Answer:
To assess whether the results are valid or not, the researcher must check that the dependent variable is not manipulated and also that the results do not reflect any subject or experimenter bias.
Explanation:
- For any study to be deemed as valid, the most important criterion is that the dependent variable that the study is based on should not be vulnerable to change with any change in other attributes related to the study.
- Moreover, if the study is found not to be impartial and carried out with an intention to produce a specific predetermined result, the study cannot be considered to be valid.
