For all their admonitions about responsible drinking, it turns out that older adults aren’t as good as young ones about knowing when to stop. After drinking the same amount of alcohol as their younger counterparts, older adults are not only more impaired than younger ones, but less likely to believe they are. In a new study published in this month’s issue of the Journal of Studies on Alcohol and Drugs, researchers recruited 42 adults: half were between the ages of 50 and 74, and half were aged 25 to 35.