Abstract

VILANOVA, Thiago Rafael Santin Felipe; COSTA, Ângelo Brandelli; NADELHOFFER, Daniela Goya Tocchetto Thomas  and  KOLLER, Silvia Helena. Validity evidence of the free will inventory for the brazilian population. Aval. psicol. [online]. 2018, vol.17, n.1, pp. 1-11. ISSN 1677-0471.  http://dx.doi.org/10.15689/ap.2017.1701.01.13308.

The objective of this study was to search for validity and reliability evidence of the Free Will Inventory (FWI) for the Brazilian population, in addition to translating and adapting it into Portuguese. This instrument is divided into two parts. The first part seeks to investigate strength of beliefs in free will, determinism and dualism. The second part seeks to investigate relationships between these constructs and moral responsibility. A total of 316 participants between 18 and 77 years of age responded via an online platform to a socio-demographic questionnaire and the FWI. As in the original scale, the exploratory factor analysis revealed the existence of three factors: free will, determinism and dualism. Cronbach's alphas of the subscales were, respectively, 0.81; 0.75; 0.85. The FWI presented good psychometric properties for the Brazilian population, and use is recommended for future research in the field of social psychology.

Keywords : free will; dualism; determinism; scale; psychometry.

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