<p>Sensation Seeking refers to an individual’s tendency to seek novel and intense experiences in varied areas of life. The Arnett Inventory of Sensation Seeking (AISS; Arnett, 1994) was developed to overcome several of the issues presented by the well-known Sensation Seeking Scale (SSS; Zuckerman, 1979). The main objective of the present study refers to the linguistic and cultural adaptation of the Arnett Inventory of Sensation Seeking (AISS) to Portugal, to test its psychometric characteristics, as well its resistance to Social Desirability bias. The main results obtained through Exploratory Factor Analysis (EFA) comprises a single-dimension structure, explaining 18.86% of the variance and with an acceptable reliability (α = .73). This is the first study using EFA to analyse AISS´ structure and studying the possible effect of social desirability in its assessment.</p>