60秒科学:卡路里可以目测吗?
Subjects varied 1 their estimates of the calorie content of a food depending on the assumed negative or positive healthful qualities of the food item they had previously 2 been shown--with weird 3 consequences. Cynthia Graber reports
Dieters may try to estimate a meal’s calorie count. Now a study by Northwestern University’s Alexander Chernev finds that even the order in which food is presented—and whether the food is thought of as a vice 4 or a virtue—affects how many calories we think it has. The work will be published in 2011 in the Journal of Consumer Research.
Study subjects were shown a cheese-steak first, which they guessed had on average 578 calories. Or they saw a virtuous 5 fruit salad first, which they guessed was 311 calories. After which they estimated the same cheese-steak as having 787 calories.
But when first shown the vice of a slice of chocolate cake, which they guessed had 416 calories, subjects estimated that the same cheese-steak wasn’t much worse of a vice, at only 489 calories. So estimates of the cheese-steak calorie content went up when it followed fruit salad, but went down when subjects first considered a slice of cake.
An absurd outcome of this was that subjects estimated a cheesesteak and cake combo as having fewer calories than a fruit salad-cheesesteak one. So remember, when you’re counting calories, you really can’t rely on gut 6 feelings.
- The forms of art are many and varied.艺术的形式是多种多样的。
- The hotel has a varied programme of nightly entertainment.宾馆有各种晚间娱乐活动。
- The bicycle tyre blew out at a previously damaged point.自行车胎在以前损坏过的地方又爆开了。
- Let me digress for a moment and explain what had happened previously.让我岔开一会儿，解释原先发生了什么。
- From his weird behaviour,he seems a bit of an oddity.从他不寻常的行为看来，他好像有点怪。
- His weird clothes really gas me.他的怪衣裳简直笑死人。
- He guarded himself against vice.他避免染上坏习惯。
- They are sunk in the depth of vice.他们堕入了罪恶的深渊。