way by genetics. In a 2016 study, Michael Minkov and Michael Harris Bond found that a gene by the name of SLC6A4 was not a good predictor of happiness level in humans.

On the other hand, there have been many studies that have found genetics to be a key part in predicting and understanding happiness in humans. In a review article discussing many studies on genetics and happiness, they discussed the common findings. The author found an important factor that has affected scientist findings this being how happiness is measured. For example,