Self-identity and shared traits in marriageMarried research participants were asked to complete a questionnaire that assessed whether they possessed each of 90 personality traits and whether their spouses possessed each of those same traits. Next, to test their gut-level certainty about these assessments, the participants performed a computerized task in which they indicated, as rapidly as possible, whether they possessed each of the 90 traits. The computer measured response times in milliseconds.How did they fare at the computerized task? The participants were significantly faster at determining whether a given trait applied to them if it applied to both them and their spouses — or neither them nor their spouses — than if it applied to one of them but not the other.In other words, it is easier for you to assess whether you yourself are funny if you and your spouse are both funny or both not funny. If you and your spouse are dissimilar when it comes to humor, you experience some amount of identity confusion: You have less intuitive certainty about whether you are funny.