Chapter Questions
Briefly describe the difference between attitude rating scales and ranking scales and indicate when the two are used.
Why is it important to establish the "goodness" of measures and how is this done?
Construct a semantic differential scale to assess the properties of a particular brand of coffee or tea.
Whenever possible, it is advisable to use instruments that have already been developed and repeatedly used in published studies, rather than develop our own instruments for our studies. Do you agree? Discuss the reasons for your answer.
"A valid instrument is always reliable, but a reliable instrument may not always be valid." Comment on this statement.