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Luís Faísca, Sofia Afonseca, Martin Brüne, Gabriela Gonçalves, Alexandra Gomes, Ana Teresa Martins

• \(\textit Background:\) Developmental concepts of "Theory of Mind" (ToM) suggest that this cognitive domain is an innate human capacity requiring input from the social environment to mature. Research suggests substantial individual differences in ToM, depending on childhood experiences, genetics, and the presence or absence of a neuropsychiatric disorder. None of the existing ToM tests for adult populations have been made available in Portuguese. Accordingly, the main objective of this study was to evaluate the psychometric properties of the Portuguese versions of the Faux Pas (FP) Recognition Test and the ToM Picture Stories Task. \(\textit {Sampling and Methods:}\)Both tests were given to a sample of 200 Portuguese adults (125 women and 75 men) aged between 18 and 60 years. \(\textit {Results and Conclusions:}\) The psychometric analyses of the results indicate that the Portuguese version of the FP Recognition Test is appropriate for use in research and clinical settings, providing a composite score that reliably measures the ability to infer the thoughts and feelings of others in a "faux pas" situation (Cronbach’s α = 0.82). However, the ToM Picture Stories Task did not show acceptable psychometric qualities.