Some survey research produces answers indicating that couples who share domestic responsibilities have more sex. But other asking investigations conclude exactly the opposite.
Survey research often generates inconsistent answers; not only about sex, but also about the nation’s economy, job rate growth, illicit drug use, and many other matters. If you want to find out what’s really going on, don’t ask. That’s the theme of my book, The Problem with Survey Research, available at: http://www.amazon.com/Problem-Survey-Research-George-Beam/dp/141284603X/ref=sr_1_1?s=books&ie=UTF8&qid=1371762201&sr=1-1&keywords=the+problem+with+survey+research