I want to know the answer to the following question:
How many dimensions did Melzack and Casey describe pain in terms of?
All the background I'm provided with is that "The paper ends with a call to action: "Pain can be treated not only by trying to cut down the sensory input by anesthetic block, surgical intervention and the like, but also by influencing the motivational-affective and cognitive factors as well."". Is that enough to answer the question?