What is the main purpose of the research?

W: Excuse me. Could I ask you some questions?
M: Of course.
W: I work for an advertising agency and I’m doing some research. It’s for a new magazine for people like you.
M: People like me? What do you mean?
W: People between 25 and 35 years old.
M: Ok.
W: Right. Urn, what do you do at the weekend?
M: Well, on Fridays, my wife always goes to her exercise class. Then, she visits friends.
W: Don’t you go out?
M: Not on Fridays. I never go out on Fridays. I stay at home and watch television.
W: And on Saturdays?
M: On Saturdays my wife and I always go sailing together.
W: Really?
M: Mm, we love it. We never miss it. And then, in the evening, we go out.
W: Where to?
M: Different places. We sometimes go and see friends. We sometimes go to the cinema or restaurants. But we always go out on Saturday evenings.
W: I see. And now Sunday. What happens on Sundays?
M: Nothing special. We often go for a walk. And I always cook a big Sunday lunch.
W: Oh. How often do you do the cooking?
M: Urn, twice a week.., three times a week...
W: Thank you very much. All I need now are your personal details, your name, job and so on. What’s your surname?
M: Robinson.