Selected Sources Author's Note: A recent report from NIDS, published in August of has now reassessed this hypothesis and brought once again into question, the source of the large, flying triangles, with the following observation: As you read the following analysis, bear in mind the context in which it was written inon the heels of wide publicity for the NIDS DOD hypothesis. That said, each day that now passes only adds to the case that the January 5, UFO over Illinois was not a military aircraft.
Eisenhardt 's methodological work. Yin 's guidelines and making positivist case analysis example business report. There are substantial methodological differences between these approaches. Case selection and structure[ edit ] An average, or typical case, is often not the richest in information. In clarifying lines of history and causation it is more useful to select subjects that offer an interesting, unusual or particularly revealing set of circumstances.
A case selection that is based on representativeness will seldom be able to produce these kinds of insights. When selecting a case for a case study, researchers will therefore use information-oriented sampling, as opposed to random sampling.
Alternatively it may be chosen because of researchers' in-depth local knowledge; where researchers have this local knowledge they are in a position to "soak and poke" as Richard Fenno put it,  and thereby to offer reasoned lines of explanation based on this rich knowledge of setting and circumstances.
Three types of cases may thus be distinguished for selection: Key cases Outlier cases Local knowledge cases Whatever the frame of reference for the choice of the subject of the case study key, outlier, local knowledgethere is a distinction to be made between the subject and the object of the case study.
The subject is the "practical, historical unity" through which the theoretical focus of the study is being viewed. Thus, for example, if a researcher were interested in US resistance to communist expansion as a theoretical focus, then the Korean War might be taken to be the subject, the lens, the case study through which the theoretical focus, the object, could be viewed and explicated.
Gary Thomas thus proposes a typology for the case study wherein purposes are first identified evaluative or exploratorythen approaches are delineated theory-testing, theory-building or illustrativethen processes are decided upon, with a principal choice being between whether the study is to be single or multiple, and choices also about whether the study is to be retrospective, snapshot or diachronic, and whether it is nested, parallel or sequential.
The typology thus offers many permutations for case-study structure. These are, to a differentiable degree, similar to the case study in that many contain reviews of the relevant literature of the topic discussed in the thorough examination of an array of cases published to fit the criterion of the report being presented.
These case reports can be thought of as brief case studies with a principal discussion of the new, presented case at hand that presents a novel interest.
In a case where the market of any organisation is in a messy state, the agency will always seek to find out some of the reasons why the scenario is that way.
They will have to gather information that may help them in solving such issues. For this to be fully achieved, one must be able to carry out a market research to establish where the problem is.
This, therefore, calls for the different methods which can be used in a situation where one wants to conduct a marketing research. The organisations have to choose one of the available techniques so that they can thoroughly conduct their investigations.
Some of the primary methods that would be used included interviews, surveys, focus groups, observations and in some cases use field trials. Types of case studies[ edit ] In public-relations research, three types of case studies are used: Under the more generalized category of case study exist several subdivisions, each of which is custom selected for use depending upon the goals of the investigator.
These types of case study include the following: These are primarily descriptive studies. They typically utilize one or two instances of an event to show the existing situation. Illustrative case studies serve primarily to make the unfamiliar familiar and to give readers a common language about the topic in question.
Exploratory or pilot case studies. These are condensed case studies performed before implementing a large scale investigation. Their basic function is to help identify questions and select types of measurement prior to the main investigation.
The primary pitfall of this type of study is that initial findings may seem convincing enough to be released prematurely as conclusions.
These serve to aggregate information from several sites collected at different times. The idea behind these studies is that the collection of past studies will allow for greater generalization without additional cost or time being expended on new, possibly repetitive studies.
Critical instance case studies. These examine one or more sites either for the purpose of examining a situation of unique interest with little to no interest in generalization, or to call into question a highly generalized or universal assertion. This method is useful for answering cause and effect questions.
Case studies in business[ edit ] At Harvard Law School InChristopher Langdell departed from the traditional lecture-and-notes approach to teaching contract law and began using cases pled before courts as the basis for class discussions.
But organizational behavior cannot always be easily reduced to simple tests that prove something to be true or false. Reality may be an objective thing, but it is understood and interpreted by people who, in turn, act upon it, and so critical realismwhich addresses the connection between the natural and social worlds, is a useful basis for analyzing the environment of and events within an organization.
A critical case allows the following type of generalization: Falsification offers one of the most rigorous tests to which a scientific proposition can be subjected: Popper himself used the now famous example: The case study is well suited for identifying "black swans" because of its in-depth approach:CASE STUDY REPORT FORMAT GUIDELINE relevant information from the case analysis.
Body • Key Issues/Goals/Problems • Decision Criteria It is recommended that you source business journals, periodicals, and textual references as well as any online research. Make sure you support your ideas.
Decision making under risk is presented in the context of decision analysis using different decision criteria for public and private decisions based on decision criteria, type, and quality of available information together with risk assessment.
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