Abstract
In contemporary philosophy and psychology there is an ongoing debate about Theory of Mind , which mainly concerns our ability to understand other people. For almost two decades, authors have argued in favour of a crucial relationship between language and children's development of ToM. Studies based on verbal tasks suggest that children possess a ToM not earlier than about the age of four. Nevertheless, in recent years, this paradigm has been almost replaced by a 'new' nativist paradigm conceiving of mental capacities as part of our purely biological inheritance. In contrast with the traditional tasks, non-verbal task results indicate that children possess ToM at the age of 15 months, or earlier. The contradictory data led to the so-called 'developmental gap': how is it that 15-month-olds already possess ToM, while failing the traditional tasks until the age of four? My thesis is that the data at our disposal, if interpreted in the light of a suitable theoretical framework, do not generate a genuine contradiction. Prior to the interpretation of the research results, a distinction between epistemological and metaphysical levels of investigation, and a clear analysis of notions such as 'representation', 'inference', 'mental state', and the like, is required