Working moms feel more stress than working dads.

This fascinating study showed that effects of short-term memory stress like answering the phone while caring for a child was much different and much less damaging than overloading the memory with long-term multi-tasking.

The working parents in the study wore watches that beeped randomly seven times throughout the day. Researchers wanted to know how much they were multitasking. So, after the beep, the men and women filled out forms that described what they were doing, what “else” they were doing, and whether they were happy, stressed or wished they were doing something else.

After gathering all the information, the researchers found that working mothers spent 10.5 more hours every week on multitasking compared with working fathers — typical chores like preparing dinner, doing laundry, maybe even doing some work brought home from the office, while also talking with their child and helping with homework.

Fathers, on the other hand, did a different kind of juggling. “When they’re multitasking, it tends to be more work related — so they might be answering a work call” while spending time with the kids, Schneider says.

As a result, Schneider says, the women reported much greater feelings of stress and being overwhelmed than the men reported. The men reported feeling pleased with their multitasking.