A cohort of Baby Boomer women were compared to a cohort of Preboomer women using a sequential research design that took measurements in 1983, 1986, 1993, and 2003. What was a finding of that study?
◦ The relationship between age and reported frequency of marital conflict was the same across cohorts.
◦ The different cohorts' self-perceptions of femininity declined in parallel fashion.
◦ Because this was a sequential study, no reliable findings could be reported.
◦ The relationship between age and reported frequency of marital conflict was different in each cohort.