Disconfirmation of person expectations by older and younger adults: implications for social vigilance.

The research examined whether age-related cognitive declines affect performance when people form impressions of others. The results from Experiment 1 showed that young and old participants who held positive expectancies about an individual spent more time processing and had better memory for information that was inconsistent rather than consistent with their expectancies. But participants who held negative expectancies tended to focus on information that was consistent rather than inconsistent with their expectancies. In Experiment 2 the task was made more demanding by limiting the amount of time participants had to form their impressions. Under these conditions, older participants who had positive expectations showed deficits in memory for negative information compared with young participants. As expected, both groups performed similarly when they held negative expectancies for the target. The results suggest that although both older and younger adults process social information similarly under self-paced conditions, older adults may be at a disadvantage processing negative information about positively characterized individuals when the context in which impression formation occurs is cognitively demanding.