Studies of identical and fraternal twins indicate that about ________ percent of the difference among people's happiness ratings is heritable.

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Quizplus · Accepted Answer

Studies have shown that about 40% of the difference among people's happiness ratings is heritable, meaning that it can be attributed to genetic factors. While environmental factors such as life circumstances and individual choices still play a significant role in determining happiness, genetics also plays a significant role. This finding reinforces the idea that there is no single "recipe" for happiness and that it is a complex interaction of various factors.

Studies of Identical and Fraternal Twins Indicate That About ________