Final answer:
Lottery winners tend to be happier than normal for about 12 months following their win.
Step-by-step explanation:
The statement that lottery winners tend to be happier than normal for about 12 months following their win is True. This finding is supported by several studies, such as the research conducted by Brickman, Coats, and Janoff-Bulman in 1978. They found that lottery winners experienced a short-term increase in happiness, but their happiness levels eventually returned to baseline.