The syntactic analysis of preverbal subjects has been the topic of debate for a wide variety of languages. This book establishes clausal word order preferences for Galician, a null-subject language of the Iberian Peninsula, based on quantitative and qualitative data. The experimental methodology and information structure assumptions employed create several testable predictions. The results suggest that, in a wide range of contexts, preverbal subjects behave like canonical elements, and not clitic left-dislocated (CLLD) elements.