This document discusses research paradigms in online and distance education research. It begins by defining key terms like research paradigm, ontology, epistemology and methodology. It then outlines four main research paradigms: positivism, interpretivism, critical theory, and pragmatism. For each paradigm, it describes the underlying beliefs about the nature of knowledge and reality, as well as typical research questions and methodologies. Examples of studies using different paradigms are also provided. The document concludes by discussing considerations for choosing a research paradigm and what makes a good research question.