A national study found that college students think 25 years old is the “right age” to get married, while a majority of parents feel 25 is still a little too soon. So it’s no coincidence that when Justin Bieber said he’d like to wed by 25, Oprah Winfrey urged him to wait longer.“The assumption has been that the younger generation wants to delay marriage and parents are hassling them about when they would get married,” said Brian Willoughby, a professor at Brigham Young University and lead author of the study. “We actually found the opposite, that the parental generation is showing the ‘slow down’ mindset more than the young adults.”Willoughby and his co-authors in BYU’s School of Family Life gathered info from 536 college students and their parents from five college campuses around the country (BYU was not in the sample). As they report in The Journal of Social and Personal Relationships,the scholars found the hesitation is consistent across gender.“Initially we thought that this might be dads wanting their daughters to delay marriage,” Willoughby said. “Moms and dads trended together – gender wasn’t a factor.”One of the driving forces behind parents’ restraint is the feeling that their children should get an education first. While they generally feel marriage is important, parents think the “right age” is one year older than what their children say. Excluding teen marriages, research doesn’t support the notion that there is an optimal time to tie the knot.