SANTA FE, NM - JULY 4, 2018: A father walks hand-in-hand with his daughter as they enjoy a Fourth of July holiday event in Santa Fe, New Mexico. (Photo by Robert Alexander/Getty Images) Researchers who gauged "parental burnout" in dozens of countries around the world found American moms and dads were among those feeling most exhausted.The study also found one specific cultural factor common in "Western" countries that played the largest role when determining the level of burnout.