The Perceptual Awareness Scale (PAS, Ramsoy & Overgaard, 2004) was created to measure the different degrees of clarity that may be present in subliminal perception. Since then, the PAS has been widely used in consciousness literature. Given that the PAS was presented as a methodological approach (Overgaard & Sandberg, 2021), the original 4-point item and its labels have been modified to accommodate different necessities of the research carried out. However, most modifications lack proper justification or validity evidence to support their use. For instance, Soto et al. (2011) used a PAS version to study whether the working memory could operate with unconscious representations. During the replication of Soto et al.’s study, Franco-Martínez et al. (2024) observed substantial changes in pilot participants' performance when varying the PAS labels and instructions. Our research question is whether modifying the PAS affects the results and inferences in an unconscious processing research. Furthermore, a study comparing the different scales is also needed to assist in the debate about the dichotomous and gradual nature of visual awareness. In this study we will study the validity of different PAS versions observed in the literature –ranging from a dichotomous scale, to a 5-points scale and varying their categories labels. We will perform an experimental design in which each participant will be randomly assigned to one PAS version. Specifically, we intend to test whether the use of one or another PAS would affect the probability of inferring whether the working memory is unconscious or not.