Write a 1,300- to 1,800-word paper addressing the following:

• Describe the major differences between acute pain and chronic pain, and how they would be treated differently.

• Explain the gate-control theory of pain and how this helps us understand chronic pain. 

• Describe how you would measure pain.

• Describe the differences between nociception, pain, pain behavior, and suffering. Find and illustrate examples of how people can have nociception without pain, pain without pain behavior, and pain without suffering.

• Explain how psychological states such as anxiety and depression influence the development of chronic pain.

• What has been reported in the literature about sociocultural differences in pain perception?

Format your paper consistent with APA guidelines, including at least five peer-reviewed articles.