[Solved] Might Use Research Scale

  What is the primary purpose of the study, How were the variables measured, How big was the sample, What were the eligibility requirements of the study, What are the main findings of the article, Did the article provide suggestions for future research? If so, what were they?

a. Hint: We use a ruler to measure the construct (variable) of length. We might use research scale to measure depression. What devise (or instrument) was used to measure the variables?