The present study seeks to obtain validity and reliability evidence of the Parental Involvement Scale: Care and socialization activities in a sample of Peruvian parents of preschool children. For this purpose, the instrument was translated and linguisti-cally harmonized from its English version into Spanish and then applied to a group of 420 fathers and 420 mothers of children from five cities. Evidence of the internal structure was evaluated through a multigroup confirmatory factor analysis, using the maximum likelihood method to examine the structure of the original 26 items. Items with low factor loadings were progres-sively eliminated until a model with adequate fit indicators was found [χ2 (531) = 822.82; p <0,001; χ2 / gl = 1.550; GFI =.90; CFI =.95; TLI =.94; RMSEA =.036, IC del 90% (.031 –.041), p close = 1.000, SRMR =.05]. The result was a18-items scale distributed in the five original dimensions, each with Cronbach’s alpha internal consistency reliability between.66 and.78 and Omega coefficients between.70 and.75. Inter-rater reliability was between.67 and.88. The scope and limitations of the study are discussed considering the relevance of having instruments to measure paternal involvement relative to maternal involvement, that consider the perspectives of fathers and mothers in the Peruvian context.