Christian Science Monitor: Overall, people around the world have grown happier during the past 25 years, according to the most recent World Values Survey (WVS), a periodic assessment of happiness in 97 nations. On average, people describing themselves as “very happy” have increased by nearly 7 percent. The findings seem to contradict the view, held by some, that national happiness levels are more or less fixed. The report’s authors attribute rising world happiness to improved economies, greater …