engleski

Factorial Validity of the IPIP Junior Scale: How Early can we Start Measuring Personality?

In this paper we examine the factorial validity of the IPIP junior scale using children and adolescents aged 9-19 years as subjects. The International Personality Item Pool (50 items) is a cross-cultural instrument targeted to measure the Big-Five domains, adapted for child and adolescent ratings in this study. A large sample of children and adolescents in Croatia (1919), aged from 9 to 19 years used the IPIP50 to rate themselves (self-ratings) and they were also rated by their parents or guardians (parental-ratings). The EFA and CFA were performed in order to determine factorial validity and factorial invariance across different age groups in comparison with parental ratings. The structure of the self-ratings and the model fit in the age subgroups of 9-12 years suggest that at this age children do not perceive themselves in terms of the Big five domains. At age groups older than 13 years the factor structure of the IPIP junior and the model fit is entirely comparable to the parental ratings. In spite of overall poor fit of the orthogonal five factor model in both self and parental ratings (CFI for age groups from 13-19 years are in the range between 0.80 and 0.90), it is concluded that IPIP junior is a suitable instrument for those age groups, however with further psychometric refinement. The minor departure from the hypothesized structure can be attributable to the few items that should be replaced or rephrased.

Factorial validity; IPIP; children; personality

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