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

question 45

Multiple Choice

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.