A New Brief Scale to Measure Optimism

© The Author(s) 2019.This research was done to find if using maximum likelihood could reduce the Interactive Optimism Scale-Garcia to a new valid and reliable shorter version. There were 502 adults: 263 women and 239 men (Mage = 34.67, SD = 12.27). It was used in confirmatory factor analysis. A four-item scale is obtained, having excellent goodness of fit: [¿2/df =.609, GFI (Jöreskog and Sörbom¿s Goodness-of-Fit Index) =.999, NFI (Normed Fit Index) =.999, CFI (Bentler¿s Comparative Fit Index) = 1.000, RMSEA (Steiger¿Lind root mean square error of approximation) =.000 (90% CI =.0001,.077); SRMR (standardized root mean square residual) =.007], as well as factorial invariance across sexes; the scale has good internal consistency (¿ =.869, ¿ =.858, ordinal ¿ =.906). Brief Interactive Optimism Scale-G correlates significantly with self-esteem (r =.779, p <. 01, 95% CI [.816,.736]), depression (r = ¿.810, p <.01, 95% CI [.843,.772]), and psychopathy (r = ¿.670, p <. 01, 95% CI [.723,.611]). In conclusion, Brief Interactive Optimism Scale-G is a good option for measuring optimism in Mexicans.

A New Brief Scale to Measure Optimism Academic Article in Scopus