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Regression Discontinuity Design: Econometric Issues

A video of a more detailed discussion of the Regression Discontinuity Design, a type of quasi-experiment.

Videos from a lecture on experiments

Author of this page: Graham R. Gibbs

Affiliation: University of Huddersfield

Date written: 3rd January 2013

Ref: Gibbs, G R (2013) "Lecture on experiments", Online QDA Web Site,







A lecture in two parts on the design of experiments and quasi-experiments by Graham R Gibbs taken from a series on research methods and research design given to masters (graduate) students at the University of Huddersfield.


This video is public.The Experiment

Examines the nature of the true experiment and the key issue of random allocation to different experimental groups. Many experiments are carried out in a laboratory as this offers the experimenter a good deal of control but this can be seen as a false situation to examine behavior and there has been some interest, despite the difficulties and dangers, in undertaking experiments 'in the field'.


This video is public.The Quasi-experiment

Examines the idea of quasi-experiments that have the style and feel of true experiments but forsake proper random allocation of participants to groups. Following the work of Cook and Campbell, some designs are poor and allow too many threats to validity, but some designs, if carefully used allow us to gather useful data about the causes of effects in the dependent variable.