Priscilla Wants to Design a Study That Will Let Her

Priscilla wants to design a study that will let her determine what lifestyle factors are more likely to contribute to greater levels of happiness. The only problem is that she can't look inside people's heads to see their degree of happiness. What should be her first step?

A) create an operational definition that translates the abstract concept of happiness into something observable and measurable
B) find an assessment instrument that has already been used extensively by other researchers
C) find someone who has already studied happiness to work with
D) choose another topic
E) None of these response options is relevant.