All Questions
4 questions
2
votes
0
answers
401
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2SLS approach using lagged dependent variable as an instrument
I was wondering if the lagged dependent variable can be a valid instrument or not.
In my data, policy intervention (x) is made depending on the outcome (y) in the past. (not depending on the effect (b)...
- 61
1
vote
0
answers
132
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Propensity score matching at the group level and models at the subject level
I am running a study that uses a combination of propensity score matching and mixed-effects models. I use propensity score matching to locate some groups (half of them represent control, and another ...
- 87
3
votes
1
answer
174
views
Teaching examples for internal validity: published experiments later shown to be confounded in an interesting way
There are some good examples of interesting/fun spurious correlations here (Examples for teaching: Correlation does not mean causation). Many/most of these are "funny" examples that aren't likely to ...
- 223
1
vote
0
answers
453
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How to test relative validity statistically?
I am trying to understand a) what relative validity is, and b) how to test it statistically. So far I have gathered, from sources such as this that relative validity is a larger reliability in ...
- 3,063