (clusters) according to their socio-demographic variables, purchase habits and beliefs, and by their choice behavior, are shown in Table 2; Table 3 respectively.
Table 2. Percentages of each socio-demographic characteristic, purchase habits, and beliefs for each of the consumer groups obtained in the cluster analysis.
|
|
Consumer Group |
|
Description |
|
Hedonic (38.3%) |
Health-Conscious (37.4%) |
Appearance (24.2%) |
p-Value |
Gender |
Male |
65.6 * |
64.4 |
64.2 |
0.841 |
Female |
34.4 |
35.6 |
35.8 |
Age |
≤35 |
41.1 |
42.4 |
46.7 |
0.195 |
36–55 |
38.1 |
38.6 |
34.5 |
>55 |
20.8 |
19.6 |
18.7 |
Highest education level reached |
Primary school |
1.2 |
1.5 |
1.9 |
0.272 |
Secondary school |
26.1 |
23.7 |
21.1 |
Tertiary or higher |
72.7 |
74.8 |
77.0 |
Occupation |
Crop production |
33.8 |
27.2 |
22.2 |
0.003 |
Meat production |
22.8 |
28.9 |
29.3 |
Livestock or meat commercialization |
37.0 |
3.0 |
2.1 |
Human health |
4.9 |
4.75 |
8.3 |
None of the above |
34.9 |
36.2 |
38.0 |
Are you the person in charge of beef buying at home? |
Yes |
80.6 |
82.3 |
81.1 |
0.683 |
No |
19.4 |
17.7 |
18.9 |
Where do you buy beef most often? |
At the supermarket, packaged |
11.7 |
11.7 |
10.6 |
0.221 |
Butcher’s at the supermarket |
20.3 |
17.6 |
16.4 |
Traditional butcher’s shop |
68.0 |
70.6 |
73.0 |
How often do you eat beef? |
Daily |
15.7 |
16.8 |
18.2 |
0.221 |
Alternate days |
37.7 |
38.7 |
38.7 |
Twice a week |
11.8 |
12.7 |
12.4 |
Once a week |
30.7 |
29.4 |
28.0 |
Once a month |
4.2 |
2.3 |
2.8 |
Do you agree with the following sentence: “The two main characteristics defining beef quality at purchase time are beef color and marbling” |
Yes |
88.9 |
91.1 |
89.5 |
0.351 |
No |
11.1 |
8.9 |
10.5 |
Table 3. Description of consumer profiles (clusters) according to their choice behavior. Percentages are of people who marked a criterion as used in the choice of each picture.
Description |
|
Hedonic (38.3%) |
Health- Conscious (37.4%) |
Appearance (24.2%) |
p |
Based on the color of the following five steaks, which one would you choose? (Picture 1) |
Option 1 (darker) |
1.5 |
1.6 |
0.8 |
0.923 |
Option 2 |
7.4 |
6.1 |
8.0 |
Option 3 |
35.6 |
36.3 |
35.1 |
Option 4 |
42.5 |
42.6 |
41.4 |
Option 5 (lighter) |
13.1 |
13.4 |
14.6 |
Fresh 1 |
62.3 |
63.6 |
79.6 |
<0.001 |
Tender |
49.0 |
36.1 |
43.6 |
<0.001 |
Tasty |
56.2 |
22.2 |
27.6 |
<0.001 |
Juicy |
24.4 |
9.7 |
5.5 |
<0.001 |
Healthy |
26.1 |
31.2 |
39.8 |
<0.001 |
Cheap |
0.8 |
0.3 |
0.8 |
0.327 |
None of the above |
2.9 |
1.5 |
1.7 |
0.001 |
Based on the marbling of the following two steaks, which one would you choose? (Picture 2) |
Option 1 (more marbling) |
13.2 |
14.9 |
12.4 |
0.452 |
Option 2 (less marbling) |
86.8 |
85.1 |
87.6 |
Tender |
37.8 |
15.4 |
27.6 |
<0.001 |
Tasty |
72.3 |
3.7 |
23.8 |
<0.001 |
Juicy |
28.0 |
1.9 |
4.2 |
<0.001 |
Healthy |
56.1 |
94.6 |
23.8 |
<0.001 |
Cheap |
0.0 |
0.0 |
0.0 |
1.000 |
None of the above |
3.3 |
0.7 |
3.2 |
0.001 |
In general, which of the following two ribs would you choose? (Picture 3) |
Option 1 (less fattened) |
77.8 |
95.4 |
89.3 |
<0.001 |
Option 2 (more fattened) |
22.2 |
4.6 |
10.7 |
Tender |
36.6 |
13.5 |
19.2 |
<0.001 |
Tasty |
72.6 |
1.2 |
12.4 |
<0.001 |
Juicy |
26.6 |
3.1 |
2.1 |
<0.001 |
Healthy |
45.8 |
62.1 |
47.4 |
<0.001 |
Cheap |
0.1 |
0.0 |
0.0 |
0.447 |
Less waste |
36.5 |
37.7 |
43.2 |
0.055 |
Better fat color |
9.2 |
0.5 |
61.3 |
<0.001 |
Adequate fat amount |
48.7 |
48.9 |
50.1 |
0.886 |
Better general color |
24.4 |
2.0 |
100 |
<0.001 |
None of the above |
1.6 |
1.4 |
0.0 |
0.026 |
No differences between groups were found for consumer gender, consumer age, or beef consumption frequency (p > 0.05), but occupation differed between consumer groups (p < 0.001). In the same way, no differences were found between groups in the chosen Picture 1 or chosen Picture 2 categories (p > 0.05), but differences were found for the chosen Picture 3 category (p < 0.001) between the three different groups.
The first cluster (
n = 751, 38.3% of the sample) comprises respondents who showed a profile that could be termed as “hedonic”. To choose the pictures, they used the criteria “tender”, “tasty” and “juicy”, whereas “healthy” or “color” was less frequently chosen than expected. A greater proportion of them preferred the second option of Picture 3; that is, the most fattened. According to Smith and Carpenter
[13], tenderness, flavor, and juiciness are the primary traits to describe overall beef palatability. Moreover, according to Lusk et al.
[14], these primary traits are highly correlated with overall experienced quality, intention to purchase, and willingness to pay. Thus, this group is characterized by choosing based on palatability. In this group, we found the most people whose occupation was related to crop production (33.8%). The second group (n = 734, 37.4% of the sample) selected the criterion “healthy” in Picture 2 and in Picture 3, but they did not mark any of the other criteria as important and they cannot be defined in terms of occupation. Thus, they could be classified as “health-conscious”. They chose the less fattened Picture 3 as recommended by the WHO
[15] to decrease the number of calories in their meals. The third group (
n = 475, 24.2%) chose “fresh” and “healthy” for Picture 1, no particular criteria for Picture 2 and “less waste”, “better fat color”, and “better general color” for Picture 3; that is, they were people that use general appearance to choose the pictures. Visual appearance characteristics are highly related to consumer expectations and are intrinsic quality cues
[16]. Moreover, because these characteristics are used to access food quality, they are highly related to their choice at purchase
[17]. Consumers from the third group were not worried about tenderness, juiciness, taste, or health, although, curiously, they were mostly occupied in human health-related jobs. Although clusters could not be defined in terms of consumers’ age, people in the “appearance” group tended to be the youngest (≤35 years old); this could explain their lack of concern with the “healthy” criterion.
Consumers are the last link of the production chain, and they have their own expectations about the product, associated with their beliefs and/or feelings. According to Deliza et al.
[18], previous information and experiences form the expectation process. In this sense, the frequency of consumption influences the expectation process; indeed, it influences the perception of beef quality, as shown in the present study. Since there is little information about fresh meat, consumers have difficulties in forming their quality expectations. According to Grunert et al.
[19], labeling and appearance are the main characteristics that form meat quality expectations. However, they do not seem to be very good predictors of meat-eating quality.
The three groups of consumers identified in Argentina are important for marketing strategies, as they have their own characteristics. While consumers in the “hedonic” group search for a pleasurable sensory experience, consumers in the “appearance” group search for visual aspects, and those in the “health-conscious” group are interested in a healthy diet.