Effect of the destructive disagreement belief on satisfaction with one's closest friend

The purpose of this study was to test the hypothesis that, when imagining a serious disagreement with one's closest friend, verbalizing the irrational belief that disagreement is destructive would lead to greater relationship dissatisfaction than would verbalizing the rational belief that disagreement is not destructive. The author used two counter-demand-control conditions to test a second hypothesis that this effect would not be the result of demand characteristics. Undergraduates (119 women and 43 men) were randomly assigned to 1 of 5 conditions in a pretest-posttest design. In comparison with a control condition, posttest relationship dissatisfaction was significantly higher in the irrational condition and was lower, but not significantly so, in the rational condition. These results were not attributable to demand characteristics and suggested that this irrational belief increased relationship dissatisfaction.