Assuring Valid Results
- Below is a partial list of the steps a researcher can take to assure that the study has both internal and external validity
- When research is Standardized, the subjects in all groups get the same treatment under the same conditions. Without standardization, results CAN NOT be compared.
- The Random selection of subjects help control for any bias related to the subjects
- A blind study means that the subjects are not given any information regarding the study, the variables, or anticipated outcome. They are blind to the anticipated results.
- A double-blind study means that the experimenters are also unaware or blind to the anticipated outcome of the study.
- Research should always be replicated to help assure that the result of one study wasn’t merely a statistical fluke. It is usually best to replicate a study using the same procedures, different subjects, and different experimenters.