The theory of linguistic relativism suggests that language influences the way we think (Reinez & Prinz, 2009). The present study aims to extend the evidence into another domain, grammatical number. The methodology and idea stem from research by Phillips & Boroditsky (2003). My study investigated the differences in cognition between native speakers of a 2-way number system language (English) and native speakers of a 3-way number system language (Slovenian). The primary hypothesis was that Slovenians group pictures of two versus three by number, whereas the English group them by type. Dual and nondual dialects of Slovenian are also compared to exclude the possible cultural differences between the English and the Slovenian participants. The ex...