You conduct a correlational study on the relationship between physical activity levels and carbohydrate intake. You collect all of your data on a single measurement occasion using a questionnaire measuring physical activity levels and carbohydrate intake. What types of validity can you use to evaluate whether your study is any good?
A) Construct validity and logical validity
B) Internal validity and external validity
C) All of the above
D) None of the above

Question

Quizplus · Accepted Answer

Construct validity is relevant because it assesses whether the questionnaire accurately measures the theoretical constructs of physical activity levels and carbohydrate intake. Logical validity, while not a standard term in research methodology, could be interpreted as part of construct validity, involving the logical or theoretical justification for interpreting the questionnaire as an accurate measure of the constructs. Internal and external validity are more relevant to experimental designs and causality, not directly applicable to the measurement quality in a correlational study.

You Conduct a Correlational Study on the Relationship Between Physical