Contents
What is a negative case?
A “negative case” is one in which respondents’ experiences or viewpoints differ from the main body of evidence. When a negative case can be explained, the general explanation for the “typical” case is strengthened.
What does deviant case mean?
Deviant Case. (subcategory of crucial case) Definition: case that is disconfirming a particular theory/concept (least-likely case shown to be positive, most likely case shown to be negative) Unlike extreme case, which is confirming a theory.
What is negative case analysis example?
Examples of negative case analysis are shared such as communication challenges chaplains face in providing spiritual care for patients.
What is deviant case analysis in qualitative research?
Deviant case analysis is a process for refining an analysis until it can explain or account for a majority of cases. Analysis of deviant cases may revise, broaden and confirm the patterns emerging from data analysis.
How do you know if a case is negative?
To identify negative test cases, start with the positive. Each positive test case is created by analyzing the business/user requirements, artifacts, and software design documents. Use each positive test case scenario to identify the negative test case by utilizing information not found in the documents.
Why are deviant cases important?
Using deviant or negative cases allows for the possibility of identifying concepts that are present but have no effect on what is being studied as well as pointing to ways in which concepts can be introduced or rearranged to clarify or extend existing theories.
Are deviant cases exceptional?
An extreme case (or deviant case) can be thought of as an outlier —an observation that takes on an extremely high or extremely low value. The general idea is that if you study extremes of the population, it could garner some valuable insights that can be generalized to the population as a whole.
How many types of case studies are there?
Types of Subjects of Case Study. In general, there are four types of case studies and 5 types of subjects they address. Every case study whether exploratory, critical, or cumulative, fits into the following subject categories.
Why is the search for negative cases important?
Negative case analysis helps you recognize alternative viewpoints, the source of the contradicting data, and how they can contribute to your research to make it more robust. Furthermore, analyzing negative cases gives you a better understanding of the strengths and limits of your data.
What are the types of case study?
Types
- Collective case studies: These involve studying a group of individuals.
- Descriptive case studies: These involve starting with a descriptive theory.
- Explanatory case studies: These are often used to do causal investigations.
What percentage of test cases should be negative?
If there are 5 inputs and each input has six possible values (3 positive i.e. valid and 3 negative i.e. invalid) then using simple combinatorial math, we can see that there be (minimally) 3*5=15 negative test cases and (minimally) 5 positive test cases. In this case the 15/(15+5)= (75%) of test cases are negative.