Dr. Jean Twenge, SDSU Psychology Professor, and her co-authors (Ryne Sherman and Sonja Lyubomirsky) research on happiness levels was published on the Associated Press [Click here to read article]. According to Dr. Twenge, “They found that the answer depends on life stage: Teens and young adults are now happier than they used to be, but adults over age 30 are less happy. We think high expectations, income inequality, and the decline in the marriage rate are possible causes. There’s more on this in the new edition of my book Generation Me and in my Psychology Today blog post about the study [ click here to read the blog]. ”