The study looked at 42 couples who had been married at least 12 years, during two clinical visits conducted two months apart. At the beginning of each visit, the researchers used a suction device to inflict blisters on the arms of each participant.
During the first visit, the spouses were led in positive discussions. For the second visit, however, the couples were encouraged to talk about things on which they disagreed. The sessions were videotaped to determine the degree of hostility between each couple, and the wounds were monitored for blood flow and fluid accumulation. The hostile couples' wounds healed at only 60% of the rate of non-hostile couples.
The study revealed that a 30-minute marital disagreement can add a day or more to the healing process of a wound.
Source: Robert Roy Britt, LiveScience.com (5 December 2005)
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