3.1. Bivariate Analyses
Table 1 presents the differences in the 5Cs and in the overall PYD score when analyzing gender differences. Significant differences were found in competence, caring, and character. Women had the highest scores in caring and in character. Men scored higher in perceived competence. After the Kruskal–Wallis tests, significant differences with small effect sizes were found between the female and male groups in terms of competence (H(1) = 12.5,
p < 0.001, ε
2 = 0.013), caring (H(1) = 51.7,
p < 0.001, ε
2 = 0.052), and character (H(1) = 17.4,
p < 0.001, ε
2 = 0.017). There were no significant gender differences in confidence and connection, nor in the overall score. Concerning age differences, no significant results were observed concerning nationality, but small differences were detected in character, H(1) = 6.32,
p = 0.012, ε
2 = 0.005, so Spanish participants showed lower scores compared to their non-Spanish counterparts. Regarding differences in PYD based on having a partner or not, no significant results were found. No effect was observed in the overall score, nor in the 5Cs (
Table 1).
Table 2 shows the differences in PYD of the students according to fathers’ education level. Significant differences were found in competence and in the overall PYD score. The students with a father with a high education level, medium education level, or university education, presented the highest scores in competence and in the overall PYD score. Significant differences were observed in competence (H(4) = 20.7,
p < 0.001,
ε2 = 0.021) between participants with a father without studies and those with a father with a medium level of education (
W = 4.59,
p = 0.01), between those participants with fathers without studies and those with a father with a university education (
W = 5.51,
p < 0.001), and between participants with fathers with basic studies and participants with fathers with a university education (
W = 4.26,
p = 0.022). In the overall PYD score, significant differences (H(4) = 9.92,
p = 0.042,
ε2 = 0.010) of a small effect size were also found; although, in the post hoc analysis, no significant differences were found between any group.
Table 3 shows the results when analyzing differences in terms of mothers’ education level. Significant differences were found in competence, connection, and in the overall PYD score. As with the fathers, students with a mother with a high education level presented higher scores in competence, connection, and in the overall PYD score. Regarding competence, significant differences were found between participants with mothers with basic studies and those with mothers with a university education (H(4) = 20.8,
p < 0.001, ε
2 = 0.021;
W = 5.49,
p < 0.001). In terms of connection, significant differences were also found between youths with mothers with basic studies and youths with mothers with a university education (H(4) = 13.2,
p = 0.010, ε
2 = 0.013;
W = 4.56,
p = 0.011). Finally, significant differences were also observed between the same two categories of maternal education in terms of the overall PYD score (H(4) = 13,
p = 0.011,
ε2 = 0.013;
W = 4.22,
p = 0.024). All these reported differences showed a small effect size.
Table 4 summarizes the differences in PYD in terms of perceived socio-economic level. Significant differences were observed in confidence, competence, connection, and in the overall PYD score. First, the higher the perceived socio-economic level was, the higher the confidence score was. Similarly, a higher perceived socio-economic level was associated with a higher score in terms of competence. The same results were observed in terms of connection and in the overall PYD score. No significant socio-economic differences were observed for caring and character. After the Kruskal–Wallis test, in terms of confidence, significant differences (H(4) = 13,
p = 0.011, ε
2 = 0.013) were observed between those who perceived themselves as quite poor and those who were quite rich (
W = 4.65,
p = 0.009). Regarding competence, significant differences (H(4) = 21.8,
p < 0.001), ε
2 = 0.022) were found between those who perceived themselves as quite poor and normal (
W = 4.56,
p = 0.011), between the levels of quite poor and quite rich (
W = 6.26,
p < 0.001), and between the levels of normal and quite rich (
W = 4.16,
p = 0.027). When comparing connection, significant differences (H(4) = 21.4,
p < 0.001, ε
2 = 0.022) were found between participants who perceived themselves to be of quite poor SES and those with medium SES (
W = 5.14,
p = 0.003), as well as between youths with quite poor SES and those with quite rich SES (
W = 5.19,
p = 0.002). Finally, in terms of the overall PYD score, significant differences (H(4) = 9.53,
p = 0.049, ε
2 = 0.010) were detected between the quite poor and quite rich groups (
W = 4.09,
p = 0.031). All these effects presented a small effect size.
Table 5 presents differences in PYD based on the participants’ area of study. Significant differences with a small effect size were found in terms of competence, connection, caring, and character. Students enrolled in Social and Law Sciences degree programs showed higher scores in competence, connection, and character. Health Sciences students presented the highest scores in terms of caring. Engineering and Architecture students scored the lowest in connection, caring, and character. Humanities students had the lowest scores in perceived competence. After the Kruskal–Wallis test, regarding competence, significant differences (H(3) = 15.1,
p = 0.002, ε
2 = 0.015) were found between Arts and Humanities students and Social and Law Sciences students (
W = 5.07,
p = 0.002). Concerning connection, significant differences (H(3) = 19.2,
p < 0.001,
ε2 = 0.020) were found between Engineering and Architecture students and Social and Law Sciences students (
W = 5.93,
p < 0.001). Regarding caring, significant differences (H(3) = 25.4,
p < 0.001, ε
2 = 0.026) were found, specifically when comparing Engineering and Architecture students with Arts and Humanities students (
W = −5.06,
p = 0.002), with Social and Law Sciences students (
W = 6.35,
p < 0.001), and with Health Sciences students (
W = 6.21,
p < 0.001). Moreover, significant differences (H(3) = 10.20,
p = 0.017, ε
2 = 0.011) were detected in terms of character between Engineering and Architecture students and Social and Law Sciences students (
W = 4.45,
p = 0.009).
Figure 1 shows the differences in PYD in terms of university size. Significant differences were found in confidence, competence, connection, caring, character, and in the overall PYD score. Students from the smallest universities (up to 10,000 students) presented higher scores in all 5Cs and the PYD overall score. Medium-size universities (10,000–30,000 students) presented the lowest scores in confidence, competence, caring, character, and in the overall PYD score. Students from the largest universities (more than 30,000 students) had the lowest scores in terms of connection. After the Kruskal–Wallis test, in confidence, significant differences (H(2) = 8.43,
p = 0.015, ε
2 = 0.008) were found between small-size universities and medium-size universities (
W = −3.93,
p = 0.015). Regarding competence, significant differences (H(2) = 11,
p = 0.004, ε
2 = 0.011) were found between the smallest and medium-size universities (
W = −4.22,
p = 0.008), and between the smallest and largest universities (
W = −3.50,
p = 0.035). When analyzing connection, significant differences (H(2) = 28.6,
p < 0.001, ε
2 = 0.029) were found between small- and medium-size universities (
W = −6.46,
p < 0.001), and between small- and large-size ones (
W = −6.17,
p < 0.001). In terms of caring, significant differences (H(2) = 9.8,
p = 0.007, ε
2 = 0.010) were detected between small- and medium-size universities (
W = −3.97,
p = 0.014) and between small- and large-size universities (
W = −3.36,
p = 0.046). In character, significant differences (H(2) = 9.02,
p = 0.011, ε
2 = 0.009) were observed when comparing the smallest institutions with medium-size ones (
W = −4.28,
p = 0.007). Finally, in terms of the overall PYD score, significant differences (H(2) = 23.6,
p < 0.001, ε
2 = 0.024) were observed between small- and medium-size universities (
W = −6.37,
p < 0.001), and between the smallest and largest universities (
W = −4.92,
p = 0.001). For these results, the effect size was also small.
Table 6 shows the differences in PYD in terms of place of residence. Significant differences were found in terms of competence, connection, and in the overall PYD score. Students living in large cities (more than 300,000 inhabitants) scored higher in terms of perceived competence. Students living in the countryside scored higher in terms of connection. Furthermore, a higher overall PYD score was detected in participants who lived in the countryside or in large cities. After the Kruskal–Wallis test, significant differences in terms of competence (H(3) = 20.1,
p < 0.001, ε
2 = 0.020) were found when comparing large cities with medium–large cities (
W = −4.710,
p = 0.005), with medium–small cities (10,000 to 50,000 inhabitants) (
W = −4.97,
p = 0.003), and with small cities (up to 10,000 inhabitants) (
W = −4.83,
p = 0.004). In terms of connection, significant differences (H(4) = 9.93,
p = 0.042, ε
2 = 0.010) appeared; although, in the post hoc analysis, no significant differences were found between any group regarding place of residence. In terms of overall PYD score, significant differences (H(4) = 10.3,
p = 0.036, ε
2 = 0.011) were found between large and medium–large cities (
W = −4.25,
p = 0.022). In terms of the 5Cs, significant differences were not found. All these differences showed a small effect size.