The purpose of this study was to analyze the reliability and validity evidence of scores on the Spanish version of EQ-i: YV-S in Spanish adolescents. The total sample was comprised of 508 participants from Grades 7 to 12, 241 males (47.4%) and 267 females (52.6%), each of whom completed the questionnaires on two separate occasions. Three [intrapersonal (α = .83, CR = .86, and McDonald Omega = .86), stress management (α = .83, CR = .86, and McDonald Omega = .85) and adaptability (α = .82, CR = .85, and McDonald Omega = .85)] of the four scales had acceptable internal consistency. Exploratory Factor Analysis (EFA) and Confirmatory Factor Analysis (CFA) were used with FACTOR and EQS version 6.1 software to examine validity evidence based on internal structure drawn from the scores on the EQ-i: YV-S, supporting the multidimensionality of the questionnaire. Three models were tested; the best fit to the data was the hierarchical model (S-Bχ2
/ df = 2.11, CFI = .93 and RMSEA = .047), which hypothesized that the four specific factors (interpersonal, intrapersonal, stress management, and adaptability) were explained with a second-order factor, Emotional-Social-Intelligence (ESI). Finally, significant positive correlations were found between general self-concept and EQ-i: YV-S [interpersonal (r = .153, p < .001), intrapersonal (r = .235, p < .001), stress management (r = .145, p < .001), adaptability (r = .311, p < .001) and ESI (r = .360, p < .001)]; ESI showed significant direct power prediction of the general self-concept (.52) as demonstrated through structural equation modeling.