The threat to external validity posed by multiple-treatment interference can be reduced through experimental designs in which:
A)experimental groups experience the independent variables in every possible sequence or combination.
B)only one independent variable is used.
C)a double-blind situation is used to reduce experimenter expectations.
D)reactivity is decreased through replication.

Question

Quizplus · Accepted Answer

By having experimental groups experience the independent variables in every possible sequence or combination, the effects of multiple-treatment interference can be minimized, ensuring that the influence of the order or combination of treatments is accounted for in the experimental design.

The Threat to External Validity Posed by Multiple-Treatment Interference Can