Practice: Think of three operational definitions for sexual jealousy, decisiveness, and social anxiety. Consider the possibility of self-report, behavioral, and physiological measures. Be as precise as you can.
Practice: For each of the following variables, decide which level of measurement is being used.
A college instructor measures the time it takes his students to finish an exam by looking through the stack of exams at the end. He assigns the one on the bottom a score of 1, the one on top of that a 2, and so on.
A researcher accesses her participants' medical records and counts the number of times they have seen a doctor in the past year.
Participants in a research study are asked whether they are right-handed or left-handed.