As mentioned earlier, intensive needs assessment requires the ranking of priorities. While there are many methods to rank needs, it is important to develop ranking criteria. Feasibility is often used as criteria, but it is often useful for a group to identify their own set of criteria. This part of the research is not so much concerned with developing a detailed plan for solving the needs situation, but rather for examining the depth of the need and potentially required resources. Force field analysis, developed by Kurt Lewin, is one method for facilitating determining needs feasibility. An example taken from Stoecker1 states that if, "for example, feasibility is defined as degree of staff expertise and time, or funds to buy expertise and time, the force field analysis can look for data indicating available staff expertise and time and/or available external funds and expertise". The illustration below displays a model force field analysis.