Ummu Ubaidah Muhamad Fauzi It may be more difficult to carry out. It may take more experience to gather and analyze data, as well as understand the results, than using just one approach. Combining approaches necessitates more resources, such as time and money.

It is possible to look at things from more than one worldview. One can attempt to understand one phenomenon from different points of view.

Yes definitely. However first decide why you want to do so, and if its applicable to your study objectives.

As an advocate for pragmatism, I would say no. The reason is that pragmatism rejects most of the fundamental assumptions of both constructivism and post-positivism with regard to ontology and epistemology. Given that assumptions about ontology and epistemology are the defining features of both constructivism and post-positivism, you can't have it both ways.

You could, however, consider dialectical pluralism, which seems to accept pretty much everything.