IMRaD differs from the usual argument based papers because its more of an experiment based paper. In an IMRaD paper you need the number of participants in your study, procedures, and results. With argumentative papers you usually just need sources to support you argument. The main points for an IMRaD paper is the intro, methods, results, and discussion. This differs a lot from a argumentitve paper because in in argumentative paper you just need headings and to support the argument you are trying to make. An IMRaD paper also is more of an explanation of your findings and explaining the results. The set up of the paper is also different between and IMRaD paper and an argumentative paper. For an IMRaD paper it is set up with separate paragraphs dependent on the intro methods results and discussion. Argumentative papers are set up with titles you come up with yourself and your explain your sources or argument relating to the title.