At the same time, relationship quality testing uses cousin income worth as opposed to natural income worthy of (Lu and you may Ruan, 2017). Angrist and you will Evans (1998) suggest that due to the fact specific women can be outside of the labor field, it is sometimes complicated so you’re able to depend simply towards the women’s wages to possess review. Hence, this new personal revenues out of interviewees was basically analyzed determine income outcomes. Answers into the matter “what is the quantity of your own money around working” was collected and you will rated with four rankings in the reduced so you’re able to the best. Subsequently, contrasting were made anywhere between interviewees’ income statuses and the ones of its partners. Finally, three levels of new categorical varying were used: couple income equivalent, spouse earnings advantage, and you can partner earnings virtue.