Curvy Glasses Mean Faster Drinking?

The Scientist:

Different glass shapes can give the same volume of liquid the appearance of varying volumes, reasoned experimental psychologist Angela Attwood of the University of Bristol. So she and her colleagues set out to test how much glass shape affected beer drinkers’ intake. They tested 160 healthy young people, who were categorized as “social beer drinks,” not alcoholics, according to the standard WHO test for hazardous drinking. The researchers then asked each participant to drink one of two volumes of lager or soft drink—either 177 milliliters or 354 milliliters—from either a straight or curved glasses, while watching a nature documentary. At the end of each session, the participants performed a word search task, the purpose of which was merely to throw them off the true purpose of the study.
Reviewing the data, the researchers found that people drinking a full glass of beer from a curved glass drank significantly faster—in about 8 minutes, compared to the average 13 minutes it took people drinking from a straight glass. They found no differences in drinking time, however, between curved and straight glasses of half a beer.
According to Attwood, social beer drinkers naturally pace their drinking by judging how quickly they reach the halfway point. Because a curved glass holds more beer in the top half, it unconsciously motivates drinkers to speed up, reasons Attwood, who suggests a solution of marking beer glasses with a half-full line.

I guess I could tell that it took a while longer to drink the top part of the curved 22 oz beers, and that once you got to the bottom half it would go a lot quicker.   It didn't take a long time to figure that one out.  It is really noticeable if you buy a glass when you have to leave soon, then try to finish it quickly.  The top part takes a lot out of you.