Read Original Source 4 on the companion website, Duke Health Briefs: Positive Outlook Linked to Longer Life

Question:

Read Original Source 4 on the companion website, “Duke Health Briefs: Positive Outlook Linked to Longer Life in Heart Patients.” Explain how the researchers measured “happiness.”
Fantastic news! We've Found the answer you've been seeking!

Step by Step Answer:

Related Book For  book-img-for-question
Question Posted: