It is internak to have internal validity in a study and not have construct validity. Thus, internal validity is only relevant in studies that try to establish a causal relationship. However, few case studies internal validity case study research truly experimental, in the sense of having a manipulated treatment. Imagine that the tutoring is unique in that it has a heavy computer game component and you think that’s what gesearch really work to improve math performance.
That is, you can think of internal validity as a “zero generalizability” concern.
What caused the improvement was the individual attention that the adult tutor gave to the child — the computer program didn’t make any difference. It is not sufficient simply to examine the covariation of X internal validity case study research and Y, because there are too many confounding causal factors and because the latter cannot usually be eliminated by the purity of the research design or by clever quantitative techniques control variables, instrumental variables, matching estimators, and the like.
This study would have internal validity because something that you did affected something that you observed — dtudy did cause something to happen.
Internal Validity (Chapter 6) – Case Study Research
Then we’ll consider the different threats to internal validity — the kinds of criticisms your critics will raise when you try to conclude that your program caused the outcome. What this means is that case internal validity case study research research caxe relies heavily on contextual evidence and deductive logic to reconstruct causality within a single case.
Email your librarian or administrator internal validity case study research recommend adding this book to your organisation’s collection. Close this message to accept cookies or find out how to manage your cookie settings.
How does one construct a research design that might illuminate the causal relationship of interest? But the study would not have construct validity, specifically, the label “computer math program” does not accurately describe the actual cause perhaps better described as “personal adult attention”.
Internal Validity: Process Tracing (Chapter 7) – Case Study Research
But there may be lots of reasons, other than your program, why test scores may improve or symptoms may reduce. The key internal validity case study research in internal validity is whether observed changes can be attributed to your program or intervention i. One of the things that’s most difficult to grasp about internal validity is that it is only galidity to the specific study in question.
This is because a manipulable treatment is usually easy to replicate across multiple cases, thus providing a large-N cross-case research design. It doesn’t tell you whether what you did for the program was what you wanted to do or whether what you observed was what you wanted to observe — those are construct validity concerns.
But for studies that assess the effects of social programs or interventions, internal validity is perhaps the primary consideration. The second consists researvh internal validity case study research multiple group threats — criticisms that are likely to be raised when you have several internal validity case study research in your study e.
Researcj are no time machines. The fundamental problem of causal inference is that one cannot rerun history to see what effects X 1 actually had on Y in a particular case. Let us suppose that one has chosen one’s case or cases according to one of the techniques or some combination of techniques described in validiy previous chapter.
Email your librarian or administrator to recommend adding this book to your organisation’s collection. Since the key issue in internal validity is the causal one, we’ll begin by considering what conditions need to be met in order to establish a causal relationship in your project. In those contexts, you would like to be internal validity case study research to conclude that your program or treatment made a difference — it internal validity case study research test scores or reduced symptomology.
This chapter thus calls into question some of the usual assumptions applied to case study research. Most case study researchers perceive only a distant and tenuous connection between their work and the laboratory experiment, with a manipulated treatment and randomized control.
However, there are various ways of reducing uncertainty so that causal inference is possible, and indeed quite plausible. All that internal validity means is that you interjal evidence that what you did in the study internal validity case study research.