Essin' Em over at Sexuality Happens brought my attention to a study being done of couples who intend to get married within the next year. The researcher writes:
I am looking for volunteers for a study of attitudes towards marriage and parenthood among engaged couples. The study consists of a 25-30 minute online survey. To qualify for the study, you must be 20-35 years old, live in the U.S., and plan to marry or have a commitment ceremony within the next 365 days. You and your romantic partner must not have children, and this must be the first marriage for both of you.The sex/gender of the individuals in the couple do not matter; no mention is made in the call for participants about poly relationships, but if you're in one and otherwise fit the bill I'd encourage you to contact the researcher and offer yourselves as part of the sample. The more diverse the sample population, the more interesting the end result will be.
You can read a bit more about the study (and get contact details) over at Sexuality Happens.