This has turned into an interesting thread.
The OP, in the first paragraph, reads:
"Listening to Radio 4, I cannot remember the programme, but they discussed the saying that men think about 'you know what' every 6 seconds. To test this, a survey was conducted at a university where girls and boys were given a clicker and told to click it every time they had ANY need or urge - food, drink, sleep and so on."
This sets the parameters of what was tested. It's about "you know what".
The third paragraph expands on that and wonders if it were expanded to other topics. Yet few really want to address that first result - do you think it's accurate? Do you think it's true? Then we start to attack the idea of a stereotype, where stereotypes are generalization based on evidence. They may or may not be correct, but I'm not convinced they are.
Given the era I grew up in, the stereotype holds pretty well. My wife stopped working the day we were a couple. She didn't like it, didn't enjoy it, and I could support her. She had the task of making sure I had a home to come home to. Is this really different from y'all?