Americans are, on average, only 69 percent happy. The world population is, on average, less than 65 percent happy. At any given time, one forth of Americans are 2nd grade science mass
depressed 14 percent of the nations on Earth are less than 50 percent happy. Happiness Increase Experiments published in peer review journal have empirically demonstrated that individuals can be trained to be 25 percent happier through various training programs in from two to ten weeks. All demographic variables combined, including age, sex, income, race, and education, are responsible grammaar only 15 percent of the difference mcdougal littell grammar for writing workbook answers grade 11 happiness levels between individuals. American Children feel happy 52 percent of the time, neutral 29 percent of the time, and unhappy 19 percent of the time.