CHAPTER 2 4. Discuss the four functions of concepts in social science research. 5. Process models or flowcharts are often developed to describe and guide a process. One may use a process model to describe ways to build a model. Use a schematic to illustrate what you consider a good way to build a model. Show all linkages and their direction. You should have described either a systematic step-by-step process or a dynamic process in which the steps are repeated and the model is revised several times. Defend the process you described. Link the purposes of a literature review with the stage3s of model building. At what stage(s) of the model would you conduct a review, and what would be the purpose of the review at each stage?