This paper analyzes the variation of Q-interrogatives in Portuguese in order to verify the effect of the use of some variables with and without cleavage in these constructions. The analysis includes real time research panel and trend analysis to investigate if the process variable is changing in the language. The results indicate that there is change at the individual level, but not in the community, provided there is progress in the formal education of the subjects. The study also aims to demonstrate how theoretical and methodological tools are applied to the field of Sociolinguistic research.