Practice question · Select all that apply
Select every statement that is TRUE about true experiments.
Hints
- Two options are false - one swaps IV and DV, one drops the random-assignment requirement.
- The IV is manipulated (not measured), and manipulation without random assignment is a quasi-experiment.
Show the answer
- B. Random assignment is what allows an experiment to rule out confounds on average.
- D. Operational definitions make a study replicable by specifying how concepts are measured.
- E. Double-blind guards against experimenter bias and participant expectations.
Why
Random assignment ruling out confounds, the double-blind guarding both sides, and operational definitions enabling replication are all true. The IV is manipulated (not measured), and manipulation without random assignment is only quasi-experimental - those two are false.
Practise Experimental Design
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