Failure to follow the treatment protocol means that
A)the OLS estimator cannot be computed.
B)instrumental variables estimation of the treatment effect should be used where the initial random assignment is the instrument for the treatment actually received.
C)you should use the TSLS estimator and regress the outcome variable Y on the initial random assignment in the first stage to get predicted values of the outcome variable.
D)the Hawthorne effect plays a crucial role.

Question

Quizplus · Accepted Answer

Instrumental variables estimation is appropriate when there is failure to follow the treatment protocol, using the initial random assignment as the instrument for the treatment actually received. This method helps to address issues of non-compliance in experimental studies.

Failure to Follow the Treatment Protocol Means That