The amount of wine you drink is influenced by the shape of the glass, and whether you are holding the glass when you pour it, a new study suggests.
Study participants were told to pour what they considered to be a normal amount of wine into a glass. When they used a wide glass, they poured about 12 percent more than when they poured into a narrow glass. They poured 12 percent more when they held the glass, compared to when they set it on a table, CBS News reports.
The study also found participants poured 9 percent more white wine into a glass than red wine.
Using narrower wine glasses and not pouring while holding the glass may help modestly reduce the amount of wine a social drinker pours and drinks, the researchers note.
“People have trouble assessing volumes,” co-author Laura Smarandescu of Iowa State said in a news release. “They tend to focus more on the vertical than the horizontal measures. That’s why people tend to drink less when they drink from a narrow glass, because they think they’re drinking more.”
The findings appear in the journal Substance Use and Misuse.
A study published last year found people tend to drink beer more slowly if it is served in a straight glass instead of a curved one.
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