Back to TTM ResultsDuring the course of the study, we asked couples to visit our research lab at SFU twice for a series of interviews and discussions. Approximately 85% of the 200 couples in the study visited our lab during the first lab session (three months after the wedding) and 79% of the couples visited during the second lab session (about two years after the wedding). Most of the couples who did not participate in the lab sessions were no longer participating in the study, but some opted not to visit the research lab due to time constraints or various other reasons.