You walk into your local grocery store and see two packages of ground beef that are identical aside from their labeling. One is labeled “80% lean,” and the other is labeled “20% fat.” Which package...

You walk into your local grocery store and see two packages of ground beef that are identical aside from their labeling. One is labeled “80% lean,” and the other is labeled “20% fat.” Which package are you more likely to buy, and what behavioral economic concept does this example illustrate?