资讯

lse3 年
Causal Inference for Observational and Experimental Studies
as well as nonignorable treatment assignment in observational studies. To analyse these research designs, the methods covered include experiments, matching, instrumental variables, ...
lse4 年
Causal Inference for Observational and Experimental Studies
as well as nonignorable treatment assignment in observational studies. To analyse these research designs, the methods covered include experiments, matching, instrumental variables, ...
University of Bristol3 年
An introduction to observational and experimental design
On watching this video, students should be able to: Distinguish between an observational and experimental study. Explain the main reason why a randomised experiment can if done well, be used as a test ...
University of Bristol3 年
Introduction to observational studies
Explain why an observational study can generally only be used to describe associations rather than causation, and put them into the context of the hierarchy of evidence. Discuss why not all research ...
International Monetary Fund9 年
How experimental economics emerged from the shadows
When the California energy market was deregulated, for example, the problems were caused not so ... attracted me to experiments—the dissatisfaction with the observational state of economics." What is ...
Phys.org25 天
The first experimental observation of Dirac exceptional points
This research group's successful observation of Dirac EPs, which are brought by Hermitian-like symmetry into non-Hermitian systems, could soon inspire new experimental work in the field.