Participants
SD
Participants were 231 cohabiting couples recruited from two metropolitan areas of Denmark. The sample's age ranged from 24 to 66 years, with a mean age of 37.4 years (standard deviation [SD] = 6.4) for women and 39.1 years (SD = 6.5) for men. The majority (95.5%) were born in Denmark and had an education of bachelor's degree or above (88% of the women, 84% of the men). More than half of the couples (67.6%) had a total income at or above the Danish average (of year 2013), while 9.3% of the couples had an income half that of the average Danish couple or less (Danish Statistics, 