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versión impresa ISSN 1729-4827


OLIVAS-UGARTE, Lincol Orlando  y  CIPRIANI-DELGADO, Christabel Salome. Revised Shyness Scale (ETR-13): Psychometric Properties in Peruvian Adolescents. liber. [online]. 2022, vol.28, n.1, e506.  Epub 14-Feb-2022. ISSN 1729-4827.


shyness can interfere with the normal development of social relationships during adolescence, and negatively affect self-concept during schooling; therefore, it is necessary to have valid, reliable, equitable measuring instruments and normative conditions for their appropriate use in the Peruvian context.


this instrumental research aimed at analyzing the psychometric properties of the Revised Shyness Scale (ETR-13) and generating normative data for its application in adolescents from Lima Metropolitan Area.


five hundred (500) adolescents aged between 12 and 17 (M = 14.65, SD = 1.60) participated in the study, out of which 205 (41%) were males and 295 (59%) females.


the results of the confirmatory factor analysis showed acceptable values for a second-order model: χ2/df = 1.41, CFI = .996, TLI = .995, RMSEA = .029 and SRMR = .035. Convergent validity was verified with the Social Anxiety Scale for Adolescents (SAS-A) (r = .674; r2 = .25) and divergent validity with the Academic Self-Concept Scale (EAA) (r = -.436; r2 = .19). Consequently, the reliability was obtained by the ordinal omega coefficient for the general scale (ω = .90) and its two factors (ω = .89 and ω = .77).


a factorial invariance analysis made it possible to demonstrate the equivalence of the instrument by sex and age (ΔCFI < .01, ΔRMSEA < .01). Therefore, it is concluded that ETR-13 has adequate psychometric properties to evaluate the shyness variable in the target population.

Palabras clave : ETR-13 scale; adolescence; validity; reliability; equity..

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